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Comments
I am having a bump/jerking issue with my brakes and it feels that the brakes want to let lose when I am at a traffic light. I have contacted my dealer and GM and they have no reported problems with the braking system. just wondering if anyone else is having this problem.
Also, I am having my drivers seat fixed because it has pulled away from the air bag-has anyone else have this problem. I wrote a little thank you note earlier for some of my other problems( like the wondering mirror) and I have contacted GM and they said that they have not been notified of any of these issues y'all have been discussing? so my next question is do you just talk to your service people and NHTSA or do you go through GM? I see y'all are talking to each other( with very knowledgeable info) but no one is really saying what GM has done to help them with their issues.
the only major problem I have had before this braking issue was when I was at a traffic light I would step on the gas and nothing would happen-turned out to be my gas pedal sensor thing-put in a new one and no more hand jesters from the people stuck behind me.(drivers in rush hour can be brutal)
I love my Envoy and I think it is great in the snow no jerking action that you talk about. Also I have owned a Subbie, ford, pontiac, chevy, nissan, and my Envoy is handling better than any of them. I feel safer in my Envoy than the others and that is just one womens view of safety.
thanks for any help you can send my way-going to the dealers next week.
My Envoy has 9k miles and most of these miles are highway miles related to trips to Southern California. I am very happy with the confortable interior and the power this 6-cylinder engine puts out, however I am a bit concern about the 5-in-dash CD/Radio heating problem. The radio gets very hot to the touch on the surface. Although, the radio surface is not hot enough to melt the CD's (since they still play) I don't think this is normal.
Has anyone had this problem? I enjoy driving the envoy and easily can drive 16 hours nonstop (except for stopping to get vehicle fuel and meals). I have turned off the entire stereo system for a while and still feels hot.
Any advice will be appreciated.
I'm thinking of buying a 2003 Trailblazer and would like to hear from anybody who has pros and/or cons about it. Especially wiring/electronic problems. A friend who is a tech for Chevy warned me not to buy it because of the computer/wiring problems. Is this really an issue? He said, however, the engine, transmission, etc. is solid. Any info would be appreciated! Thanks!
I've experienced a couple of the same issues mentioned by other owners on the board, (granted, they've been mostly electrical) but I've always had very painless experiences at the dealer with getting the issues resolved.
I would and have recommended this vehicle to others, and my neighbor just took delivery of a black '03 TB LS, purchased after consulting with me about mine.
I believe that an important key issue to consider is: how good is your chevy dealer's service dept? so that when &/or if you do have maintenance issues, how painful/pleasant an experience will it be?
good luck with whatever you decide on.
Greg
Steve, Host
Being a programmer myself, I'm well aware of such features. I'm sure that I have probably implemented a few "features" of my own over the years.
Also I am getting very little or no heat at he floor. Could someone please give me the TSB so the dealer can fix?
Thanks
Sorry, but the Touareg is a PIG! Car and Drivers weighed way over 5000 lbs, yet was much smaller than a Triplet. Fuel ecomony sucked also. I'd wait a year also, as VW's are not real reliable in their first years.
GAM
The reason I prefer the older system with the viscous system is that it operated under a 35/65 front to rear torque split. A much more effective ratio while encountering wheelspin while rounding a curve. It could also transfer up to 90% of the torque to the front if needed. Overall, it's still one of the best systems out there. Hands down still beats the newer system. Much smoother and continuously variable.
When driving normally, the difference in RPM of the two axles is minimal. If the speed of one set of wheels were to be more than the other, then the difference in speeds of the corresponding disc's in the Viscous Coupling will also increase. In this case the 51 inner discs begin to spin faster than the rest as these are connected to the opposite wheels. This would cause a "cutting" action within the silicone fluid as it is sliced between the slits of the interior discs and the holes of the exterior discs resulting in the silicone fluid heating up instantly. As the temperature increases so does the viscosity or thickness of the fluid. This causes the clutch plates to become increasingly locked together allowing more of the power to be transferred to the opposite axle via the external discs. My guess is the speed of engagement is less noticable due to the method and system. This system is still used by many other manufacturers on their AWD systems. Volvo, 911 S-4's and even GM's own Typhoon and Cyclone used this system too. This transfer of torque all takes place in milliseconds.
The best part of 1996 was the introduction launch of the new redesigned Bravada in that day. Had more ride and drive comparisons that year on all types of set ups in the Detroit Proving grounds just because it was so fun to run in. Actually flipped a 4x4 Explorer that year in a run
I hate to ask, but did the dealer try the obvious like rebalancing the tires and checking the alignment? Whenever I've had vibrations at certain speeds on my other cars those are usually what I have done first.
How deep are the scratches? If they are just in the clearcoat you might be able to use some car polish and buff them out. If they are down through the paint or primer you might need a professional touch-up.
"Look at this info:
"2002 Trailblazer, Envoy, Bravada (GMT 360/370) S, T 2002 Equipped with the 4.2 L LL8 Engine Knock Noise During Intial Start-Up in Cold Ambients [10°C (50°F)] That Typically Quiets Down as the Engine Warms Up
Some customers may comment about an engine knock noise that begins to occur within the first several thousand miles of use. This noise is most often noticed during initial start-up in cold ambients [10°C (50°F)] and typically quiets down as the engine warms up. This noise is more noticeable at 800-1100 RPM and/or 1700-2100 RPM. GM Powertrain engineering has determined that this cold engine knock noise is the result of an interaction between the engine piston and the cylinder wall. GM Powertrain engineering has also determined that this condition is not detrimental to the performance, reliability or durability of the engine. Realizing that this noise could be a customer satisfication concern, GM Powertrain has implemented a graphal coated piston for this application to address this noise. These new pistons have been in production since January 10, 2002 and will be available in service by June 1st, 2002. The part numbers for this piston is 88958991 for standard and 88958992 for 0.25 mm (0.0098 in) oversize.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms." "
Steve, Host
I got to the point where I just gave up. It also seems to be worse in the winter time.
