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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Transmission Problems
506 messages, Last post on Dec 01, 2009 at 1:57 PM
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| I own an 03 Chev Silverado 2500HD Duramax w/ an Allison transmission. My problem started not long ago as a hard shift between 2nd and 3rd. I decided to change the fluid, filter, and give it a trany flush. Since then the truck has gone into limp mode twice at highway speeds, not good. It does this when everything is good and warm, when the trany is cold everything works properly. I would really like to get an idea of possible solutions. If they don't involve doing a rebuild on the trany I would like to do the work my self. | |
| I have a 96 step side silver. with the 4L60E tranny. Well I want to get away from that tranny cause it is such an odd ball . I know it is the electronic tranny . But is there ANY WAY to go with a different tranny ? all I do is HWY driving . no pulling and such . O YEAH the tranny in the truck now is shot . | |
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After a recent snow storm, rare for this area, I ran into a problem with my 2001 2500hd with the Allison transmission. It locked up in 2nd gear and I lost indication of selected gear on the panel. After it was left in the garage overnight it returned to normal but the lockup happened again a couple of times. DTC code of 0708/0709 "range selector problems. Loss of indication became worse. After digging around on many forums and into the GM service bulletins I found something really interesting which ultimately solved my problem. There is evidently, a bit of a design problem in that when you turn left any water or snow gets sprayed up directly on to the park/neutral/ backup switch, which is also the range selector switch. If the selector shaft o ring is worn or cut, water penetrates the switch and the problem begins. I changed the switch and everything back to normal. Out of curiosity I drilled out the rivets and opened up the switch. Sure enough the o ring was damaged and there was water in the switch. The switch had water repellent grease in it but the water had caused high resistance across the terminals.The things they don't talk about !!! Hope this helps someone else. |
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2004 K1500 sierra, 4 speed auto,4.8 lit. Whats the best/accepted way to service the tranny? i hear different opinions. My owners manual just says "service the transmission". I don't know what that means. |
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i have a 2001 chevrolet silverado RWD its got 126000 kms on it now is there a 5 speed auto available for it because mine feels like it has 5 gears
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Replying to: jsross44 (Feb 20, 2007 5:05 pm) |
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Replying to: speedboy1 (Feb 23, 2009 5:35 pm) |
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Replying to: gnusarev (Aug 12, 2008 12:23 pm) Again, about a year later, same thing. Wix filter was installed again, and again same problem. However, when I replaced the Wix with a GM/Delco filter, the problem didn't get solved. Does anyone out the have any other suggestions? |
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