GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Cruise Control Schematics

1

Did you perform the Cruise Control Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Cruise Control

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

  1. Turn OFF the ignition.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool, observe the Cruise Control parameter in the IPC Input/Output data list.

Does the Cruise Control parameter display On?

Go to Step 4

Go to Step 5

4

Important: Program the replacement powertrain control module (PCM).

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

Did you complete the replacement?

Go to Step 6

--

5

Replace the IPC. Refer to Instrument Cluster 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