joe wall

2500HD

By joseph Wall
February 7, 2020 in Ask A GM Technician

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joseph Wall

Posted February 7, 2020

on a 2000 chevy 2500 with electronic 4x4 shift. the notifacation center on the dash has shown "service 4x4" and the 4x4 will rarely shift and if it does it normally wont disengage. when it is not working the lights on the control switches will not even respond, the gear it is in just stays lit up. If they do switch then it goes ahead and shifts properly.The fuse is fine. Is that just a bad switch? Why is the service 4x4 on also? thanks

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