I have a sporadic problem with my 2004 chevy express 3500. I have isolated when it does it and how to solve the problem when it does, but that's not good enough. The local dealer service department can't fix it.
When I drive several hours, then sit idol for a while, it will not shift to high gear. I don't ever feel it shift at all. It is a struggle, just to get it to go 45mph.
The only way to fix it is to disconnect the battery, then connect it back up.
SOURCE: 2004 chevy 3500 express passenger van transmission
if ur replacing it remove front grill disconnect both lines and carefully remove retaining clips from radiator if replacement is original eguipt mount & reconnect --if its a universal follow instructions usually cut off fittings and use clamps and hose to hook up
SOURCE: 2001 chevy express van 3500 while driving security light comes on
You need to get the codes from the theft deterrent module.Usually a B2960.This will help in the diagnosis of the problem.Hope this helps.Good luck.
SOURCE: 2004 Chevy Silverado Z71 stuck in 4 low
I HAVE THE SAME PROBLEM. CHANGED SWITCH AND THE SAME THING. I START THE TRUCK AND IS IN 4 HI. THEN HIT AUTO AND THEN 2WD THEN IT SHUTS OFF. AND SERVICE LIGHT COMES ON. STAYS IN 2WD. I CAN HEAR ACTUATOR WHEN TRUCK KEY IS TURNED AND CHANGE WHEN BUTTONS ARE PUSHED. I READ IT COULD BE GROUND UNDER DRIVER SIDE BAD. NEEDED TO BE CLEANED. I WILL TRY TOMORROW
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