Question about 2007 Chevrolet Silverado 2500HD
Will not shift back to 2 wheel drive
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Posted on Jan 02, 2017
It sounds like the encoder motor. That's the black plastic box on the driver's side of the transfer case. But just to make sure, the control module for the encoder motor is located behind the passenger side kick plate (inside the vehicle, passenger side, where your feet would be, outside side). Disconnect it for a few seconds and then reconnect it. If the problem still exists, you will have to repair or change your encoder motor. I grabbed one at a scrap yard for less than $100.00.
Posted on Jan 04, 2009
sounds like the clip on the rear output shaft its probably broke. do this by removing the rear driveshaft, and the tail of the transfer case, there are 4 bolts holding it in place. then grab the output shaft and see if it has any front to back movement. if so pull it all the way to the rear and you should see a groove at the front part of the shaft where the clip goes. Then you should find the pieces fo the clip in the tail housing. One person said he found the replacement clip at a local tranny shop. I am calling the dealership parts counter for a new clip for my 97 Tahoe tomorrow. Hope this helps..
Posted on Mar 15, 2009
Pull the kick panel on the passenger side. there is a small box mounted there that is the computer that controls the actuator for the 4wd system. this is notorious for problems due in fact that the connector likes to pull out and away from the module. I had the same problem and the solution is simple.. take a long zip tie and get it between a few of the wires and around the module. tie it in and have a nice day.. it wont come off or try to pop out anymore and you should have no issues getting into 2wd, 4wd h, 4wd L.
Posted on Jun 21, 2009
Your truck should have a solenoid attached to the front axel (more so to the right side). Unplug the solenoid and probe the harness. It should be two wires if not tell me. But it should have twelve volts on one and ground on the other (with the 4wd in-gauged) If that is fine remove the solenoid and see if it actuates when put it into 2wd and 4wd. If that checks out then the problem is either somewhere inside the front axel or maybe the transfer case. But the way you described it I would start with the front axel.
Posted on Nov 11, 2009
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