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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Transmission Problems
336 messages, Last post on Aug 24, 2008 at 2:17 PM
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| Transmission jumps out of all forward gears, have not tried reverse. If motor is turned off, truck will not start; there is no power to anything. Battery has a full charge. Truck will start with a booster but transmission continues to jump out of gear. Does this sound like a Throddle Positioning Sensor or something else? What about the motor not starting; is this related to the transmission problems? | |
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Hello, I just purchased a non-operational 1994 Chevy Silverado with an automatic transmission. I purchased this vehicle to learn about automobiles and will be attending a Intro to Automotives course at a local community college in the fall. But anyway, when I put the truck into drive and hit 10 mph or more, I hear a rattle (sounds like a loose bolt in a pan, between the transmission and rear axle. As I slow down it quiets the problem. I'm thinking about taking it to the local AAMCO station for a transmission test. Does anyone have any other suggestions. Thx
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Replying to: a760chevy (Jul 26, 2008 9:26 pm) |
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Hello, thanks for reading this! I have a 1996 Z-71, I think the transmission is a L-60. My original just quit shifting from 2nd to 3rd, so I had it rebuilt. The rebuild lasted 15,000 miles, started doing the same thing again. I had a different rebuilt one installed, by a different man, and it did the same thing after maybe, 500 miles. Now I have had my original one rebuilt again, same guy that has installed the different rebuilt, and he is ready to install it tomorrow. August 17, 2008. Now my question!!! Is it possible that there is something in the electronics of the truck, that isn't actually in the transmission, that is causing it to stop shifting? OR is it definately, maybe some kind of controller that is in the transmission? And how can I find out? Or is it most likely that it is something to do with the rebuilder? I don't want this rebuild that is to be installed tomorrow, to do the same thing. I need to know if I need to be checking something besides just what is in the transmission. And, besides, I don't know how, and probably neither does that transmission man, how to check any of the electronic parts in the transmission, or in the truck itself. It's almost midnight, saturday, and Im beat. I hope this letter can be understood, and hope some kind person can give me some advice on this problem. I surely don't want this man to have to rebuild it a third time. Especially if it is something in the truck, and not some kind of controller on the transmission. Heck, I don't know. Please help!!!! 'thanks a million! Billy |
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Replying to: dmbills (Jul 18, 2008 4:42 pm) thanks billy |
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I have a 2007 Silverado and have had problems with the transmission since approx. 900 miles. It started with a grinding noise being made when shifting to 2-3 gears. The first repair made was replacing the 3-4th plates & piston, low roller clutch, reaction carrier, and internal gear. I started having problems again round 2300 miles. They then had to replace the housing, oil ring, valves, and gaskets to repair it. I was already upset because I wanted a new transmission the first time I had issues and the dealer said GM refused. Gotta love GM... Not... It was fine for a while and it started to have problems again but the dealer has said not to bring it back till it dies. I have close to 20,000 miles on it and it still is doing the same thing, goes into 3rd hard when shifting or slips into 3rd when shifting. It is frustrating and I am attempting to find someone to replace it regardless. Has anyone else had any of these issues?
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Replying to: frock10 (Aug 17, 2008 8:23 am)
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Good day for all! My truck chevy silverado 2500 04 with duramax and allison transmission has shifting problems, when i driving at normal acccelleration the truck shifts fine but when i try to accellerate quickly it wont shift untill i back off the throttle! Before than check engine also lightning and when i try pull up from drive to neitral or parking at rear of the car i hearing "boom" and car shake. P.S. I changed fuel filter today but itt give no more. |
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Replying to: obyone (Aug 17, 2008 3:37 pm) |
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| My 2006 gmc 1500 with 5.3 v8 4x4 and automatic trans gives a thump when shifting at low speed the shift is at around 15mph.when in traffic or driving in a development. It only happens when you creep up on the shift speed. If you can go a little faster it shifts through smoothly. the truck only has 10000 miles on it. i had a 2004 envoy wjith a 6 and never noticed this. Any advice thanks. | |
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