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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1406 (CRUISE CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESCRUISE CONTROL INDICATOR INOPERATIVE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Cruise Control Indicator Inoperative

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Cruise Control Indicator Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Cruise Control Indicator Inoperative

Step Action Yes No
Schematic Reference: Cruise Control Schematics 
Connector End View Reference: Powertrain Control Module (PCM) Connector End Views in Engine Controls - 4.2L or to Powertrain Control Module (PCM) Connector End Views in Engine Controls - 4.8L, 5.3L, and 6.0L
1 Did you perform the Cruise Control Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Cruise Control 
2
  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 
3 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 
4 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 
5
IMPORTANT: Program the replacement IPC.
Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.Did you complete the replacement?		 Go to Step 7  -
6
IMPORTANT: Program the replacement PCM.
Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls - 4.2L or to Powertrain Control Module (PCM) Replacement in Engine Controls - 4.8L, 5.3L, 6.0L.Did you complete the replacement?		 Go to Step 7  -
7 Operate the system in order to verify the repair.
Does the system operate properly?		 System OK Go to Step 2 
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.