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Comments
I've had nothing but nightmares with my 2003 GMC Envoy XL - V8 - since I purchased in Early May. I'm tired of taking my Envoy into the dealer every month for something new.
The latest problem is an intermittent start problem. I have full battery power -- I know it isn't the battery -- (I'm on my Second Battery already) -- if I wiggle the gear shifter -- right/left/up/down for about 2 minutes I can then start my car. I may go 3-4 times without having the problem again. When I took it into the dealership they said they could not recreate the problem and the computer said there was nothing wrong.
Is anyone else having or had this problem? If it has been repaired, can you tell me what they did so I can let my dealership in on the fix?
I like the car -- but I hate that I'm on my 6th different problem in 7 months.
Thanks!
Mitch
I'm an owner of a 2002 Envoy. So far, I'm happy with it. Even with some minor problems I had before. I just discovered a problem, hopefully I can get your help. I turned on my A/C the other day when the engine is idle, I could see the RPM went down and surge up all the time than the engine stall. I tried it so many times, and it still does the same. Unless, I turn off the A/C.I tried to drive the car around, but the same thing happened. I brought it to my dealer ship and let them know what's going on. They said they can recalibrate it, but the problem won't go away unless the fuel injection cleaned($270.00). The car has 27K miles on it. It just doesn't make any senses to me. I owned 3 cars that had fuel injection, but never had to clean them or this kind of problem (their mileages :75K, 115K, 90K). The way the technician explained to me, somehow I just can't believe it. I've been on this site before I bought the car and until now, but never seen this kind of problem. Has anyone had this kind of experience? Please help.
I do run a bottle of fuel-injector cleaner through my tank occasionally. The cheap ones probably don't do much, but I've heard Chevron's Techron is pretty good prevention and have read a little about a stronger (and more expensive) one called BG 44K. Most major brand gasolines have cleaners in them, so I try to use major brand at least every other tank or when I can.
I have a 2002 Trailblazer 4x4. The problem is if my truck sits in the garage over a week long the initial starts rev the engine rpm high. This is understandable but the first 1/4 mile out of the garage was powerless from the engine. It looks like the truck reluctant to go and engine rev.s high. After the engine fully warm up then everything is normal. Program problem??
How do I know I have passive alarm system?
Anyone has the same problem like I do??
You mentioned the engine will actually stall. A less likely cause could be a pending compressor failure. For example, if it's load is such the IAC can't compensate for it.
I suggest you get a second opinion.
Good Luck
I am fascinated with this issue and the fact that no one can champion it. I’m no scientist mechanic and have learned a lot from the board, (thanks guys). So I e-mailed 7 pages of your candid comments on “clunking” to my dealer who has never had anyone with this problem. This is a large volume dealer in Toronto, numerous bays ect . The “clunk” in my truck is barely noticeable and I’m not complaining. Lots of speculation from the trany guy though. They’ve taken your comments up the ladder in GM in a non threatening way. If it ever comes back down the ladder I’ll post it here. I’ll bet they’ve got a fulltime donut eating guy locked up in a room somewhere reading this site .. Actually it would be in their best interest to read it wouldn’t it?.
Poping And Cracking Noise, I can get the rear passenger door small window to pop and crack just by pushing on it.
baltychen sounds like you’ve got the infamous “engine roar”. Search this site on that one!
Ok, Who’s got the most snow so far? Not me for sure. And who has a good rip snorting slip sliding almost trashed my truck cause of that idiot story?
Problems like you describe have been addressed with recalibrations especially on '02s. If you are still in warranty (otherwise they will charge you) you need to go to your dealer and have them reprogram the PCM with the latest versions. Listed below are some of the problems addressed:
calibration to correct cold start idle surge and hesitation
calibration to correct cold start/shift problems
new calibration to address complaints of fan noise
new calibration for improved fan control
Response from east of Phoenix... zero and counting!
I'm sure our Canadian winter visitors would keep the folks back home informed if it did!
Pepper50, The A/C is on when the engine is idling - than it would surge up and down until it stalls. When I drive the car with the A/C on, then it would cause a rough-running. But when I turn the A/C off, everything is normal.
Discofever, would it be normal if the Throttle Housing is dirty with high carbon and oil build up? If so, is it because of bad gas or what else? I'm going to clean the throttle housing. the fuel filter on the Envoy, do you know where it might be? Also, where is the PVC vale? I'm not much of a mechanic. But I'm a handy guy.
I'll keep you guys posted.
Southtown of Buffalo NY!!
Who sells these lights, where can I pick up a Pair?
These have the electronic throttle control [non-permissible content removed]'y, the throttle plate controls the amount of air-only at that point into the intake manifold, and the fuel is directly injected right at each cylinder intake port, well down the path from the throttle plate, I don't really see how fuel quality or anything else would cause a carbon buildup at the throttle plate.
