Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

This DTC may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
If this DTC is retrieved as both a current and history DTC, replace the module.

DTC B1009

Step	Action	Yes	No
1	Did you perform the Diagnostic System Check for the system exhibiting the symptom?	Go to Step 2	Go to Control Module References for the applicable Diagnostic System Check
2	Install a scan tool. Turn ON the ignition, with the engine OFF. Retrieve DTCs. Is the DTC retrieved as a current DTC?	Go to Step 3	Go to Diagnostic Aids
3	IMPORTANT: Perform the programming or setup procedure for the module if required. Replace the control module setting the DTC as current. Refer to Control Module References .Did you complete the replacement?	Go to Step 4	-
4	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK