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Cruise Control Indicator Always On (3.4L)

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Cruise Control Indicator Always On (3.4L)

Step Action Yes No
Schematic Reference: Cruise Control Schematics 
1 Did you perform A Diagnostic System Check-Cruise Control? Go to Step 2  Go to Diagnostic System Check - Cruise Control (3.4L)  or Diagnostic System Check - Cruise Control (3.6L) 
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the cruise lamp parameter in the IPC inputs.
Does the scan tool indicate that the cruise lamp is commanded On?
Go to Step 3  Go to Step 5 
3 With a scan tool, observe the cruise parameter in the powertrain control module (PCM) data list.
Does the scan tool indicate that the cruise control is engaged?
Go to Step 4  Go to Step 5 
4 Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 8  Go to Step 6 
5 Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 8  Go to Step 7 
6
IMPORTANT: The replacement PCM must be programmed.
Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls-3.4L.Did you complete the replacement?
Go to Step 8  -
7 Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.
Did you complete the replacement?
Go to Step 8  -
8 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2