Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!





Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Did you get a great deal? Let us know in the Values & Prices Paid section!
Meet your fellow owners in our Owners Clubs

Chevy Colorado and GMC Canyon Engine Problems

1235716

Comments

  • donnyrdonnyr Posts: 15
    any 08 canyon owners out there that have any eng problems if so what type. this one i've got looks as if i'll be going thru the same issues as i did when my envoy had to be bought back . If so i will not be buying any more GM products. I just want to be treated like we the customer have a valid issue and not some jerk trying to get something for NOTHING. thats how they make you feel anyone else feel the same?
  • lift4041lift4041 Posts: 6
    I have owned my colorado for about a year and half now. I have had various problems. Such as it acts as if its running out of gas, and pressing the throttle just makes it worse. I have to shut it off and then restart it, then it runs fine. Wierd? I used to have the check engine light coming on quite regular, but haven't had it on for some time now. But I do have an engine rattle upon start up. As well as clattering coming from the valves or valve train. I have received a letter from GM stating that there is a problem with the cylinder heads on the L4 and L5 engines. The last time I went to the dealer they said that the problems that I am experiencing are not connected with the GM issue. I will be going back since my engine noises are worse. Hope I don't run into a problem with them since my check engine light hasn't been coming on.
  • donnyrdonnyr Posts: 15
    Thanks for your reply to my post. The dealer has had my truck for a month and a half, although they've supplied me with a Sierra, a $42,000 vehicle to drive, it's still not my truck. I'm waiting to see when and if the engineer will make an evaluation on what manner or method they will use to eliminate this issue. I no longer want the vehicle and would like nothing more than for GMC to replace with a new vehicle. They have told me to pick up and drive my truck, that there is no reason that I can't drive the truck. I informed him that the truck is not fixed and I don't want to drive the truck until it is. I wish you luck on yours and will keep my problem posted as to the results.
  • ddidioddidio Posts: 3
    I have an 08 Colorado that does the same thing. When I took it to my dealer, their
    spew was that there was no documented issue of this sort in their data base, so
    they said that it was probably normal. Some days later when I received a call from their customer service dept. wanting to know why I had refused their recomendation to change the oil to see if it would remedy my issue, I told her why in the world would you need to change the oil in a brand new truck with 2300 miles on it, number one and number two, if that was the diagnostic direction that they were going to use I don't think I would want them working on it period. She went on to reinforce the the fact that there was nothing in their data base to indicate that there were other people with this problem, so I ask if my complaint had been entered into the data base. She said "probably" not because they had not found a resolution to the issue. I said that makes no sense and therefore their data base is useless. She then asked what I thought should have been done. I said some sort of oil pressure test, especially at start up should have been done. She left me on hold for sometime and went to talk to her service manager. They then set up for me to bring the truck in and that they could do such testing. To make a long story short, they had the truck for 3 days and said that they could find nothing out of the ordinary. They at first said that they could not get it to make the noise and when I pretty much called them liars and took 40 bucks out of my wallet and said lets go over to the truck right now and start it up and I would bet that it would sound like a diesel engine when it started, the service tech said that he could hear the noise, but
    the pressure test didn't indicate any problem. The service advisor then chimed in that he had been watching the test gauge and it seemed to him it was slow in coming up to pressure, but nobody added anything more to the conversation and
    since they all said there was nothing from GM indicating this to be a "known issue"
    they offered no resolution. They did however leave me with the assurance that I had "plenty of warranty left" if it were to become major problem.
  • donnyrdonnyr Posts: 15
