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 MANUALSCHEVROLET2005TRAILBLAZER 4WD V8-5.3L VIN MREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSACCELERATOR PEDAL POSITION SENSORSERVICE AND REPAIR
2005 Chevrolet TrailBlazer 4WD V8-5.3L VIN M
Accelerator Pedal Position Sensor: Service and Repair
2005 Chevrolet TrailBlazer 4WD V8-5.3L VIN MSECTION Service and Repair
ACCELERATOR PEDAL POSITION (APP) SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the accelerator pedal position (APP) sensor electrical connector.
NOTE: Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.
2. Remove the 3 APP sensor bolts (1).
3. Remove the APP sensor (2).
INSTALLATION PROCEDURE
1. Install the APP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the 3 APP sensor bolts (1).
Tighten the bolts to 20 N.m (15 lb ft).
3. Connect the APP sensor electrical connector.
4. Verify that the vehicle meets the following conditions:
- The vehicle is not in a reduced engine power mode.
- The ignition is ON.
- The engine is OFF.
5. Connect a scan tool in order to test for a proper throttle-opening and throttle-closing range.
6. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle.
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.