Whenever i switch to "A4WD" on my 4x4 selector(even for a split second), my "service Four Wheel Drive" light comes on?

Corpsicle

Original poster
Member
Jan 10, 2018
2
Detroit, Michigan
So it seems only my 4HI(and sometimes 4LO) works, whenever I switch to A4WD, even when going past it to switch to 4HI, my service light comes on? I have to quickly switch to 4HI to get my 4x4 to work. Anyone else with this issue? I tried checking the sticky thread for 4x4 issues and didn't quite find my answer.

Vehicle is 2003 Envoy SLT 4x4 I6.

THanks!
 

djthumper

Administrator
Nov 20, 2011
14,950
North Las Vegas
How many miles are on it? When was the last time that you services your transfer case fluid? Have you checked your disconnect?
 

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