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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Transmission Problems
503 messages, Last post on Nov 10, 2009 at 5:28 PM
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I have a 1993 Silverado. It shifts hard from 1st to 2nd then it won't shift into 3rd it is like it is in neutral. We have replaced the 2 soilinoids in it but it still isn't working right. We were told that it could be the speed sensor but haven't tried it yet. Does anyone know if it would be the speed sensor or what else it could be.
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Replying to: katyc6 (Oct 24, 2009 10:49 am) I know of several people who own a Silverado with this same problem, but it seems the correct answer for each problem is not easy. Most all newer transmissions are now electronically controlled and there seems to be several issues that relate to this hard shifting from 1st to 2nd. What may be the answer for one "hard shifting" problem may not necessarily be the correct answer for another, so it seems. I'm not a transmission specialist, but it seems reasonable to conclude that heat will destroy an automatic transmission quicker than anything. Towing heavy loads produce lots of heat. Dirty fluid will produce excessive wear and tear, and ultimate failure of mechanical parts. It's just common sense. Keep the transmission cool as possible, keep the fluids clean as possible and it will likely last longer ... but things can go wrong also with the various mechanical and electronic components that must ALL be working properly in order to render proper operation of the transmission. I realize this may not be much help in your specific problem, but I thought I would mention this information since it is the same problem you are experiencing. There are many fantastic guys here that can shed more light on this subject, so a little patience and maybe we will both learn some interesting facts in the days ahead. Keep us posted on your findings and I'll do the same. Best ... |
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| 2002 2500hd with durmax and allison transmission. when shift park to drive indecator light doesn't light up. will move and reverse is fine but no light or in neutral. fluid is clean and full when cold all works fine but when warm it acts up and service engine soon light stays on. any ideas? | |
| My boyfriend has a 2002 Sierra automatic that will suddenly rev up, raising the tach, but not increase the speed. It would be as if, with a manual tranny, the clutch and accelerator are depressed at the same time. He'll shift to 3rd and it will seem to stop, but it has done it in 3rd gear too. It's been happening for a few years, mostly on the highway at faster speeds, but now it's started doing it at city speeds (25/30 mph). He took it in yesterday and they changed a recalled speed sensor (which he thought might be the problem), and they changed the tranny fluid. Within an hour of getting it back yesterday, it did it again a few times. About a year ago he took it to a tranny specialist and they couldn't find anything wrong with it. | |
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