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Chevy Silverado and GMC Sierra Transmission Problems

506 messages,  Last post on Dec 01, 2009 at 1:57 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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#423 of 506
Re: Shifting problems. [annabelle1140] by byancey
Mar 29, 2009 (9:12 am)
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Replying to: annabelle1140 (Mar 28, 2009 12:29 pm)

My 2004 GMC started in 3rd gear off and on...Mechanic did tests, changed fluid, filter, etc....found out it was the ignition switch (not the key tumbler part) that was bad. Seems new electronic trans need 12v to work right. $30 part, $20 labor...problem solved.
 
Good luck
#424 of 506
4l60e has no reverse moves in neutral by ineedhelp690
Apr 05, 2009 (6:09 am)
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hi,i need some help please.I just rebuilt a 4l60e with a rebuild video.I used a master overhaul kit.put new vette servo and new 2-3 shift solenoids.i didnt replace the wiring harness.i had rebuilt it cause i lost 3-4 gear.i put the transmission in and it doesnt have reverse,jumps when you put it in park.and drives forward in neutral.but as far as 1-2-3-od they work great shifts are better then ever.if anyone can help please do. thank you
#425 of 506
2003 1500 hd help please by helpnick
Apr 05, 2009 (11:30 am)
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i have an 03 1500hd, and the transmission started overheating for no reason. I replaced the transmission and flushed out everything and it is still overheating. if you have any information about this problem please help me out. thanks, nick
#426 of 506
Re: 4l60e has no reverse moves in neutral [ineedhelp690] by helpnick
Apr 05, 2009 (11:33 am)
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Replying to: ineedhelp690 (Apr 05, 2009 6:09 am)

there is a sprag on the valve body with some teeth on it. if it is not on the right tooth it will cause your problem. also make sure the valve body has sealed properly if there is any fluid bypassing it will also cause these problems. I have access to alldata that can further assist you if you need it.
#427 of 506
Clunk (down shift) 10-15 seconds after being at a complete stop by firejj09
Apr 05, 2009 (12:55 pm)
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I have an 07 Chevy 1500 Silverado 4x2. 10 -15 seconds after being at a complete dead stop not moving at all or anything, my truck will clunk and surge forward almost like i was rear ended. The dealer keeps lubing my driveshaft and yolk but that is not it. It almost feels like the truck stops in 2nd gear and 15 seconds later goes "O crap i'm in 2nd and shift down to 1st." i don't know if it is a computer thing or tranny thing or what. Has anyone had this problem as well and got it fixed. I have the settle back clunk from the extended leaf springs that the lube fixes but this is way different. Please post back if you know the fix or anything that could help.
#428 of 506
Re: 4l60e has no reverse moves in neutral [helpnick] by ineedhelp690
Apr 06, 2009 (7:43 am)
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Replying to: helpnick (Apr 05, 2009 11:33 am)

thank you i will be checking that out today. i tore the pan of yesterday and 2 or 3 bolts were loose. and i think one of the valvebody bolts are in the wrong place.im going to take the valve body down was wondering if you would know where i can get a bolt diagram at to double check my bolt locations.thanks for the help.
#429 of 506
Re: 4l60e has no reverse moves in neutral [ineedhelp690] by ineedhelp690
Apr 06, 2009 (2:01 pm)
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Replying to: ineedhelp690 (Apr 06, 2009 7:43 am)

well in stead of dropping the valve body i decided to tighten up the bolts and found that they were all in the right place and that didnt do anything.still moving in neutral and nothing in reverse.weird how i can dive it though and still have all gears but reverse has nothing.park jumps and neutral drives. i will be checking the spacer plate and gaskets next any tips on putting the gaskets on while tranning still in would be appreciated.And any other info would be helpfull at this time.thank you
#430 of 506
HELP!! by dotr04
Apr 08, 2009 (9:43 am)
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I have a 1994 chevy dually 3500 1-ton and am having trouble with the tranny. After driving on the freeways for a period of time then getting off an off-ramp, the truck ssems like it is in neutral - when I shift to a lower gear nothing happens and when I try to put it in park or reverse it won't go in (makes a grinding noise). It drives fine and their is no slippage when I just drive around town, stoplight to stoplight, and drives fine when on the freeway, but when I get off the freewayit;s like it gets stuck in the gear it's in and wont downshift when I slow down. Eventually it will go back into gear, but not because of something I do - just does it by itself? any ideas?
Thanks,
#431 of 506
Service 4WD Message by bimmerhed
Apr 08, 2009 (6:37 pm)
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I was test driving a Z-71 4X4 and I noticed a Service 4WD message in the cluster. I tried to press the 4WD buttons but nothing seemed to happen. Also noticed a red led that indicated "N" that is located between 2 of the 4WD buttons. The truck has193K miles on it. If the transfer case or transmission needs servicing, will it deactivate the 4WD function??????
#432 of 506
Re: HELP!! [dotr04] by akjbmw
Apr 10, 2009 (12:02 pm)
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Replying to: dotr04 (Apr 08, 2009 9:43 am)

Any other folks thinking heat related?
Plastic pistons in the valving process start to crack (older Sable/Taurasourus do) and get stuck in position from freeway speed heat? Maybe gunk collection?
Find a trans shop or mechanic you trust.
I would expect a shop to be required to do a whole trans redo. Liability issues would prevent a less expensive valve body "patch".

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