Note:
For Warranty repairs ?E
You must use regionally required battery test equipment for warranty repairs.For accurate test results the battery must be disconnected from the vehicle and the equipment connected directly to the battery posts. When setting up the equipment, select “Out of Vehicle?Eand then the correct battery type (Flooded or AGM) and rated CCA (both from the battery label) must be entered.Follow these instructions in order to avoid an incorrect diagnosis because of connections:
Note:
Always write the test code displayed by the tester on the repair order for any warranty purposes. The number is a unique code that describes the test data for a particular battery at a particular time. The test code may occasionally repeat when you retest the same battery. More often, each test will result in a different code. Use the test code from the second, or Out of Vehicle test.
Use the test code from the second test for any warranty purposes.
Starting and Charging Schematics
Connector End View ReferenceComponent Connector End Views
Description and OperationStarting System Description and Operation
Electrical Information ReferenceControl Module References for scan tool information
Special ToolsEL 50313 Battery Tester
Warning:
Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
For Vehicles equipped with OnStar® (UE1) with Back Up Battery:
The Back Up Battery is a redundant power supply to allow limited OnStar® functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar®module). Do not disconnect the main vehicle battery or remove the OnStar® fuse with the ignition key in any position other than OFF. Retained accessory power should be allowed to time out or be disabled (simply opening the driver door should disable retained accessory power) before disconnecting power. Disconnecting power to the OnStar® module in any way while the ignition is On or with retained accessory power activated may cause activation of the OnStar® Back-Up Battery system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The back-up battery is not rechargeable and once activated the back-up battery must be replaced.
Replace the C1 or C1B Battery.
Replace the C1 or C1B Battery.
Clean as required and tighten as specified.
Perform the Diagnostic Repair Verification after completing the repair.
Battery Replacement
Front Fog Lamp Replacement
Front Fog Lamp Replacement
Callout
Component Name
Preliminary Procedure
Remove either the right front or left front wheelhouse liner. Refer
to Front Wheelhouse Liner Replacement.
Disconnect the electrical connector from t ...
Body Control System Description and Operation
The body control system consists of the body control module (BCM), communications,
and various input and outputs. Some inputs, outputs and messages require other modules
to interact with the BCM. The BCM also has discrete input and output terminals to
control the vehicle's body functions. ...
Power Steering Pump Belt Removal
Caution: Do not use belt dressing on the drive belt. Belt dressing
causes the breakdown of the composition of the drive belt. Failure to follow
this recommendation will damage the drive belt.
Cut the power steering pump belt (2) with a appropriate cutting tool at
...