Has the truck been scanned for codes yet? You need this as a first step, the circuits involved are:
Accelerator pedal possition sensor, Clutch pedal possition switch, instrument cluster, Auxilliary powertrain control module, overdrive cancel switch, and the four wheel drive control module. Needs to be narrowed down some. Scan first.
Saturday, June 20th, 2009 AT 4:34 AM