Question about 2001 Chevrolet Silverado 2500HD

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2001 chevy 2500hd 8.1l gas engine allison trans wont shift after 2nd what shud i check

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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csmock132
  • 4669 Answers

SOURCE: chevy transmission hangs in 2nd,

It just holds 2nd forever. Is the 1-2 shift point high?

Posted on Mar 24, 2009

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  • 16 Answers

SOURCE: 2001 Chevy 2500HD Whining

these transmissions have three sets of planatery gears the whining you hear is simply the gears doing thier job. You have to remember the allison trans is basically the scaled down version of the heavy duty isuzu truck trans they are designed more for thier load capacity then for comfort

Posted on May 10, 2009

Molson02536
  • 3854 Answers

SOURCE: Can anyone please tell me the location of the

The A/C service port is on the accumulator (Filter/Seperator i think is what you called it)on your Silverado. Good luck and keep me posted. Be glad to help.

Posted on Jun 26, 2009

TWITCHDADDY
  • 55 Answers

SOURCE: 2004 chevy silverado 2500hd duramax with allison

could be the alternator

Posted on Nov 07, 2009

RonPark
  • 855 Answers

SOURCE: need a repair manual for a chevy 2002 2500hd 4wd with gas engine

Depending on how technical you want to get try e-bay or a local book store. They would have a good choice and alot of different types you can purchase.

Posted on Dec 17, 2009

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1 Answer

2001 chevy 2500 hd 4x2 allison trans seems to loose pressure after coming to a stop, have to rev engine for a few seconds before it pulls again, whats up with that? 88800 miles


I would start
by changing both trans filters and fluid, makesure you put dex VI in trans then if still having problems take to someone with a Tech 2 scanner and have them reset the trans adapts and try that, what it does is resets trans to factory (new) mode and then as you drive the truck it will adjust to your driving habits and shift points, but loosing pressure makes me think one of your filters is partially plugged...there is a spin on cartridge and the internal one in pan, change em both..good luck

Apr 10, 2012 | 2001 Chevrolet Silverado 2500HD

1 Answer

The transmission is not shifting properly. It seems to be stuck in 2nd or third gear. I cannot shift it manually. The shift indicator light on the steering column does not indicate what gear I'm in. I have...


I think that the rod that connect to the transmission needs
some adjustment if it is stuck on 2, then you need to loosen the screw and adjust the transmission by hand set it to PARK and
then your stick shift you set it in PARK the rod should be connected to the transmission you tighten the screw and your
DONE....

Feb 09, 2018 | 2001 Chevrolet Silverado 2500HD

3 Answers

Range shift inhibed display truck wont move


you can get the part you want from international truck dealer they are a warehouse for allison. it is gear selector switch it will cost you around $55.00

Feb 27, 2009 | 2003 Chevrolet Silverado 2500HD

2 Answers

2001 Chevy 2500HD Whining


change the trans oil our it could be low

Dec 11, 2008 | 2001 Chevrolet Silverado 2500HD

1 Answer

02 gmc allison tran. wont go into tow-haul mode


THERE HAVE BEEN ALOT OF PLOBLEMS WITH THE SHIFTER HANDLE/SWITCH. THE BEST WAY TO VERIFY CONCERN IS USE A DIAG. SCANNER & VIEW TRANSMISSION DATA DISPLAY WHILE ENGINE RUNNING. THE SWITCH IN THE SHIFTER IS FAULTY. IF YOU SEE NO INPUT CHANGE WHILE DEPRESSING SWITCH THIS IS YOUR CONCERN.

Nov 08, 2008 | 2002 GMC Sierra 2500HD

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