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Chevy Silverado and GMC Sierra Transmission Problems

502 messages,  Last post on Nov 08, 2009 at 8:49 AM

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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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#43 of 502 89 c2500 tranny problem by steelweels Mar 05, 2007 (5:32 am)
#44 of 502 89 c2500 tranny problem by steelweels Mar 05, 2007 (5:32 am)
89 c2500 2wd 200,000 + miles, tranny wont go past 45 mph and sounds like it is struggling to move truck, sounds like somethinhg is turning hard, at times when starting out acts like it slips but then goes, fluid is ok, changed filter or screen and fluid last summer, was great for a few weeeks then acted up again, some days it is fine, not sure what to try, torque converter, tranny, cant afford shop or $700.00 rebuild at this time, need to get gmc on road first.
#45 of 502 07 Silverado rough shifting by azmike07 Mar 09, 2007 (1:16 am)
#46 of 502 07 Silverado rough shifting by azmike07 Mar 09, 2007 (1:16 am)
I just bought a new 07 Silverado ext cab 1500. I've noticed it shifts kinda rough at low speeds or when its downshifting from first to second. Parking lots are where I notice this most of the time should I be worried about it or has anyone else noticed this? Replies to this message: chrmdome (Mar 11, 2007 9:17 am) dustyk (Mar 15, 2007 4:42 pm) mdsxs4 (May 29, 2007 12:59 pm)
#47 of 502 2005 Silverado 2500 transmission noise by ariles7 Mar 10, 2007 (6:33 pm)
#48 of 502 2005 Silverado 2500 transmission noise by ariles7 Mar 10, 2007 (6:03 pm)
I have just bought a 2005 Silverado 2500. I love the truck and it gets great gas milage and runs great, but I hear a clanking noise when I shift gears. Like something is loose. (5 speed trans.) I have taken it to my local dealer since the dealer I bought it from is 2 hours away. I have emailed the GM company and they said try another dealer and if I am not satisfied with their diagnoses, let GM know and they will make it right. Most people I talk to say it is normal. I just wonder if it normal or if it is a real  problem that GM is trying to avoid. Should we join forces and contact the consumer protection agency or something? Replies to this message: geo9 (Mar 10, 2007 6:33 pm)
#49 of 502 Re: 2005 Silverado 2500 transmission noise [ariles7] by geo9 Mar 10, 2007 (6:33 pm)
Replying to: ariles7 (Mar 10, 2007 6:03 pm) HMMMMMMM.....You have 1 RARE truck....A 2500 5 speed ? Miles? 2 or 4wd? auto or stick??????//   Take it to another dealer...............
#50 of 502 Re: 07 Silverado rough shifting [azmike07] by chrmdome Mar 11, 2007 (9:17 am)
Replying to: azmike07 (Mar 09, 2007 1:16 am) Greetings:   I picked up my 2007 Silverado K1500, 4x4 Crew on Friday, March 9th and noticed the same problem. Rough shift from 1st to 2nd. It had 5 miles on it when delivered. Now at 36 miles the shift is smooth. I attributed the rough shifting to incomplete trans fluid distribution. I have driven the truck at low speeds for last two days and am not noticing any rough shifting now.   Chromedome, San Diego Replies to this message: dustyk (Mar 15, 2007 4:42 pm)
#51 of 502 Re: 07 Silverado rough shifting [chrmdome] by dustyk Mar 15, 2007 (4:42 pm)
Replying to: chrmdome (Mar 11, 2007 9:17 am) The 4L70E and 4L80Es have new shift control assemblies and are now semi-adaptive. Your transmission was probably going through it's learn cycle. I think you'll find that if you ever disconnect the battery for a minute or two, it will do the same thing.   Dusty
#52 of 502 Re: Auto Transmission clunk [jsross44] by pins Mar 17, 2007 (4:37 pm)
Replying to: jsross44 (Jan 29, 2007 7:09 pm) I have a 2004 Sierra, same thing with my shifting. I have had it in twice and same as you, I have been told this is normal. Love my truck!

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