Question about 2003 Chevrolet Silverado 2500HD
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Posted on Jan 02, 2017
I have found that when you are going to engauge 4x4 high, it is best to only be going about 3 miles an hour. Not faster, not stopped. It likes some movement to help it mesh. I've had perfect shifts since I started this. Hope it helps. Wade.
Posted on Jan 27, 2009
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
Hi: under the hood in the power distribution box there is a 40 Amp fuse that has to be installed to power up the trailer package. When standing looking from the front left fender it should be at the front right corner, refer to the power distribution diagram on the cover. As well under the box by the spare tire is a plug in type module mounted on the frame. There should be 2 wire harnesses located there, make sure the correct plug in is connected. Hope this helps... please rate suggestion .... ty
Posted on May 22, 2009
Make sure you have the proper amount of tranny fluild in it and get that Valvoline fluid out of it. Allison transmissons have there own type of tranny fluid and you want to use it. You can buy the right stuff from a Allison dealer. Most Detroit Diesel dealers are also Allison dealers. Look them up in your phone book and they will tell you the quanity and sell you five gallon pails of the fluid. Just get the serial number off of the side of the transmisson before you call. Change the fliters again too. Believe me, this is important. My company has Yard horses with Allison transmissions and you don't want to screw with the small stuff. Service them right and they work as hard as you want.
Posted on Aug 09, 2009
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