I just took my car to a new dealer to have some other things fixed, and he said that the rear coil springs were the problem. They had to order them. Should know in a week or two if that was it. I seriously doubt it. Anybody else have the vibration and get the problem solved?
I also had the floor heat problem. When I took it in they fixed it using the new redesigned ducts. It definitely worked. I now feel heat on my feet! The only thing, I think the cabin area of the car now feels cooler - uugh!
Additionally, I had the passenger mirror go and start to wander. The driver side I had fixed last year, now this one.
I've also noticed that after 12 months of ownership, it seems the wandering mirror problem has hit my car.
Can these be related?
This vibration is in the Drive-Train! When you press the gas or have your foot on the pedal it vibrates 40-65mph, it almost gives you a pulsing sensation that kind of gives you head ache!!!
But if you let go of the gas it stops. So drive, shaft? Yoke? Transmission? Torque Converter?, bad gear set? already replaced the springs! And there was a service bulletin on that?
What kind of plane do you fly?
Now for the good news! As soon as I got home, I jumped in my wife’s 2002 Jeep Liberty, pulled the 4wd lever and went for a ride. The 4wd worked flawlessly as it tracked through the snow with ease. My wife sat quietly next to me with a big smile on her face. I am thinking my next vehicle will be a Jeep Grand Cherokee.
By the way Chevrolet, I am also going to post this on the jeep forum as well. It is time for you to start taking ownership of these problems and get them fixed. If you knew about a faulty switch, why wasn’t there a recall? This is a safety issue.
"I also noticed last Friday that the 4wd selector switch light stopped working on my 2002 Chevy Trailblazer LTZ. I didn't think too much about it"
You didn't think too much about it? Why not? That would raise a red flag with me. If the light went out I would assume no power was getting to it, and taken it in immediately. Hmmm...
BTW - I believe there is a TSB for your problem. It's not actually a "safety" issue. 4WD is a convenience option, unlike brakes, or steering. Good luck with your Jeep. They're not perfect either.
I thought it was just a burnt out bulb. I was going to take it in to have it checked out next week.
Frank
This may get 4x4 back temporarily if your really stuck.
Try taking out the fuse marked "ATC" in the
fuse block in the engine compartment while the engine is off, wait a few minutes then put it back in. See if light comes back on. If this does work you still have to make a service appointment and have some reprogramming done as this is only a temporary fix.
For people that live in the snowbelt or the mountains, 4wd is often a whole lot more than a convenience option. Unless of course you think that parking on the side of the road to wait for the plow/sand truck is a valuable use of your time.
Thanks
Steven
Like I've said before, this was the first time I felt it, and when not pulling a load I don't feel it. It drives great at a sustained 70 mph, but in overdrive the engine is only taching around 2000 RPM.
So, perhaps the vibration is related to engine speed and/or load. During normal driving I rarely stay at 2600+ RPM very long since it cruises at around 2000, but I'll try driving at 2600 rpm in the next lower gear and see if I experience it there. I'll let someone else try 2600+ in overdrive since I don't need the ticket.
Bob K
I don't think (IMO) it is necessary to go in for service since they most likely will not be able to duplicate the condition. Even if they can duplicate the condition, will they be able to fix it? I don't think so.
At least now you know that overdrive is not for pulling 2500 lbs. up a hill.
Frank
However, recently I have noticed the driver side mirror shaking while driving around 70mph with a strong side wind. It just kinda quivers, distorting the image. There is about 1/8" to 1/4" of movement overall. I checked the mirror when I stopped and it seems to be secure. At first I was concerned that it might be ready to fall off!
I'm not sure if this is related, but just the other day I was walking out to the truck and pressed the unlock on the remote. My mirrors did their little auto-adjustment, but this time the driver mirror tilted all the way up and started clicking when it hit the hard stop, as if the sensor did not tell it that it had hit the end and so it kept trying to move. I got it to stop by pressing the bottom of the mirror with my hand, manually moving it down. I then had to manually adjust the mirror with the joystick. This now happens everytime I unlock the truck.
Has anyone had anything like this happen to them?
As a side note, I also noticed that while driving with that strong side wind, the door seal would intermittently give, causing a loud rushing of air. This only happened with the worst gusts. Kinda blew the truck around quite a bit too!
My drivers mirror also had the shakes but it was at all speeds. I could also hear a spring type noise when going over bumps and the same noise when I closed the drivers door.
In my case we determined that it was the spring in the mirror assembly itself must have loosened up, which BTW cannot be serviced. The complete mirror assembly was changed under warranty.
You may have the same problem or your mirror actuator may be loose you didn't specify if it was the glass moving or the complete mirror head moving 1/8" to 1/4".
Make a service appointment.
As far as the tilting problem does it happen with both remotes
(1 and 2) also did you try to reset the memory.
Thanks.
I have not tried driver #2 yet.
I did try to reprogram it, but it still screws up.
off to the dealer... I wish the warrantee would reset for each thing they have to replace...