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Pontiac G6 Transmission



  • bvdj84bvdj84 Posts: 1,724
    Well, I dropped my car off today. They gave me a rental again. They called me later on and told me they could not duplicate the issue. I explained the whole issue over again to them. Obviously, I wouldn't hassle with going to a dealer if there was nothing wrong. Duh! So far they have been nice. But, it makes me frustrated that they cannot find anything. They are keeping it another day. Drive it more, it does not seem normal.... at all! I am not making it all

    I have 2 years left, and I feel like I am driving an old car!

    Other than short of tearing down the transmission which could come down to that if I throw enough of a fit, or unless they feel it too or they come up with an error code....than that is it. But, I feel like there is something truly not right.

    I am sad, frustrated about it all, because I like the car, but the engine is seemingly old and finicky. Yes, I signed a contact, however when does it cross the line?

    What should I do? Any advice would be greatly appreciated.
    I want out!!
  • bvdj84bvdj84 Posts: 1,724
    New: Got a report of no issues found on my car. I was disappointed as I truly know that something is not right. The rental runs much smoother. You know who you slightly push down on the gas, it'll move up in gear, you really don't feel it, but you can see it move higher up on the rpm's. Well, on my car you can feel it sliding, shifting rough up and down this gear if you happen to press on the gas slightly making it go down in gear. That sorta gives an idea of what is happening with my car.

    However, I was going to pick up my car after work last night... they dropped off the key fob to me at my work, while locking my "key" in the car so I could pick it up. Leaving the rental there. BUT, I searched forever for the keys, glove box, console, underneath the seat, mirrors, back seat, trunk..... I was mad! I just wanted to take my car home... I searched... I was like dang they didn't even put the keys in the car.
    Well, I get a phone call this morning saying that I need to move my car (it was blocking the service bay) I was like, you didn't even put the keys in the car...... They did..... Guess where?? It was underneath the floor mat...??
    Hello? My car was locked!!! Out of all the dang places, Seriously? Well, they told me it would be a charge for a new key to be cut, so it could be moved... I told them.. I was not going to take the fault for this... as that no one told me they would put the keys under the mat? Sure, I could have looked there, but it was the last place I thought it would be in a locked car. Plus, I was fried from work! So, they told me they would take care of it. Wow! I was mad they couldn't take my car home last night, I wanted it... but under the mat? It was locked.

    I am so frustrated, and yet laughing, because the console would have been good enough to put the keys into.

    I don't know, what do you guys think? Did I just walk right into that or was that a little odd??
  • dave06g6dave06g6 Posts: 24
    Like I said before - you're fortunate enough to be dealing under warranty. When they figure out the result of your codes and transmission shift issues - let us know. I'm not surprised at your experience however !
  • gonogogonogo Posts: 879
    Hi, I'm new to the G6 site, am trading my 04 Malibu LS for a 09 G6 sedan today, I know, I'm a glutton for punishment. Got a good deal from a bankrupt company for a discontinued car.
    The reason I'm posting is I have read a few of the transmission hard shift problems. I am aware that certain codes will cause the transmission to go full pressure and will hard shift. Has really nothing to do with a the trans, the code problem just needs to be fixed.
    I'll be hanging around.
  • djasperdjasper Posts: 15
    Update, The service guy called this morning and they believe the problem is the connector on one of the actuators. The new guy on here is correct about the codes causing high pressure to the tranny. Apparently one of the connectors is broken and therefore the actuator is not working. The acuators are on top under the plastic cover. They are side by side, the one toward the front of the car is the bad connector. Something you may want to check as well. It could be cam pos sensor going bad, the actuators, connectors, wiring. But the good thing is that the tranny is fine. I am also having them checking the steering for the GM's infamous clunking noise. They are going to see if they can grease it otherwise a loop kit cost around $100. Mind you, this is not a safety issue, just a nuisance:) The connector is still going to cost me $50.
  • djasperdjasper Posts: 15
    Hi New guy, I don't think you will be dissappointed, I do like the car, rides and handles well. I had a Grand Prix GTP, that I traded in for this car, The G6 actually has more room in side from front to back. The G6, believe it or not, handles better that the GTP. We usually get 26-27 mpg all the time, mixed driving. Haven't done any roadtrips yet. I think all manufactures have some things go wrong, this just took a liittle time to figure out. The connector on the actuator is hopefully the problem with my G6. Talk to ya.
  • gonogogonogo Posts: 879
    I bought the base model with a the Sun and Sound package also Preferred group, pretty well loaded. I thought it was cool to check tire pressure using the DIC. Only have 70 miles on it so far.
  • bvdj84bvdj84 Posts: 1,724
    Thankfully, the car is actually running better now! When the car was in the shop being inspected, I had the oil changed, then I picked it up. I am finding the engine to run better now. I did push the oil change past due this time. It had been last year early winter, late fall?. So, it needed it badly. The performance is much better now too, the true test is when I am driving up and down hills. It doesn't want to change gears as much to keep it going through the hills. The rough shifting is pretty much gone.