    I appreciate your input. They have had my truck for almost 2 months now. I informed the GM service rep. that I did not want the truck back. I wanted a new truck. She told me she didn't think they would do that, but told me that she was told that the truck was 98% right and nothing else could be done. I told her that if it's 98% right, it's still wrong. I told her that I am an aircraft mechanic and how would the pilot feel if I told him the engine is knocking, but it's 98% right. You think he would fly that airplane? I paid good money for this truck and I want it right, and I want to be treated like I have a valid complaint, and not trying to get something for nothing. GM has a bad issue about making people feel like complainers and like they're trying to get something for nothing. Just treat me fair is all I ask. I was called today and she told me that a decision has not been made at this time and that it would require 2 more days. I told her she's had the truck for 2 months, what's 2 more days? I also was told that no one else in the industry had a problem with that noise. I have since learned there are a number of people with the same issue. Thanks again for your input, but I don't a warranty to fix something that is broken now. I want it right to begin with. Warranty is good, I hope, but I do not want to use it on a new vehicle. I want it right, especially since there's less than a thousand miles on the truck.
  • jpfjpf Posts: 496
    At this point you may want to check out the lemon laws in your state. Good luck.
  • gfcargfcar Posts: 2
    I just purchased a 2008 Chevy Colorado 2.9L crew cab.  At 1400 mi I began noticing a knocking/rattling noise during cold start-ups. The noise diminishes after a few seconds, but has now worsened at 4100 mi.   I have recently brought the truck into the dealer for servicing.  Their initial diagnosis was that the spark plugs were making the noise!!!  Spark plugs!!!  I then had them keep the truck another day, they came back with a thought that it was now the air pump...possibly, but were not sure about "what noise" I was referring to.  I now have my truck back, the noise remains, and was told that I shouldn't worry because of the 100,000 mi warranty!  I spoke to the VP of the dealership today and a meeting is scheduled with the mechanic, VP, and myself later this week.
  • ddidioddidio Posts: 3
    I agree with everything you've said. I don't buy the warranty thing either. If it's
    not right they need to fix it or replace it. I know have a recall letter on it and the
    windshield wipers now come on for no reason. I am about to take it back for
    these so I will bang the drum on the noise again. There no doubt that they can hear
    it now because it has gotten more noticeable. I received a response to a post I
    made on another site from a GM mechanic who says that he has dealt with this
    issue. He claims that they "threw parts" at this engine for a week and never found
    the resolve. He claims a GM engineer told them that this noise was normal. It's
    apparent that GM is aware of this issue with some of these engines. It's just gonna be a bear to get them to do anything.
  • donnyrdonnyr Posts: 15
    I really appreciate your response. I just received from GM a notice that they want to talk to me about a settlement or what they are going to do about the vehicle. I missed her phone call this afternoon; she will call me on Monday. I feel sure that GM is not going to do anything but tell me the 100,000 mile warranty will cover it all. I informed her last week that I did not want the vehicle. The dealer has had it for 2 months and I feel with the other inputs I've received, I will have nothing but trouble with this vehicle. I don't have time to drive back and forth to the dealer so they can diagnose something they said they can't fix. I'll keep you informed what the resolution is. I really appreciate your input.
  • donnyrdonnyr Posts: 15
    I appreciate both you and ddidio replying to my message and concern about my 2008 Canyon. I just got off the phone with the GM rep, Ms. Diane Tolver, at 1866.790.5600 ex. 12307, and she informed me that the GM engineers are convinced that there is no problem with this engine and it's perfectly sound, and told me when the argument got somewhat heated, that it was a lubrication issue. I asked her to repeat that and she said it was an issue, not a problem. I told her that an issue is a problem. She said the case would be closed because there was nothing more they could do. So I will pick my truck up and start the process of the lemon law. I told her that if they could resolve this issue we would not be having this conversation. There is an unresolved issue, which I want addressed, and every Canyon owner should make an effort to demand something be done about this so-called issue. I would like to hear from more '08 Canyon owners to see if they also have some of the same "issues" that we have. A warranty is to fix something that goes wrong after the purchase, and should not be used to appease someone because of a problem found in a brand new vehicle, especially and "issue" that is not common to all like vehicles/engines.

