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
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
This vehicle may be equipped with
an alarm system.
An indicator light, on the instrument
panel near the windshield, indicates
the status of the system:
Off: Alarm system is di
Removal Procedure
With the engine OFF, apply and release the brake pedal several times
until the brake pedal becomes firm
to deplete the power brake booster vacuum reserve.
Remove the battery tray. Refer to Battery Tray Replacement .
Raise and support the vehicle. Refer to Lifting and Jacking