2002 GMC Envoy: complete transmission failure

Filed Jan 10, 2020 · Driver assistance, Electrical · 140,000 miles · IL

Severe electrical problems in vehicle,everything stopped working on it!!!! Vehicle shut down in a middle of a busy intersection, I replaced transmission 2 times as well!!!!had no lights,turning signals,no heat heat then the vehicle just stopped completely nothing just dead!!! Had battery checked wasnt that!!!! They told me electrical issues not sure what only had vehicle 3 months!!! I had had 2004 trailer blazer before this same issues!!!! Only had it 2 months and transmission went out pd that then once again electrical problems!!!!!

Filed Sep 5, 2009 · Transmission · 153,000 miles · NY · fire

I have a 2002 gmc envoy which has a destroyed transmission due to the well known (but unbeknownst to me) failure of the transmission cooling lines. This is a clear design flaw, as the routing is close to the catalyst. Besides the obvious safety concerns of an on the road transmission failure, the location makes a fire likely. The design flaw is documented in tsb pt-4722. I believe these vehicles should be recalled.

Filed Dec 9, 2008 · Transmission · 65,000 miles · OH

After pulling away from a stop light at a normal pace and reaching a speed of almost 50mph there was a loud clunk and a rrrrr sound coming from under the vehicle. The vehicle began to slow as the RPM's went up, all forward drive was gone. We almost got rearended... There was no warning at all that there was a problem or was going to be a problem ,it just broke..dealer says need new transmission.. Apparently gm has a sun gear issue with this type of transmission..

Filed Mar 12, 2008 · Transmission · 56,770 miles · TX

56,779 mile and transmission failed on my 2002 envoy. Dealer told me they had never saw this happen. We had just made a 2300 mile trip to the 'no man land' of colorado. The next day my wife came to a stop sign, said the car made a weird noise and would not go. No reverse or drive but crippled it home in low. Was very surprised that the gm dealer would not back the transmission. $2,903.94 to replace with a 1 year guarantee which is about up and I refuse to drive on a long trip again in this auto.

Filed Jan 16, 2008 · Transmission · 61,275 miles · CO

Transmission failure at 60,000 miles due to defective parts installed during the original manufacturing process.

Filed Oct 26, 2006 · Transmission · 68,187 miles · MD

Dt*: the contact stated while traveling 25 MPH, the vehicle lunged, a whirring noise occurred, and the vehicle would not accelerate. It was driven home with high RPM's and low acceleration. At the contact's residence, it was noticed that reverse did not operate. The vehicle was driven to the dealership, but would not operate above first or second gear. The dealership determined the sun shell inside the transmission failed and the transmission needed to be rebuilt.

Filed Jul 31, 2006 · Transmission · MI

I own a 2002 gmc envoy with 49,000 miles. The transmission failed, did not want to shift from first, then no reverse when I left the destination. Had towed to dealer. Service manager stated she had a hunch what it was but had to get it in the shop first. Sure enough, the sun shell failed and the transmission has to be replaced. Called gm customer service in an attempt to get them to fix it at there expense since this is an regular occurrence with there trucks. Have not heard back as of yet. Seen many many many posts around the internet about this very problem. This should be looked into.

Filed Jun 18, 2006 · Transmission · 32,000 miles · CT

Have a 2002 gmc envoy, bought new. 8 recalls, ball joint and speaker failures. At 32000. Miles, the transmission failed. Dealer diagnosed with sun-shell gear problem, that was addressed by a gm repair bulletin. At 37000. Transmission failed again. Dealer advised the entire transmission needed replacement, but it was not related to his oct. 05 repair. Contacted gm customer service, have a file number, but have not heard from anyone in 2 weeks. They advise that the gm area representative has not called anyone back, either the dealer or gm cs. ?? Asked to contact him myself and was told I could not do that. Asked where I could contact ceo rick wagoner and was told that no one can give out that info. A bunker in colarado maybe?

Filed Dec 5, 2005 · Transmission · 65,000 miles · CA

We own a 2002 gmc envoy sle, which was purchased new december 2001 by us. In september 2004 at approximately 65,000 miles the transmission went out. My wife was driving the vehicle at the time. The envoy has a automatic transmission and 2nd gear and reverse went out. My wife was able to pull over and we took it to the gm dealership where we purchased it. They would only pay 50% for the repair to the transmission and we had to pay the other 50%. Less than 25,000 the transmission has went out again, having the exact same problem 2nd gear and reverse went out. Again, my wife was on her way to work and was able to control the vehicle and safely get it stopped. We took the vehicle back to the gm dealership and they are now willing to replace the transmission, however we have to pay 50% of that amount. My question is why was it not replaced the first time? I paid approximately $576.00 for the first repair and now they want me to pay another $1500.00, which is over $2,000.00. Why is another repair now not good enough to fix the problem? Why should we have to pay for a defective transmission? I have been doing some research on the internet and have found at least 119 complaints for the exact same problem as we are having, with gm settling with others on a 50/50 basis. I am just thankful that both times my wife was uninjured and I believe strongly that someone really needs to investigate this problem. Any assistance you might be willing to provide us would be most appreciated.

Filed Aug 12, 2005 · Transmission · 29,415 miles · NY

Dt: contact stated transmission went out at around 29,415 miles. Transmission failed while driving at 20 MPH, and leaving him stranded. Transmission has been repaired. The service dealer replace the sun gear, and stated this was a known problem within the gmc envoy. *ak

Filed Aug 12, 2005 · Transmission · 68,920 miles · OH

I own a 2002 gmc envoy that I purchased new in february 2002. On 24 may 2005, the transmission failed with 68,920 miles on the odometer. There was no reverse or drive. The vehicle operated marginally in gears 3,2,and 1---enough to limp into the dealer. Luckily, it didn't fail on the highway...or I might not be here writing this complaint! After tearing down/checking out the transmission, the technician found a damaged sun reaction shell and sun gear. The parts were replaced, along with new gaskets and seals, the transmission cleaned and power flushed. The total cost of this effort was $2277. :-( :-( in doing a bit of research on this particular failure, I've discovered other gmc envoy, oldsmobile bravada, and trail blazer owners have been victims too. According to one of them, who works in the service department of a gm dealer, the repair instructions state the material used in the sun shell of the 02 blazer, envoy, and olds bravada wasn't able to withstand the heat in the transmission, causing it to strip (which is exactly what happened in my vehicle). He goes on to state. That in vehicles from 2003 on, gm used a "more heat resistant material" in the transmission that reduces the likelihood of the sun gear failure. I'm writing this complaint because I believe the root cause of my transmission failure...and those experienced by other owners... Was due to faulty material...which the manufacturer knew about...yet didn't inform the consumer about. I've never owned a vehicle, gm or otherwise, where the transmission failed at a young 68,000 miles! Help please!

Filed Jul 13, 2005 · Transmission · 44,894 miles · IA

Backing up my driveway and heard a "clunk" followed by a high pitched whining noise. Following this, I had no reverse and the transmission failed.