    Thanks. Semper Fi
  • donnyrdonnyr Posts: 15
    I appreciate both you and gfcar replying to my message and concern about my 2008 Canyon. I just got off the phone with the GM rep, Ms. Diane Tolver, at 1866.790.5600 ex. 12307, and she informed me that the GM engineers are convinced that there is no problem with this engine and it's perfectly sound, and told me when the argument got somewhat heated, that it was a lubrication issue. I asked her to repeat that and she said it was an issue, not a problem. I told her that an issue is a problem. She said the case would be closed because there was nothing more they could do. So I will pick my truck up and start the process of the lemon law. I told her that if they could resolve this issue we would not be having this conversation. There is an unresolved issue, which I want addressed, and every Canyon owner should make an effort to demand something be done about this so-called issue. I would like to hear from more '08 Canyon owners to see if they also have some of the same "issues" that we have. A warranty is to fix something that goes wrong after the purchase, and should not be used to appease someone because of a problem found in a brand new vehicle, especially and "issue" that is not common to all like vehicles/engines.

    Thanks. Semper Fi
  • ddidioddidio Posts: 3
    Not to sound chauvanistic, but this seems to be a pattern with GM. A woman always responds to any issue presented. Both at the dealer and at the corporate
    level. Maybe they think you won;t go into a tirade if you are talking to a woman.At least that has been my experience here. Ms. Tolver probably doesn't
    realize that in a combustion engine, that a "lubrication issue" is a damn serious
    problem. So she can sound more sincere when she delivers the message. As I said I have received a recall notice, so I called the dealer service to make arrangements to have that done, also I have the issue with the windshield
    wipers just coming on for no reason. Guess what the answer for that was? Yep, they have no records indicating that complaint has ever been logged before. Now
    it happens that the service rep I'm talking to is the same one that I have been
    working with on the engine issue. I tell him that that has not gone away and that it is actually getting worse and that I am going to want to try and resolve this. When he asks how, I say that GM will either honor the warranty and fix or replace, or I can
    contact the states attorney generals office and file a complaint under the state's lemon laws. He asks, in a nice way, why I am not satisfied with the answer I was given on this matter. I say, OK, let's imagine for a second that I get tired of this and
    just decide to sell or take my truck to trade it . A person who wants to buy it or the
    used car inspecter for the place I want to trade it, starts it up and hears this banging noise. They ask what it is and I tell them that GM says that it is normal.
    They ask do I think it's normal and I say no. They ask how GM is addressing this and I say they are not because they say it is normal. Do you think these guys will
    buy or take my truck on trade? Me neither. He didn't say anything, except he will
    look into it when I bring the truck for the recall. What I can't understand is why they
    wouldn't just drop a new engine in these units . That can't be that much of a deal.
    The dealer that I bought this truck from is a local distributor for GM engines. They
    have a warehouse full of them. The salesman told me that. They say that they can't
    do anything in these matters unless it comes down from the mothership. And I really don't blame the dealer. Your right when you say that normal would mean that
    all these engines would do this. I guess I'll know more after I take it in next week.
  • leadfoot4leadfoot4 Posts: 593
    ddidio, there is a way to get the engine replaced, although it's a little extreme, and a bit risky. Load the truck down with a lot of junk, head out to the freeway, ease it up to speed in 2nd or 3rd gear, and DRIVE!! Just wind the beejeezus out of it till it just plain quits!

    Take it home, unload it, and limp it into the dealer and say, "Here it is, NOW REPLACE THE ENGINE"!!!

    The only reason I say risky, is because they'll probably try to weasel out of it, but you can always tell them, "You said the noise was normal, so I just drove it, like you told me to do......"
  • tm4tm4 Posts: 19
    leadfoot4, your an idiot!
    You are going to purposely destroy a vehicle and then try to blame GM? That's called fraud and if they find out, not only will it void the warranty, but you will have destroyed a brand new vehicle and will still owe alot of $$$.

    ddidio, how long is the engine without lubrication? Does it only do it for a split second at start-up? Or does it continue for some time.
    I had an old Ford Escort that I bought brand new in High School that made that horrible noise, but it was only at start up for a split second. It was also a lubrication issue and Ford would do nothing to correct the problem. I owned that car for 12 years and never had a problem with it. In fact I only got rid of it because I needed a family size car. It still ran great when I sold it.
    I don't want to make your situation sound like it's nothing, but it may not be a big deal.
    Now if it doesn't lubricate after start-up and your driving it down the road, that's a different story...That IS serious.
  • donnyrdonnyr Posts: 15
    hey mr. leadfoot
    your idea is something that a man from work suggested for me to do. altho it maybe something someone might do out of pure anger or frustration, but this idea has not crossed my mind in the least. How can I expect GMC to deal with me honestly if I were to be have like that.I simply want GMC to deal with me honestly as they expect me to, Even if GMC doesn't live up to it's end of the bargain, my action will be clean. if they can live with it i can live without it.
    as for the response that you got on your note ,I can only say that If he is willing to stand behind that eng or if he can state for a fact that that eng will last as long as his eng did I'll take him up on his offer . otherwise the eng has a lubrication issue as stated be GMC themselves FIX IT OR REPLACE IT and resolve this issue so it will no longer be an issue on a new truck with under a thousand miles on it. semper fi
  • leadfoot4leadfoot4 Posts: 593
    Obviously, a couple of you "gentlemen" have gotten a bit riled over my suggestion that the engine be "driven hard" in order to bring the problem to a head. I guess that I have to admire your desire to "honest and forthright" with a dealer that is neither diagnosing/fixing your truck, nor helping you get resolution from GM. You realize of course, that it is in their best financial interest to "blow you off".

