Six problems related to transmission noise have been reported for the 2002 GMC Envoy. The most recently reported issues are listed below.
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.
: 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.
Driving down a 4 lane interstate at 65 with cruise on, the transmission starts to wine and loses acceleration. Moved over to slow lane proceeded to get the next 35 miles home in 3rd gear (noise was make in "d"). Upon arrival home-found out that the Envoy no longer has reverse. Dealer believes there is a problem with the "sun plate" in the transmission. This Envoy only has 48,300 miles. Dealer believes this is the problem because he has seen this before and knows there is a problem. Why is there not a recall on this part or problem?? this should not be happening with any vehicle that has such low miles.
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.
While cruising at highway speed (65 mph) my 2002 GMC Envoy suddenly made a loud crunching noise and lost forward motion. The engine revved up, then down, then turned off (while multiple dash warning lights came on simultaneously). I managed to get the vehicle off the road without the help of power steering or brakes, and after a few minutes I started it back up and found I could drive off only at low speed on the shoulder, though there was continued noise from the underside of the car and it was erratically performing. I immediately brought the car to a mechanic who discovered that internal parts in the transmission had failed. The mechanic also informed me that there is a GMC technical service bulletin about this and it is a common/frequent problem. The TSB recommends replacing the internal transmission parts. The mechanic says that replacing the transmission is the only safe thing to do. The local GMC dealer service department says that despite this being a known issue with these transmissions, if you are out of warranty (I am) GMC will not address the issue. Catastrophic transmission failure is bad anywhere, but on the interstate can be deadly. If anyone had been following me more closely we would have certainly caused a pile-up.
Engine stalls for no apparent reason. I have contacted dealership and they can find nothing wrong. I advised them of a recall regarding the fuel system that may affected the problem. Says they replaced the fuel filter. The first time I took it in, they said that it was the ignition switch. Also transmission makes a very loud noise when attempting to take off at times. It sounds like an engine fan that will not go off. There is a major lost of power when this problem is occuring. I bought this car as a program car, with @ 11, 000 miles on it already. I've had problems with it from day one. I have only had it a few months. I am extremely irritated with this engine problem. This is extremely unsafe. Dt.