DATA COMMUNICATION WIRING SCHEMATICS (ENCORE)
Power, Ground, and Low Speed GMLAN
Fig. 1: Power, Ground, and Low Speed GMLAN
High Speed GMLAN Bus (1 of 2)
Fig. 2: High Speed GMLAN Bus (1 of 2)
High
DIAGNOSTIC CODE INDEX
CONTROL MODULE U CODE LIST
This list includes all Data Communications related U-code DTCs in
alphanumeric order with descriptors for all
devices. Not all DTCs listed will be
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Removal Procedure
WARNING: Refer to Brake Dust Warning .
WARNING: Refer to Brake Fluid Irritant Warning .
NOTE: Always replace disc brake pads in axle sets.
Inspect the fluid level in the brake master cylinder reservoir.
If the brake fluid level is midway between the maximum-full point and
the