Automatic Transmission problems of the 2002 GMC Envoy

I just experienced a safety defect that could have had very serious consequences. It involves the failure of the shift cable attachment to the transmission mounted shift lever. You unknowingly loose the ability to place the transmission into the "park" position, with the resulting vehicle movement of an apparently parked vehicle. Please contact me ASAP. -- thanks.

Transmission cooler line leak from corrosion on 2002 GMC Envoy. Had to do splice of corroded section and replaced with copper coupling.

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. .

The transmission would "clunk" upon starting and stopping. One day while driving there was a bang and then the gears would not shift from 1st to 2nd without revving the engine very high and then letting off the gas. The next morning there was no reverse. The dealer said it was the reverse sunshell gear that broke. It was replaced.

Normal driving conditions. Exiting from parking lot, heard loud bang, car jerked, came to a complete stop. Limped car home(1/2 mile). Upon further inspection 2002 GMC Envoy had no reverse gear. Researching online shows 4l60e transmission, reaction sunshell & reaction sungears prematurely fail due to substandard parts.

2002 GMC Envoy slt 60k. . . Went outside to start car and had a loud swishing sound. . . Tried to put in reverse. . . Would not go. . . Had to push out to get to work. . . Extremely high rpms (3500-4500) to get through first. . . It also is jumping gears. . . If you try to go over 50 mph the car will redline. . . Was told reverse reaction shell/sun shell gear. . . They had a bunch of names for it. . . Was defective and failed. . . We never towed w/ this vehicle, never got stuck (the gm service pro stated that this was possibly the reason for failure). . . The vehicle is maybe driven 10k miles a year. . . We have had nothing but problems w/ this thing. . . We already have replaced the clutch fan last year. . . And had numerous little problems since. . . All the posts I have read clearly shows there needs to be a recall. . . The prices I have seen on posts is ridiculous to repair the transmission. . . $2k to $3k. . . So for now it is sitting in my driveway. . . I will get the quote this week from my mechanic and am not looking forward to it.

Manufacture knew of inferior components within my vehicles transmission and did not issue a recall. Existing service bulletin #00-07-30-022c dated Dec 10, 2004 (within my warranty period) indicates same issue I experienced in my vehicle on 10/23/2007. Bulletin title states replace reaction sun shell with more robust heat treated parts". This was known while my vehicle was still under warranty. Failure happened after standard warranty expired.

Transmission sun gear failure on my 2002 GMC Envoy at 56,000 k. Gm is only picking up 50% of the $1747. 00 bill.

Sun shell replacement on 2002 Envoy xl. We had the same problem with this defective component. I worked for gm and had no problems having this defective component replaced at 100% dealer charge. We paid $0. 000 (nothing) gm knew they had problems and didn't' correct the problem. Ours failed 20 minutes after having a transmission flush/service with only 35k miles on our 2002 vehicle. I would fight with the dealer. There are service bulletins out there regarding the failure and replacement of this component. Ours failed when my spouse tried to engage the gear into reverse. Good thing this didn't' happen in an emergency situation where she needed to get out of a bad situation quickly. The local dealer paid for our this should be the same for all dealers across the nation as long as it's an apple to apple comparison. Owners in one state should be afforded the same replacement policy and pricing as owners in other states. The manufacturer and dealers should treat everyone fairly.

Went to back out of neighbor's driveway & there was no reverse gear; just like it was in neutral. After pushing the GMC Envoy out of driveway, it would go forward, but was very "strained" to get into gear. I am the owner of his Envoy since it was new; it has only highway miles; has always been serviced by the dealer from which it was purchased.

: the contact stated while driving 10 mph, the sun shell gear fractured inside the transmission suddenly, causing the transmission to lose reverse, second and fourth gears. The vehicle was able to be driven to the dealership. Repairs have been made to the vehicle.

In 10 days, had the transmission go out ($3200), exhaust manifold gaskets start leaking ($400), 4wd switch ($250), automatic transmission park lock in steering column ($250) and now I have a 4wd service light on. The dealer has been totally unhelpful. Although I am an engineer at a tier 1 u. S. Auto supplier, I will be looking overseas for my next car.

