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Chevy Silverado and GMC Sierra Transmission Problems

507 messages,  Last post on Dec 08, 2009 at 8:18 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

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#407 of 507 What can I do ? by levans498 Feb 05, 2009 (5:57 am)
#408 of 507 What can I do ? by levans498 Feb 05, 2009 (5:57 am)
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 .
#409 of 507 Allison shifting and indication problem by mtceintl Feb 20, 2009 (1:28 pm)
#410 of 507 Allison shifting and indication problem by mtceintl Feb 20, 2009 (1:43 pm)
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.
#411 of 507 Trans. flush,or drain? by grampy1 Feb 23, 2009 (4:17 pm)
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.
#412 of 507 tranny on 2001 chevrolet silverado by speedboy1 Feb 23, 2009 (5:35 pm)
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 Replies to this message: akjbmw (Mar 06, 2009 12:43 am)
#413 of 507 Re: 2005 Siverado, guality issues [jsross44] by rcgsilver Mar 05, 2009 (6:33 pm)
Replying to: jsross44 (Feb 20, 2007 5:05 pm) I had the same problem with 2000 silverado, it was a dry yoke in the drive train. it took two years and about six trips to the dealer before they found the problem. it was fixed under warranty. i hated driving my truck those two years, i hope\ this helps.
#414 of 507 Re: tranny on 2001 chevrolet silverado [speedboy1] by akjbmw Mar 06, 2009 (12:43 am)
Replying to: speedboy1 (Feb 23, 2009 5:35 pm) I had a '98 K1500 that felt like a "fifth" gear when the torque converter lockup occurred. No idea if yours behaves the same. Also, when lifting your foot off the gas pedal, it coasted for about five seconds before starting a deceleration action. It was OK once I got used to it.
#415 of 507 Re: Allison shifting problem. [gnusarev] by msfexp Mar 10, 2009 (5:10 am)
Replying to: gnusarev (Aug 12, 2008 12:23 pm) My '02 Sierra 2500HD has the same shifting problem. When I attempt to "kick it in the butt" at speed hoping it would drop into a passing gear, the truck acts like it wants to, but then just "dogs down" unless I back off the accelerator. Had this happen before and the deal told me it was the oil filter...yes, oil filter. The previous oil change had a Wix filter installed. Evidently that has an affect on back pressure, typically 4-6 lbs., but was causing 8 -10 lbs. Filter was replaced by Genuine GM parts and the truck ran like a top. 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?
#416 of 507 2000 Silverado 2500 hard shifting by killerbee2 Mar 10, 2009 (2:46 pm)
I recently noticed my transmission shifting hard at times. It normally shifts really smooth,but occasioinally hard. I noticed it more often now that the weather is warmer. the tempeature guage for the transmission runs around 150 degrees. I don't know if the fluid and filter has ever been changed. I bought the truck used and was wondering if it was okay to change them with the mileage at159000.

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