Question about 2003 Chevrolet Silverado 2500HD

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2003 silverado 6.6 allison trans shift problems ??rfi

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Monster80
  • 460 Answers

SOURCE: 97 silverado transmission problem

Theres a few actually in the the bottom of the trans.the most common problem with these trans and assuming its 4l60E is the pressure regulator switch.You have to take off the trans pan to get to it and its not that exspensive of a fix.You can do it your self in about 45min

Posted on Mar 30, 2009

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  • 64 Answers

SOURCE: i have a 94 silverado with a 4l60e trans. 1st and

how it sounds that the solenoids are going bad i would take it back to the shop were you had it rebuilt and have them redo it most shops give a one year warranty on the rebuilds if so they should be able to fix it for free.

Posted on Jun 09, 2009

  • 6 Answers

SOURCE: Have 03 silverado V6 1500 50k miles no shift 2-3

Unless there's other circumstances the shop should have checked the codes first. From there they should have followed a basic diagnostic route such as making sure it has fluid pressure in all valve shift circuits and the correct pressure. But, it's most likely that you need a trans and a long test drive after doing the valves would have gave them a clear direction to go in if the problem is not interrmitant,

Posted on Oct 06, 2009

  • 217 Answers

SOURCE: 04 Silverado no second gear

check color and smell of trans fluid, if not bright red and had a pugnant odor then the trans needs to come out and torn down, You can try a fuel filter that can cause a driveability problem

Posted on Mar 19, 2010

  • 50 Answers

SOURCE: I have a 2002 chevy silverado 2500hd with a 6.6l

The tag is about the only way to tell. But if it is push button you should have a 246.

Posted on Mar 30, 2010

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1 Answer

Stops shifting after i start driving


Allison transmissions are fairly reliable. don't really burn up unless you run them dry to many times. First you need to have the codes read. Even some engine codes will make transmission not run right. Then I would be checking the wires to the transmission for the ECM/TCM (Ohm test them). Along with the plugs for corrosion.

Oct 08, 2014 | 2004 Chevrolet Silverado 2500HD

1 Answer

Clanking noise coming from Allison Transmission on a 2001 Chrevrolet Silverado 8.1 Liter engine


this does sound like theres a loose line tapping the engine/frame,during warm up the engine idles faster which could make it vibrate faster causing the the clanking or tapping noise,if this has started after trans fluid change,then check the lines running from the trani to radiator sometimes the service person might bang into something causing plastic clips that hold the lines to break,try getting under it and have someone start the truck and listen to see where it's coming from also hold the lines & see if the noise stops,the service guy could have unbolted something & never put the bolt back causing the clank ex.line may have a clip holding it thats bolted to the trani pan ?good luck

Dec 29, 2012 | 2001 Chevrolet Silverado 2500HD

1 Answer

Problem with a 2003 Dodge Ram, fault codes indicate a transmission Malfuncting.Tcm scan reveals pressure switch open or closed at wrong time.


Transmission solenoids are usually installed in a transmission valve body, Transmission Control Unit, or transmission control module. If you have a question about a specific Allison Transmission model, you should call Allison Transmission Here is the number for the Texas Distribution office 214-631-5370-----------------------------------------------------------------------------
vas 5054a

Nov 28, 2012 | Cars & Trucks

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

2001 hd 8.1 with allison. Pulled my boat up a big hill, then the tranny warmed up just below the red line, pulled over and looked under, and it was leaking. Just dripping. Put a quart of fluid in it and...


There is no overflow on the Allison Trans, something happened when the trans got over heated, it is a good idea now to also get a trans flush as once you heat it up that bad it starts to break down the fluid.

May 28, 2011 | 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

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