kuntie ... 2/10/2013
2000 GMC Sierra 1500 SL 8 Cyl 5.3L
Transmissions & Drivetrains
+whats wrong w/transfercase
138,000 changed front differentail and select switch.this all works.occurs all the time.recently.transfercase.yes.service four wheel drive light.code reader hasnt found it.if i jack up all 4 wheels 4 wheel drive works.when i put it on the ground it dont WHY.fluid was changed last year.