"If so, is it because of bad gas or what else? "
You could have some injector clogging from fuel. Get a 20 oz bottle ( or 2-12 oz bottles) of Chevron Techron Fuel Injector or System Cleaner and run that through it, and try a different brand of gas known to have more than the minimum detergent additives (Chevron, Shell, etc) for a few tanks.
"I'm going to clean the throttle housing. the fuel filter on the Envoy, do you know where it might be?"
Located under the vehicle ahead of the fuel tank, under the L rear seat area. There is a special procedure to do that- search this board for details how to.
"Also, where is the PVC valve?"
There is no PCV "valve" per se in these 4.2s. There is a PCV tube that goes between the intake manifold and the engine block, and another air intake tube that goes from the air resonator to the valve cover, but there is no serviceable PCV valve.
aldan93 I'm planing a trip to Rochester over the holiday. Does the Buffalo snow lake effect get over there to?.... I'm actually working on a project that would have a high speed, car carrying ferry go between Toronto and Rochester but right now the cities are too busy trashing each other.
My point was that if some people were bothered without having side-CURTAIN airbags. It seems to be the new standard in safety, and oddly the GM midsizers don't have them.
Nope, people don't seem to be bothered.
The other day I stopped on an incline with nose down and noticed more severe clunking tban ever before on level ground. Also, on another occaision when I expected some clunking, I pressed the brake harder than what was necessary to keep the vehicle from rolling forward - result- no clunk. Could it be that what we are experiencing is a slight rotation of the rear axle relieving friction somewhere in the drive train? I really would like to understand this, but I will not obsess over it. My Enovy runs too damn good to get overly excited about it at this point.
I will sure be interested in what you hear from your dealer.
On the same visit they failed to repair a problem I have with the Service 4wd warning light on the dash coming on about every other time I drove. When the warning light was on, the indicator light for 2wd, auto 4wd,... was out. Dealer replaced a switch, but problem wasn't fixed.
Have some other problems but will list them on a seperate post to avoid clutter.
-Taillight out.
-Strange "whooshing sound from dash panel when turning ignition on and off. Seems to happen when the gauges are dialing up and down at start and turning off of ignition. When gauges reach their true reading the noise ends.
-Clunking sound when accelerating moderately hard from a stop or cruising.
- Very intermittent problems with the a/c. Happened only twice where a/c would suddenly go out for a day or so, then return to working normally.
Warranty ends soon and hope I won't be in for some serious repair bills in the upcoming year.
Any insight would be appreciated. Have appt with dealer next week.
Since I make the installation myself, the $75+/- spent is worth it to me for the peace of mind.
BTW only once in the 30+ years living in the Phx area has it exceded 120. I think the record was 122 and I couldn't tell the difference between 122 and 115!!
Thanks again, Ed Haywood
“I noticed the Castrol ATF stated "Meets the new anti-shudder performance and sprag gear wear requirements of the DEXRON-III specification"
Do you remotely think that using non conforming oil would seriously impact sprag gear wear so much that the truck would “clunk”?. Maybe not. What are the chances of all the clunkers using crappy oil? (try to be an oil/clunk scientist for a second) I think clunking is more slip yoke related.
Oh yes, I guess I did the conversion wrong (120*f would be 48*c). That’s darn hot! I bet you could fry an egg on the hood of my black truck. Actually I noticed that the Envoy hood insulation works very well. When you get a block of ice or snow on hood in the morning, the engine heat doesn’t dissipate as quickly through the metal and takes longer to melt it than other vehicles. Ah, now there is a bonus feature.
2002 Black LTZ w/31K here and for the most part, minimal problems.
I think my vehicle is quite good looking, that is until I look at the " spackled " area just in front of the rear wheels.
For those that havent noticed, or are lucky enough not to have this problem, take a good look at the area between the rear door and in front of the rear wheels. Does it look like you hit it with a sandblaster? I guess rocks/stones/pebbles/rock salt are in direct line with area, shooting directly off the front tires.
Its my opinion that this is a design defect. Has anyone sucessfully had any type of repair done under warrenty? We shouldn't have to live with this type of problem on a 35K+ vehicle.
Why should I have to go out and buy that 3M clear crap....
Any info is appreiciated
Mike
I'm afraid I must agree with hardhawk and tblazed on this one but, unfortunately, this doesn't help you now. It can't hurt to bounce this off your dealer. Who knows? Maybe they can do something for you. Let us all know what you learn.
Thanks again.
The clamps work fine with the stock crossbars. They have rubber-coated steel bars that sandwich the crossbar.
Dean
G Cherokee....
I just wasnt expecting such an oversight when I was forking over my 33.7K
G Cherokee....
Most other ugly SUV's, that is! It's not an oversight. I hate plastic cladding and imagine plenty of other folks agree. I'd rather just get mud flaps. No Aztec styling for me!
Happy holidays to all!!!!