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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2075 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSKNOCK SENSOR 1 REPLACEMENTREMOVAL PROCEDURE

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Removal Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Oil Pan Skid Plate & Bolts

Courtesy of GENERAL MOTORS CORP.

Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
If equipped, remove the oil pan skid plate and bolts.

Fig 2: View Of Knock Sensor Heat Shield & Bolt

Courtesy of GENERAL MOTORS CORP.

Remove the knock sensor heat shield bolt and shield.

Fig 3: View Of Engine Wiring Harness Electrical Connector & Knock Sensor Sleeve

Courtesy of GENERAL MOTORS CORP.

Reposition the knock sensor sleeve (2) down, away from the knock sensor.
Disconnect the engine wiring harness electrical connector (1) from the knock sensor.

Fig 4: View Of Knock Sensor & Bolt

Courtesy of GENERAL MOTORS CORP.

Remove the knock sensor bolt and sensor.

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.