    Hopefully, this was the issue, because it does feel better. Who knew a simple oil change would make a difference.

    I am thankful for my warranty. I also need to take a step back and realize its a lease... not forever, its just a car. Either way, I know I won't keep it the whole lease... next year this time I will have a better position at trading. 1yr in, and trading is too soon. I have to be thankful for what I have.

    I really love the car.. it may not be what I want, but it certainly pampers you with all its features. Some of which cannot be had on others.
  • dave06g6dave06g6 Posts: 24
    OK, now we're getting somewhere - I wondered about that too after reading the TSB's on chaffed wiring to those sensors. When inspecting mine I could see that the one at the rear of the engine (toward to firewall not the front of the car) has been taking alot of oil run off - possibly from a few drops missing the filler opening at the top of the motor during each oil change process. It certainly looked much more grimy then the other connector.

    Is that the one they are replacing ? The Code that is coming up (P0010) is the actuator for "Bank 1".

    If you could let me know if that is the one they replaced (connector) and perhaps what the part # is on your invoice - I am going to give that a shot.

    Loop kit ? Never heard of that - the front end noise is usually a weak lower control arm bushing or the input / output shaft on that side of the wheel assembly. There are TSB's that point to it, greasing it only lasts for so long.

  • :D I genuinely hope you have great luck with your new car. I absolutely loved my first G6; it was an 06 Sedan GTP automatic, fun to drive reliable roomy for a smaller car. It had everything I wanted, I loved it; mad as heck that I let a "friend" talk me into trading it in on the one I have now (07 Coupe GT, manual); lower payments, cooler look, little better gas mileage... it all sounded good .... if I would have just kept the 06 it would be paid off this month and I would still love it; I am sure of that.

    this one... at only 13K miles I the nightmare of the last two years started. Not all G6's are bad, supposingly they have decided that the 07 with 3.9L (GT) manual transmission has a programming issue, it's never been right.... imagine that... just what I have been saying for 1.5 years! :mad:

    Wishing all the best, enjoy your new car!
  • After a year and a half of complaining of problems with my 07 Pontiac G6 GT, Manual Transmission, everything from electrical shorts, to burnt clutch, you name it, it's never never run right. It has been in the shop for well over a month now; replaced everything they can guess to replace brought in an engineer; supposingly they have determined that the programming in the car is flawed. That it has never been right ... hmmmmmm never been right..... just what I have been saying since it was new and no one would listen to me. Now they are telling me to come pick it up because there is nothing they can do until they write a new program for it; but "its good news because we finally know what's wrong with it". BS They say this car is extremely rare so finding others with the same problem is unlikely.... hello if it is in the Computer Program that runs the car EVERY ONE will have the same problem. DUH.... If you own one of these cars you have a problem, and it is not in your head. :lemon:
  • djasperdjasper Posts: 15
    Dave, I replaced both sensors but it is actually the connector to the actuator on the top of the engine. If you take the plastic cover off, you will see, what looks like two sensors, to the left side. They only about an inch apart, The front actuator connector, is what they are telling me, is bad. I talked to him again yesterday to confirm. I didn't see anything wrong with it but will give it a try. The connector is going to cost $50 and that is ridiculous. He said it isn't making good contact and if you move it around then the actuator starts working.. I will be splicing on the new connector hopefully Friday.

