Cruise Control Indicator Always On (With Throttle Actuator Control)

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis 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 Cruise Control Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Cruise Control
2	Turn the ignition ON, 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 the ignition OFF. Install a scan tool. Turn the ignition ON, with the engine OFF. With the scan tool, observe the Cruise Control parameter in the IPC data list. Does the Cruise Lamp parameter display On?	Go to Step 4	Go to Step 5
4	IMPORTANT: Program the replacement PCM. Replace the PCM. Refer to the appropriate procedure: Powertrain Control Module (PCM) Replacement in Engine Controls - 4.8L, 5.3L, and 6.0L Engine Control Module (ECM) Replacement in Engine Controls - 6.6L (LLY) Engine Control Module (ECM) Replacement in Engine Controls - 6.6L (LB7) Powertrain Control Module (PCM) Replacement in Engine Controls - 8.1L Did you complete the replacement?	Go to Step 6	-
5	Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console. 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