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Chevy Silverado and GMC Sierra Transmission Problems

503 messages,  Last post on Nov 10, 2009 at 5:28 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Transmission, Truck

#341 of 503 Re: Transmission problem [framemaker] by park079 Sep 24, 2008 (5:49 am)
Replying to: framemaker (Sep 22, 2008 9:24 am) The shifting problem was electrical. The battery had a crack and dripped acid onto the wire harness and as the wire covering desolved and the bare wires crossed the transmission would kick out of gear. When the coating desolved completely and the wires crossed then the truck would not start and the dealer found the problem. New battery, fixed the wiring and all is well. Transmission shifts fine and it appears that the problem was electrical. Hope this helps. Replies to this message: framemaker (Sep 25, 2008 4:12 pm) Whiskeynick (Jan 31, 2009 4:19 pm)
#342 of 503 Re: Transmission problem [park079] by framemaker Sep 25, 2008 (4:12 pm)
Replying to: park079 (Sep 24, 2008 5:49 am) Thank you - I was at dealers today and they found code P0785 in the computer. This code reflects a problem in the 3-2 shift solenoid circuit; most likely the 3-2 solenoid. Replies to this message: Whiskeynick (Jan 31, 2009 4:19 pm)
#343 of 503 Slip Joint Problems by rrossi Sep 29, 2008 (12:16 pm)
I have a 2007 GMC 1500 5.3. When I come to a fairly strong stop and let off the brake a bid, I get this jolt. In addition, If I come to a full stop and let off the brake to begin my roll, I get the same jolt. Several Times I thought some bumped into me from the rear. The first time I took it in to the dealer, they lubed the "slip joint" less than a 1,000 miles later it began happening again. Now they tell me its "normal" Replies to this message: kskeith (Oct 23, 2008 12:30 pm) medic979 (Oct 28, 2008 5:29 pm)
#344 of 503 Re: Loss of power and transmission noise [october2525] by october2525 Oct 01, 2008 (5:17 am)
Replying to: october2525 (Mar 18, 2007 7:00 am) just a repost,still looking for help,,,,,   My 2004 GMC Sierra 2500HD 4 x 4 looses power when my transmission temp gets between 180-200 degrees. It only gets hot on the hot summer days or when I tow my boat. There is also an unusual noise(higher RPM?) in the transmission when I take off after sitting a controlled intersection. I get my vehicle serviced on a regular basis. I have yet to take it into a dealer..any ideas?
#345 of 503 1996 gmc 1500 tranny problems? by larsbars01 Oct 06, 2008 (4:29 pm)
when towing my trailer and heading up a hill my truck lost power and I had to take the offramp and park it after a short rest it was okay for a few hundred more miles-two tranny shops have told me its not the tranny-two diagnose guys say its the tranny-when the gas is open up while going down the road the power does not go to the wheels-you can see the tach go up but the truck does not go accordingly-I don't want to replace a bunch of items and none of them be right-If I drive like a turtle its okay but I need to hook up the trailer and leave where I'm at with this problem solved-HELP
#346 of 503 Transmission possibly slipping by drapheus Oct 16, 2008 (10:51 am)
Hello all,   I have a 1995 Chevy K1500, and I think possibly the transmission is going. It drives fine until about 45-50 mph, and then it starts hesitating the more I press the accelerator -- it feels like the engine is cutting out, but the rpm or even the sound of the engine doesn't change.   I changed the transmission fluid and filter, added some non-slip additive, replaced the fuel filter, redid all the ignition wiring, replaced the rotor and coil + spark plugs, and replaced the oil in the differential, but with no luck. Any help would be much appreciated. Replies to this message: cowboy50 (Dec 12, 2008 9:25 am)
#347 of 503 Re: 2003 Silverado Z-71 Problem [blaroche] by wheelman1952 Oct 17, 2008 (7:21 pm)
Replying to: blaroche (Dec 14, 2006 7:21 pm) what i know about the gm transmissions..if the sun shield cracks or strips.there will be no .2 or 3 gear and no reverse..gm charges around 800 dollars,to take the trans appart and replace with up graded sun shield unit..12 months and labor waranty,nationwide..there was a guy,that was converting 1992 and up chevy caprices..im dc or maryland..i think the chevy impalas..1992 and up,had manual trans in some of them.its just hanging a clutch pedal.check out the impala clubs and forums.
#348 of 503 97 by lambo87 Oct 19, 2008 (5:55 am)
#349 of 503 97 GMC tranmission problems by lambo87 Oct 19, 2008 (6:03 am)
I have a 97 gmc 1500 pickup and when the engine is cold it's fine but when the transmission warms up it shifts very hard from 1st to 2nd gear and also from 2nd to 3rd. I have changed the fluid and filter in the transmission to no avail. Also changed the sensor on the carb. to no avail. The engine light comes on and I replaced parts that it said to replace and the engine light is still on. I have gotten the engine light reset each time that I did something to the transmission and it'll stay clear for a while but later comes right back on. Appreciate any help!!
#350 of 503 99 cehvy transmission problems by supersupras10 Oct 20, 2008 (10:20 am)
ok i have a 1999 chevy silverado 1500 5.3l v8 4x4 ex. cab, and iam having problems with the tranny and sometimes it works good but when it does it fell like it has a shift kit in it and then it quits working and you then you have to shift gears by had and then it fells like you do have first or drive, and also when it does it the truck has no power at all i mean it is very slow but when it works right it dont run bad at all, but i hope someone can help me out to find the problem out

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