    Yes the code (P0010) is for bank 1. I will let you know about the connector part # for the actuator, if that is one you want. I hope the dealer and I are talking the same language. That is why I called him again yesterday. We drove the car for a few hours after he reset the computer and it drove great untill the light came back on and started shifting hard, once more..

    I meant lube kit for the steering shaft. Don't know what I was thinking when I wrote that. Didn't need the kit, they tore it apart and lube the shaft and it is like new again..
  • dave06g6dave06g6 Posts: 24
    Very interesting. Which connector to the Cam Position sensor is the bad one that they discovered ? The one at the back of the engine (closest to the firewall) or the one to the front of the engine. I think Bank 1 is the back. I can see that the sensor there takes alot of dirt off the back of the engine, the connector itself has some oil residue / runoff on it from the top of the valve cover (few drops maybe at oil change times) I bet this is causing an abnormal resistance at the connector and thus the ECM thinks the Cam Sensor is acting up. You're saying yours are about an inch apart ? Are we looking at the same thing ? My Cam position sensors (2.4L engine) are one at the front and one at the back. If you mean left & right, as in passenger side and drivers side - then I am confused. Mine are both on the drivers side of the motor, one at the front and one at back.

    I am going to pull mine apart this week (connector) and clean it thoroughly with electrical contact cleaner then re-install. I don't see how they can become loose or bad in any way - they are simple connectors. $50 is crazy I agree !

    I did the same steering shaft repair under warranty as well, worked for awhile until the grease wore out. They eventually diagnosed a bad lower control arm and replaced that.

    Let me know what you find out on the part # from your invoice. Appreciate it... Cheers
  • bvdj84bvdj84 Posts: 1,724
    Well, My car got all grumpy with the gears again last night. Last night one shift got pretty intense. That was the first time it did it that hard though. Then it was just normal characteristics later on. It seems like sometimes its fine and then other times, the gears get a little weird. But, with the JOLT I felt last night, that has to be mechanical, not computer based.

    I am not sure what is happenning, but of course, the dealer found nothing wrong.
    But, yesterday, if it did that when they were in the car, they would see the amplified version of what it does. There are something a person know when driving a car,that tells you its normal or not. Its not always normal.

    I am going to just keep driving it, if it gets worse, i will bring it in. But, last night concluded that the issue I have can be amplified to a bigger problem, it was literally a jolt, kick down in gear. So, the problem is there.

    I think that was a way of letting me know, hey, its not just me feeling things, but perhaps a real problem, that seems to be slowly showing its face with time.

    So, I will give it time. Then when there is a transmission problem or issue it will show up big time eventually, then they'll be forced to take action.