My 2002 GMC Envoy seemed to be running fine. One day on the way home, I heard a loud bang and my rpm's seemed to go up. It almost made me swerve into oncoming traffic due to the distraction. When I got to where I was going, I found out that I had no reverse, and it shifted extremely hard between 1st and 2nd gear. Dealer told me they never heard of it, but it needed a sun gear, approximately $2,000 to fix. I opted for the new tranny for $3,200.

I own a 2002 GMC Envoy with 70,000 miles on it. Went to drive to the store and the truck would not move. There is a wining/ spinning sound coming from the transmission. Reverse works, but all others do not. I have read quite a few forums on this topic and found this problem happens often. Please let me know want I could do about this.

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.

While taking off from a complete stop, the transmission lunged and suddenly I had no drive or third gear. I was able to coast to the side of the road put the truck in park but the gear would not re-engage. The truck was turned off and cranked again, still no difference. However, I did have second and first gear. While driving in second gear at a very low speed the vehicle was transported to dealership. Service personnel advised the transmission was gone and would cost $3400. 00 to replace. He stated the gears were broken off inside the transmission and the oil was burnt. He advised the vehicle only has 36,000 miles / 3 years warranty on the power train - transmission, which ever came first. I have less than 74,000 miles on my truck.

While driving the vehicle, I stepped on the gas and it only increased the rpm and did not provide any acceleration while chaging lanes. It then later kicked in and I got acceleration. When I parked the vehicle to see check things out, I was unable to use reverse to get out of the parking space, reverse no longer worked. After the incident occured, I checked out owner forums online to find that many owners have had similar problems.

Drove vehicle as normal without warning and after I stopped (shutdown the vehicle and restarted it) there was no reverse gear or forward gear. Vehicle was towed to the dealer where I was later told that the reverse gear had blown apart. Damaged parts were replaced and transmission was flushed and refilled. I'm concerned now because the vehicle is out of warranty and it is sluggish or slipping when it makes a 1st to 2nd shift. Will it require additional transmission work in the near future and huge $$ to repair?.

I have had multiple electrical and transmission problems with my 2002 GMC Envoy. Yesterday my family and I were driving on interstate 80, while on cruise control, the SUV shut off. I barely was able to get to the side of the road. I almost hit a vehicle getting off the highway since I lost power steering. After 15 minutes of not starting, it finally started. I took the vehicle to the dealership and they couldnt find anything. I have written many letters and tried to convince GMC that this SUV is not safe.

My 2002 Envoy exhibits the same symptoms as my previous GMC jimmy. It has a hesitation on acceleration that fails to shift from 1-2 properly. This only occurs when the car is cold and only for a mile or two. However , it causes severe loss of power and acceleration capability. Obviously other people have this problem but it does not appear that there is a solution. It always works by the time it gets to the dealer, of course.

Complaint is for 2002 GMC Envoy. On three occasions, this truck stalled out while in motion, the last time at 55 mph on an interstate highway. On three occasions, the transmission in this vehicle switched, of its own accord, from 2 wd to 4 wd (low) nearly casusing accidents on two occasions. I listed the most recent occurrences of these problems below.

Transmission does not work properly. Have had it repaired twice, but still vibrates, and fails to move vehicle forward at times, from a dead stop. Is very dangerous at intersections where moving quickly is imperative. Also wiring problems which operate various remote instruments (mirrors, seats, etc. ) fear of fire. Rear door latch was replaced - clicks "locked/unlocked" while driving. Seats move on their own while driving.

Transmission on cold start stays in first gear. Left rear brake appear to have hung up and is burning. Dt.

All these problems come and go, somtimes depending on the outside temperature. Some of it got fixed and came back again. The major problems are that the vehicle shuts down without any warning - no engine no electric nothing-, so its even not possible to call on star! the other thing is that the transmission start to shift gears while driving on a leveled raod at consistant speed. All this items got fixed and come back after a while. Dt.

Consumer was unable to shift the gear from park to drive.