Schematic Reference: Cruise Control Schematics

Connector End View Reference: Powertrain Control Module Connector End Views in Engine Controls - 4.2L or to Powertrain Control Module Connector End Views in Engine Controls - 4.8L, 5.3L, and 6.0L

Did you perform the Cruise Control Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Cruise Control

1. Turn OFF the ignition.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF.
4. With the scan tool, Command the Cruise Control Lamp Test parameter ON, in the IPC Output Controls.

Does the Cruise indicator illuminate in the instrument panel cluster (IPC)?

Go to Step 3

Go to Step 4

Inspect for poor connections at the harness connector of the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 6

Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

Important: Program the replacement IPC.

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 7

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Important: Program the replacement PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls - 4.2L or to Powertrain Control Module Replacement in Engine Controls - 4.8L, 5.3L, 6.0L.

Did you complete the replacement?

Go to Step 7

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Operate the system in order to verify the repair.

Does the system operate properly?

System OK

Go to Step 2