    I asked my Pontiac company rep if I could call her if it happened to go wrong during my road trip to florida... and if they would get a rental, and tow the thing to somewhere at their cost. That would be so bad! It would get their attention though right. I am just so done with leaving my car at the dealer, so I will wait, any issue eventually gets worse... and last night proved it, and was a sign to me.
  • djasperdjasper Posts: 15
    I take the car in tonight to have the connector put on tomorrow. I would put it on but I would rather the dealership do it. They have all the necessary tools, splice tools, heat shrink, heat gun and they can clear the code again.
    The mech told me that it was the actuator conn causing the trb, not the sensor. The actuator has something to do with the variable timing and is located on top of the engine.They have INT and EXT written near them. There are two and they are literally an inch apart. He said it is the one towards the front. He said the conn is not making good contact and the act is only working part of the time. We shall see. I did look at and I didn't think the connector looked bad. oh well, It must be done. Will let you know tomorrow or Wednesday. I pick up the car Tuesday evening..
  • dave06g6dave06g6 Posts: 24
    Hmmm, still perplexed at your description that they are about an inch apart. There is a cam sensor on the front of the engine on our 06 2.4 litre, its by the upper cam of course on the top right side (if you are standing at the front of the car) The one at the rear is of course by the other cam, basically in the same location as the front one - just at the back of the engine. Here is a picture of the 2.4litre in the chevy HHR, its very similar and you can see the cam sensor sticking out of the cylinder head in this picture, its above the oil dipstick pointing toward the drivers side of the car: c/LE9/09%202.4L%20I-4%20VVT%20LE9%20HHR%20LoR_n.jpg

    You are talking about the 2.4 Litre G6 correct ? I hope your issue goes away then with this simple change out of the connector. I've yet to take mine off and ensure its tight on the sensor, perhaps put some dielectric grease in there too for better contact.

    Pls reply though if this clears up your code fault issues and occasional harsh shift conditions.

  • This discussion is very interesting to me since it describes the exact problem I have with my 06 G6 2.4L. Transmission shifts hard going into Reverse or Forward, and each shift up through the gears is hard with a good thump. Interestingly, my car first did this about 2 years ago and the dealer did some sort of "firmware update" to the computer and that fixed it. It began doing it again this spring, but not all time time. Sometimes it is fine for several days and the engine light goes back off, then it will start doing it again. At first it seemed to be temperature related. I'm waiting for it to do it all the time before I take it in to be worked on. I'm interested in seeing what other find is the cause. My dealer is one that is being closed by GM so I don't know how hard they are willing to work to correct this issue. Anyway, I'm off warranty now so it's at my expense.
  • dave06g6dave06g6 Posts: 24
    Off warranty - I know how you feel. Fortunately for us they have just decided to take ours back early (lease) with the condition that we purchase or lease another vehicle. Gladly - since they are going to swallow the remaining 6 months of the contract. We are ordering up a Pontiac Vibe next week with the 2.4L Toyota Camry engine and a 5 Speed manual thank you very much.

    Eventually GM will issue a TSB on this issue once they have either replaced a few thousand cam sensors or electrical harnesses nation wide under warranty. I am pretty sure its electronic and not a mechanical trans issue.

    Wish you guys luck....
  • bvdj84bvdj84 Posts: 1,724
    If they are forcing you to eat the 6mths, then they are not doing you a
    That is too bad.

    I was like when the Pontiac Rep asked what they could do to make me feel good about my car again? and I stated, I want out. Their like... well you signed a contract... I am like uhhh, well you have to uphold your end of the contract too. Like providing a quality product.

    My engine is NOT normal. I test drove an 07 with more mileage, 2 09 identical rentals, and they are drove much better. Smoother, quicker, the darn transmission didn't act up.

    So, I will drive my 08 G6, and no that I don't have too much longer before I will get out. I won't have to keep it the whole lease, but trading now is too soon though.
    Usually 2yrs in, your doing okay. My dealer has been nice, and they know that I did not want it anyway. (long story).

    I love the car itself, but hate the engine! I want a VW Wolfsburg edition with the 2.0T engine!! It will happen. If you want anything in life, you have to make it happen. Its just a car.
  • djasperdjasper Posts: 15
    Not a fix, another $50 gone and the trb came back a day later. The connector he was refering to is not for the sensor, but for the actuator. If you are standing in front of the car, looking at the engine, take off the plastic cover. The actuators are on on top,left side, sticking straight up. Like I said they are about an inch or apart. The cam pos sensors are as you described one in front and one towards the firewall. I replaced both sensors already. I will give them a call tomorrow and ask them about it again. Maybe the actuator is bad. Will continue this until they remedy the trb.
  • dave06g6dave06g6 Posts: 24
    OK, I understand what / where you are talking about now, sorry the trouble is still there but doesn't surprise me of course. They must have an issue with the actuators themselves... keep hammering them until they replace them, good luck. We get our Vibe at the end of the week, not to say that the Camry engine won't ever suffer from something similar but it surely won't hammer the transmission as a result being a manual ! I'm going to follow this thread for sure.

  • dave06g6dave06g6 Posts: 24
    No - they are taking care of the last 6 months which is mostly what made our decision combined with the other great incentives going on in our region now for any GM product, well in this case, a GM / Toyota product, which is the main reason we chose the Vibe. I'm done with automatic transmissions for awhile. Stay patient, they will figure this out eventually and issue a TSB, at least you have your warranty, others are not so lucky.

    Every car has its issues - even VW (my friend is a VW mechanic) The 2.0 engine has been a good stable for them in many cars - but they all use similar technology for engine and powertrain control management.

    Good luck.
  • bvdj84bvdj84 Posts: 1,724
    Well, I figure I will only be out of it in about 12mths or so. By then having a lease for 2yrs is usually a perfect time to get out. I've done it before. Unless it comes out to show the symptoms more, than I am not going to bring it to the dealer. It really is hit and miss. But it is there. Not really worried. Its annoying though how a company could do this to you. Reason enough to be upset with GM. Honda people never treated me this way. Then again, Honda isn't bankrupt.

    However, after this car. I will find it VERY hard to ever return back to a GM product. Why take that kind of risk.

    This goes to prove, always get what you want from the beginning, never opt for something else. It never works out. Then you'll keep the car longer, be happier longer... and have more pride in it.

    I have pride in my car, keeping it good looking, detailed, but I do not have pride in the engine. It feels like I am driving a car that has an engine with many more miles on it. If I want to drive used, I would have bought used.

    I will keep doing research and working closely with my dealer. First chance, I will be out. But with all the said. I can understand why people like their G6's or Pontiacs. Am I a true fan? No. I am a Honda guy! I love VW too!!
  • toysg6toysg6 Posts: 4
    Hello. I am so glad that i've found someone who is having the exact same issues that i'm having. This 2008 pontiac g6 is a piece of junk. I hate it. My transmission jolts/lunges all the time, around the same speeds. Especially when I take off from a stop light. I took it to the dealership and they couldn't find anything wrong. Do you know what else I could possible tell them to help find the problem? I am really irritated with this car. Please help me.

    Also when cranking the car, many times it acts as though it doesn't want to crank. When I turn the key, it just keeps turning over like it doesn't want to start. Has anyone else had these problems?
  • toysg6toysg6 Posts: 4
    Hi! I am very new to this discussion, and I don't know alot about cars, so I need you to explain some of the stuff in your post please. My 2008 pontiac g6 2.4 is having the same cranking problem. The dealership said nothing was wrong. Is there something that I can tell them to check for? Is there a shortage somewhere? Any insight would be very very helpful. Thanks.
  • bvdj84bvdj84 Posts: 1,724
    I have explained everything to the dealer. They rode with me and they felt it once. But, "never a sign" after that. I will just let it be, and realize that this is not normal. Luckily, I lease and you all seem to be having more issues than me. So, I will live with it. I really don't have too much longer. I never though my engine was normal to begin with. But, then again, this is my first "GM" product. Trust me, I will not be back. Even the new 6spd automatic 4cyl out on the GM car is nothing special when compared to the competition. My other 08 Jetta, my old lease..06 Accord literally blows the G6 4cyl off the road! In terms of overall torque, engine quality and feel. They may get the "mileage" but its no fun. Do not compare a GM car with a Honda. 2 different segments. Those hondas can get more mileage than stated.

