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GMC defective transmissions
please see the documents refering to the transmissions in gmc vehicles. We had the same problem with our 1996 gmc sierra. First the rear-end completely shifted and my husband had to realign then it started shifting hard from 1st to 2nd and making grinding noises, it would sometimes refuse to go into gear.
The truck left him stranded with our 2 year old son when it was 20 degrees outside. It is costing us 1300.00 to have the tranny rebuilt. The repairman said that he cannot promise that we will not have more problems beacuse they are not sure waht the actual cause is.
You know you have a lemon when the transmisson repairman tells you to get it to the dealer anyway possible and trade it in. He says he has seen way too many like this. the actual transmission model is 4l60E.
THANK YOU
Anitra Purser
8 Updates & Rebuttals
Fred
San Jose,California,
U.S.A.
How long has GM been making transmissions?????
#9Consumer Comment
Mon, February 28, 2005
My son's 02 Sierra with approx. 36K with a tranny service at 30K decided to implode. Does not say much for GM products after all GM has been making transmissions for what?? 80 yrs??? and they still cannot get it right!! No GM ever for the old man !!!!!
Fred
San Jose,California,
U.S.A.
How long has GM been making transmissions?????
#9Consumer Comment
Mon, February 28, 2005
My son's 02 Sierra with approx. 36K with a tranny service at 30K decided to implode. Does not say much for GM products after all GM has been making transmissions for what?? 80 yrs??? and they still cannot get it right!! No GM ever for the old man !!!!!
Mitch
Yarmouth,Nova Scotia,
Canada
Hard Shift Cure same problem as you describe
#9Consumer Suggestion
Mon, November 01, 2004
Scott
I had the same problem as you describe on my 2002 Chev 1/2 4X4.
The problem was the alternator. Apparently there is some interference from it causing the pressure regulator in the teansmission to go into a fit at certain charge positions.
The cure is to add a wire and a connector on the alternator.
There is a service bulletin to cover the repair and if i recall requires .7 hours to comnplete.
Mine works fine now.
Eric
Troy,New York,
U.S.A.
4L60E tranny history of shift problems
#9Consumer Suggestion
Sat, October 02, 2004
I know just what you are going through. You are not alone as I have been polled by MANY truck owners, when they see mine, and asked what I have to say. The common link is this trans shift clunk and erratic hard shift. None of these owners are happy at all. GM is aware of it too, service bulletin # 01-07-30-042B
dated JAN 04
A/T - 4L60-E/4L65-E," 2-3/3-2 Shift Clunk Explanation "
Among other bulletins released to hide the true nature of the clunk from the consumer ie; rear end , start stop driveline noise from gear lash, drive shaft noise, among others which were actually trans noises but the unwitting owner simply isn't knowlegable enough to deny or contest.
I have a 2003 truck with that same trans. It self destructed at 3000 miles and was never repaired properly. I now see why, it can't be. I was told by the dealer "it's a truck, not a car and if they make noise too bad they aren't made to be used like a car" That was testimony in a lemon law mediation suit !
Your best bet, never buy another GM vehicle. Their record of dealing with consumers shows just what you mean to them, considering the length of time this trans has been in use and the number of complaints about it.
Scott
Warner Robins,Georgia,
Hard-Shifting Trans.
#9Consumer Comment
Mon, April 22, 2002
My problem may be of the same nature. I have a 1997 Chevrolet Silverado and it is shifting hard, mainly between 1st and 2nd, but it can be felt between 2nd and 3rd. The problem doesn't happen all the time, it takes appox. 45 minutes to an hour of driving before it starts doing this. If I shut off the truck and let it sit for 10 seconds, then restart it, the problem goes away for another 30-45 minutes of driving. I've already taken it to a "Professional" transmission shop and they told me that it needed to be re-built, $1600 dollars later, and it's still doing the same thing. I've taken it back to them multiple times and they can't find anything wrong with it. I have even purposely drove it for over and hour and made it start shifting hard, before I took it too them. I then had a technician get in with me so that he could feel it. However, the first thing that they did was drive it onto the rack and turn it off, which of course reset it. Then they call me and told me that they fixed it, which of course they didn't.
Scott
Warner Robins,Georgia,
Hard-Shifting Trans.
#9Consumer Comment
Mon, April 22, 2002
My problem may be of the same nature. I have a 1997 Chevrolet Silverado and it is shifting hard, mainly between 1st and 2nd, but it can be felt between 2nd and 3rd. The problem doesn't happen all the time, it takes appox. 45 minutes to an hour of driving before it starts doing this. If I shut off the truck and let it sit for 10 seconds, then restart it, the problem goes away for another 30-45 minutes of driving. I've already taken it to a "Professional" transmission shop and they told me that it needed to be re-built, $1600 dollars later, and it's still doing the same thing. I've taken it back to them multiple times and they can't find anything wrong with it. I have even purposely drove it for over and hour and made it start shifting hard, before I took it too them. I then had a technician get in with me so that he could feel it. However, the first thing that they did was drive it onto the rack and turn it off, which of course reset it. Then they call me and told me that they fixed it, which of course they didn't.
Scott
Warner Robins,Georgia,
Hard-Shifting Trans.
#9Consumer Comment
Mon, April 22, 2002
My problem may be of the same nature. I have a 1997 Chevrolet Silverado and it is shifting hard, mainly between 1st and 2nd, but it can be felt between 2nd and 3rd. The problem doesn't happen all the time, it takes appox. 45 minutes to an hour of driving before it starts doing this. If I shut off the truck and let it sit for 10 seconds, then restart it, the problem goes away for another 30-45 minutes of driving. I've already taken it to a "Professional" transmission shop and they told me that it needed to be re-built, $1600 dollars later, and it's still doing the same thing. I've taken it back to them multiple times and they can't find anything wrong with it. I have even purposely drove it for over and hour and made it start shifting hard, before I took it too them. I then had a technician get in with me so that he could feel it. However, the first thing that they did was drive it onto the rack and turn it off, which of course reset it. Then they call me and told me that they fixed it, which of course they didn't.
Scott
Warner Robins,Georgia,
Hard-Shifting Trans.
#9Consumer Comment
Mon, April 22, 2002
My problem may be of the same nature. I have a 1997 Chevrolet Silverado and it is shifting hard, mainly between 1st and 2nd, but it can be felt between 2nd and 3rd. The problem doesn't happen all the time, it takes appox. 45 minutes to an hour of driving before it starts doing this. If I shut off the truck and let it sit for 10 seconds, then restart it, the problem goes away for another 30-45 minutes of driving. I've already taken it to a "Professional" transmission shop and they told me that it needed to be re-built, $1600 dollars later, and it's still doing the same thing. I've taken it back to them multiple times and they can't find anything wrong with it. I have even purposely drove it for over and hour and made it start shifting hard, before I took it too them. I then had a technician get in with me so that he could feel it. However, the first thing that they did was drive it onto the rack and turn it off, which of course reset it. Then they call me and told me that they fixed it, which of course they didn't.