    Call me an "idiot", but a few years down the road, assuming you still have the truck, when the warranty has expired, as well as the defective engine, YOU will be paying for the replacement engine. Who will be the idiot then??
  • donnyrdonnyr Posts: 15
    mr leadfoot
    I did not call you an idiot nor did I suggest that you were crazy. My point was that couldn't possibly bring myself down to their level and feel right about this issue.
    Thanks for your input. by the same token the other man suggestion to just drive it and forget it is equally as wrong SEMPER FI
  • jpfjpf Posts: 496
    I suggest that you contact an attorney that specializes in carmaker's litigation. You will probably find that there are many customers like you that are getting the short end of the stick. In fact, a class action suit may already be under way! I have read other forums where customers have sought advice from law firms that specialize in these types of claims. In many cases the automaker backs down and gives the customer his or her money back or replaces the vehicle. Good luck.
  • tm4tm4 Posts: 19
    Correct me if I'm wrong...Doesn't the OBD system on the Canyon know when you are redlining the engine? Won't the GMC Dealer be able to pick that up off the computer when you bring it in?
  • leadfoot4leadfoot4 Posts: 593
    "donnyr", I know that you didn't refer to me as an idiot, however someone else did. And to the person that did, I didn't suggest "redlining it" all the time, just working it a little harder, and if something is truly a manufacturing defect, bringing it to the surface while the vehicle is under warranty.

    It IS possible that the ECM may be able to read top speed and enging redline occurances, however I'm not sure that all GM vehicles do. I do know that my Corvette's ECM will.