    My next lease, I am really focusing on the engine, perhaps a VW with a 2.0T engine, or a Honda product. Though, I could get by easily with a 4cyl Accord, after what I have been through, I would get the V6 for the power.

    However, I have thought about going to another dealer to have it inspected. But, I almost don't care. It is their car, not mine.... when it comes to the engine, I am responsible for the maintanence on the car, oil changes, tire rotation, overall cleanliness of the car. Anything more than that, its out of our reach or care.
    Other than its annoying. So if it blows up, or does anything else, I'll just call them to pick it up.

    It'll do for now. Its all good. My friend got a new 09 G6 4cyl.... She loves her pontiac's. But, I know that their is so much more bang for the buck than that. I will try not make this mistake again. I am over it. :shades:
  • dave06g6dave06g6 Posts: 24
    I'm convinced through my months of net research and following the erratic codes coming off our car that they have bad cam sensors, cam actuators or its in the wiring to them, although these issues feel mechanical like a bad valve body or torque converter, the randomness of the issue does not relate to failing mechanical transmission components - it would grenade itself much faster.

    I say again though - these Ecotec 2.4 engines are an excellent motor, both in build and power characteristics - Opel has done well with them, they are just mated to poorly designed electronics and if its in the wiring or harnesses of these vehicles - well we can thank the UAW union assembly hand for that.

    If you have warranty on it - by all means, keep chasing it down and go to another dealer, why not... just remember the 2006 does not have extended powertrain coverage. Thankfully - we get rid of ours tomorrow, the dealer swallowed the last 6 mos of the lease and we have purchased a Vibe. Kind of ironic that they just redesigned that vehicle and this week announced the curtain call as well for the GM / Toyota plant in Freemont.

    Oh well, looking forward to our New Vibe or Matrix / Camry - whatever, its all the same... we opted for the 2.4 Litre Camry engine mated to the 5 Speed Stick, no more automatics thank you very much.

    As for bang for the buck... try and beat it - its tough, drive one! Good luck, let us know if you ever get this solved!
  • djasperdjasper Posts: 15
    I agree with you. I have worked in the telecom world for 15 years and the radomness of the problem relates more to electronic than mechanical. I've had
    plenty of electronic parts, in my line of work, act in this way. Could be actuator, could be a partial open on a pos or neg wire. This is a pain and I have been looking at trading, if I can get this thing to run right for a long enough time. I will purchasing a manual tranny. The wife drives the car and didn't want a manual before but she will have one this time, she can drive a stick just wanted the convenience.
    I talked to the service manager Monday and let him know that I was disappointed. I knew the connector wasn't bad but I figured if they guess then they will make if right with me. He explained that they were not trying to rip me! The main mechanic will be back Monday. They are to call me for the next step. I told him about the firmware upgrade but we will see. I told him that I can't afford their guess work!
  • dave06g6dave06g6 Posts: 24
    Had the same fears as you, out of warranty and could not go down the expensive road of constant diagnosis and parts replacements - anyone under warranty needs to keep at this until a solution is found. I bought an OBDII scanner and was keeping track of the codes it was sending (P0010 and P0012) my scanner also saw the transmission / powertrain control module and it was always clear. I am thanking my lucky stars that the car is gone now and no longer our problem.

    The Vibe is a great car, check it out... when you test drive the 2.4L Camry engine mated to the 5 speed manual you'll appreciate the Toyota in it... too bad this is the end of the line for this car and GM's involvement with Toyota - one can only hope that they learned something. In my opinion - the Vibe is the only Pontiac to buy at this point !!!

  • gonogogonogo Posts: 879
    I bought a 09 G6 with 5 yr 50 K warranty, it will gone after 5 years. The warranty covers all but normal maintenance items, not too bad.
    Have the GMPP Major Guard, learned my lesson with a Z body Malibu. It fell apart after 40 K.
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