Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1936 (ENGINE CONTROLS AND FUEL - 3.5L - DTC P0010 TO DTC P0232)DTC P0010CIRCUIT/SYSTEM VERIFICATION
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Circuit/System Verification
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Allow the engine to reach operating temperature.
- Set the parking brake and place the vehicle in Park for automatic, or Neutral for manual.
- Observe the CMP variance parameter. The CMP variance will rise for 1-2 seconds until the CMP Angle parameter matches the Desired CMP parameter. The CMP variance should again return to 0 degrees.
- Command the CMP actuator to 20 degrees. The Desired CMP parameter should match the CMP Angle parameter.
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions you observed from the Freeze Frame/Failure Records data.
IMPORTANT:
The supply of clean pressurized engine oil to the CMP actuator is essential to CMP actuator performance.
IMPORTANT:
The engine will run rough and may require throttle input to keep running.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • 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.