    Keep in mind that I have a vested interested in this I-5 engine and its problems, as there's one under the hood of my '05 Canyon. Also, I would be livid if I was getting the run around that has been mentioned in this discussion. Thank God, my Canyon has been OK so far, but I have only 25,000 miles on it. Yes, I got the "warranty extension" letter, but if I remember correctly, that's only good for 7 years/100,000 miles, which ever occurs first. I doubt I'll ever see the 100,000 mile mark within that time frame, so if it quits, I'm the one on the hook.........
  • I have had my '07 Colorado (2.9 L., 5 speed, 4wd) for 28k miles now. I have had not problems at all. My only complaint about the truck is the lack of low end torque. I get good fuel economy (24-25 highway, about 21 overall). I recently towed a 16 foot Casita trailer from CA to WA with it and averaged about 18 mpg. While it's not a rocket ship towing, I found it adequete. Going up hills I simply put it in 3rd gear and went about 50 mph. I am very happy with my truck. Sorry you guys are having engine problems. There is no excuse for that in this day and age, and GM should step up to the plate.
  • First my 2008 Colorado doesn"t start on three seperate occasions...no one can figure it out. I just received a letter from GM stating there is a problem w/ the CD player draining the battery.....Do you think? The windshield wipers go on automatically ... whenever. This problem occurs a couple of times a day...and then not for weeks....HELP!!!
  • jpfjpf Posts: 496
    Funny things happen with a weak battery. Dashboard lights flashing, wipers working when they shouldn't, etc. The problem may be the CD player draining the battery. I would get that problem fixed first and recharge the battery. If it still occurs then you know it must be something else. Good luck.
  • Recently my truck did not start. I noticed that the anti theft light was on (that light on the dash board this has a car with a lock over it). I locked and unlocked the doors a few times with the remote control and with the key, and It started the engine. A few days later the light came on again, but this time it was while running. Today I took it to the dealer to check out what was going on.
    The service guy called me and told me that the problem was that the ignition switch was defective and I dont have any warranty because my truck has 42k miles, and the cost of replacing it was $259.00. I told the guy that a friend of mine had the same problem on the same truck, the only difference was that he had warranty, and I ask him if this was the same problem that some people had, why GM has not issued a recall to fix this problem. He told me that he did not know nothing about any recall. And to make matters worse I had to pay for the re programming of the computer $85.00.
    I called GM customer service and they told me the same. No bulletins had been issued on this matter.
    Guys' please encourage everybody to call customer service for every problem you have on your truck, no matter how small it is.
  • Does any of you had received any extended warranty for any problem?; like the engine one. If you do, please can you post any reference number or any information they gave you so I can use It to call customer service. They say they know nothing about it.
  • leadfoot4leadfoot4 Posts: 593
    Check post #131 of this discussion. The letter is shown there.
  • donnyrdonnyr Posts: 15
    Hello Fellas
    I want to update all of you on my journey thru the GMC debacle and thank each of you for your input and just knowing that there are other people out there with the same "issue" as myself. It was good to know since GMC was telling me I was the only one. The dealership in my town really took an interest in this and resolved it by taking my truck back and replacing it with a new one. I haven't had the truck long, but it's nice to know that I can crank it up and not sound like a diesel starting up. It was a persistent struggle and sticking to my guns, not throwing a fit, but showing a genuine concern about this issue. The people at the dealership were great and bent over backwards to accommodate my issue. It is highly unlikely I will be buying a GM product again since this is my second lemon in the last 5 years. GM is like a bad used car salesman when it comes to problems with a sold vehicle - they don't want to hear it, and they don't want to do anything about it, and treat you as if you're trying to get something for nothing. I have nothing but praise for the dealership personnel at the GMC dealership in Kennesaw, GA. Terrific people and outstanding service, but a sub-par product. Thanks to all of you and my ISSUE hopefully is resolved. I only wish that this dealership had a more superior product because the people are outstanding, and it has been a joy to work this ISSUE out with them. GOOD LUCK! Semper Fi.
  • jpfjpf Posts: 496
    Good to see that GM resolved the problem to your satisfaction. I would not give up on GM altogether for your next purchase. I believe they do make some good products (Lacrosse, Lucerne, Malibu, Impala, full size trucks and full size SUV's). However, they also make unreliable vehicles like the Trailblazer/Envoy, Equinox, Aveo, Uplander, and the Colorado/Canyon. It's just too bad that GM can not design and build consistent quality vehicles across all their makes and models. Good luck.
  • leadfoot4leadfoot4 Posts: 593
    Good luck with your new ride! Hope it works out better than than the 1st one.
  • poncho167poncho167 Posts: 1,178
    Actually GM customer satisfaction when it comes to warranties is rated as one of the best with the least compliants compared to other manufactures. I believe it was data collected by Wards or JD Power, I don't recall.
  • I have the exact same problem... my truck has 44k and the keylock feature is bugging out... its locking my ignition. the keys are the same keys i left with when i bought the truck. this is wrong. ill call GM but these guys are out to rip us off if u ask me. my warranty is expired too, right at 36k.
  • well im part of a list of unsatisfied customers.... and ill tell you what, GM buys there satisfaction rating from JD POWERS.... next time read consumer reports for a real rating.
  • My dealer keeps trying to sell this to me claims it improves mileage. I have a 2006 with 30000 miles on it. Any good? :confuse: :confuse: :confuse: :confuse: :confuse:
  • dmathews3dmathews3 Posts: 1,739
    Only thing it improves is his pocketbook. Don't you think if it worked GM would include it as standard equipment on their trucks since they are losing there you know what due to the poorer mileage of trucks? I think I would think about finding another dealer that was more up and up with his customers than trying to line his back pocket.
  • poncho167poncho167 Posts: 1,178
    Consumer Reports is not a legitimate magazine. Magazine surveys are conducted by paid subscribers only. Flawed/contraveral tests with appologies are what CR is known for.
  • leadfoot4leadfoot4 Posts: 593
    Jesse, WHAT, exactly, is a "Granitizing kit?? Cars have been my hobby/part time job for the last 50 years...I've never heard of such a thing....
  • dbcruedbcrue Posts: 6
    donnyr, I have been going through the same thing as you are . I have a 2007 Colorado and the dealership has it right now. Trying to get it to diesel. They are just setting on it ,cause i cant just sit there for two days and watch them start it.Is there anyway you could email me. [email protected] Like to here what you are going thru. Thanks
  • dbcruedbcrue Posts: 6
    My 2007 Colorado does it.and its a2.9L.Its at the dealer now.Getting looked at
  • I have a 08' Colorado, I-5 with 4500 miles. My question is at cold start up I hear what appears to be the valveIt only lasts for 2-3 seconds. Just don't feel that the engine should do that. Took it to the dealer and was told it was baffles in the muffler.(?) Didn't believe him and it still occurs. Back for a second trip. Tech checked the settings and was told that it is normal for the truck(excuse). Stopped back and started 4 vehicles with I-5's. 3 out of 4 tapped at cold start. The one that didn't had been driven earlier. Love the truck. Power is great! comfortable but if this thing is going to suck or bend a valve at 50000 miles I'm going to unload it. Has anyone else been experiencing this?
    Thanks
  • poncho167poncho167 Posts: 1,178
    In some trucks it is a normal sound of the fuel injectors.
  • thanks for the help. Do you know if it is common in the I-5?

    Thanks
  • jpfjpf Posts: 496
    Check out the forum for engine problems. Also, you may consider switching to a higher quality oil (e.g. synthetic). Good luck.
  • poncho167poncho167 Posts: 1,178
    No, I am not sure about the I5 and fuel injector sounds. A friend has a Dodge Intrepid and that was his issue though his injectors were going bad. Sounded almost like the engine valves initially when I checked it out.

    Put some fuel injector cleaner in the gas and see what happens.
  • hi
    sorry to hear about your problem .I also had the same issue read my post on my 08 canyon they finally had to take it back . the problem centers around the timing chain tensioner. They adjusted mine and the issue went away not totally but better .I didnt accept it. Now i have another 08 canyon which had the same issue they adjusted the tensioner and i am pleased with it so far. My truck (#1) had less than a thosand miles on it at the time . Don't let them tell you that this issue doesn't exist. I researched it and went to dealers and cranked brand new trucks and it is not some common to the I-5 eng GM HAS AN ISSUE!!! stick to your guns GM has a fix and knows ful well that it is an issue .don' let them snow you with the warrenity thats a cop out. I use the word ISSUE because GM says THAT IT IS NOT A PROBLEM BUT AN ISSUE, TO ME IT's A SERIOUS PROBLEM
    GOOD LUCK semper fi
  • Thanks for the help. I'll make a call monday.
  • I have a 2004 that does the same thing. I was told that its because i had install the wrong type of oil filter, one with out a check valve. But I know that is not the reason for the sound. I've been changing the oil regularily and have had installed factor GM filter. My sound is getting worse and it now clatters while driving down the road. I to love my truck and am concerned about the problem. I have been a Mechanic for over 30 years and I know what loose or bad valves sound like, But the dealer said that my problem isn't covered by the GM warrantee or recall letter because there isn't any trouble codes that come up or any miss fires. So as it is right now. They will not do any thing and probably never will.
  • The only person that has changed my oil is the dealer. I only have 4500 miles on the truck.

    thanks very much for the feedback
  • Guys, the oil filter having or not having a check valve would NOT be an issue with the Canyon/Colorado engine. The filter is in the VERTICAL position on this engine, so how would the oil drain from it, when the engine is shut off??

    The dealer is giving you a load of "hooey".......

    BTW, I've been using Baldwin filters in my Canyon ever since the first oil change, and I've had no such issues. (Oil changes every 2000 miles, 25,000 miles currently on truck)
  • Guys its not the oil filter I'm telling you from exp that GM knows the issue and has a fix and it exist in the TIMMING CHAIN TENSIONER ADJUSTER > ASK THEM ABOUT THE REPAIR IT HAPPENED TO ME TWICE ON BOTH MY )08CANYONS ONE THEY TOOK BACK. HOPE THAT THIS WILL SOLVE YOUR ISSUE
    SEMPER fi
  • i have the same problem on my 2009 chevy colorado 4cylinder right after first gear on a fresh start i hear like a spring noise its annoying is this normal, i took it to the dealership and they told me that they cant to anything beacuse the engine is brand new with only 1500 miles they said to wait atleast until i get 3000 mi then if the problem continious then they crack they engine open. what should i do
Sign In or Register to comment.