Cruise Control Indicator Always On (With Throttle Actuator Control)

WARNING: This page is about a different car, the 2006 GMC Sierra and 2006 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Cruise Control Schematics Connector End View Reference: Cruise Control Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Turn ON the ignition, with the engine OFF. Does the Cruise indicator illuminate after the instrument panel cluster (IPC) displays test?	Go to Step 3	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
3	Turn OFF the ignition. Install a scan tool. Turn ON the ignition, with the engine OFF. With the scan tool, observe the Cruise Control parameter in the IPC Input/Output data list. Does the Cruise Lamp parameter display On?	Go to Step 4	Go to Step 5
4	Replace the powertrain control module (PCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	Go to Step 6	-
5	Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	Go to Step 6	-
6	Operate the system in order to verify the repair. Does the system operate properly?	System OK	Go to Step 2