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 MANUALSCHEVROLET2008EXPRESS 2500 V8-4.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSENSORS AND SWITCHES - COMPUTERS AND CONTROL SYSTEMSKNOCK SENSORSERVICE AND REPAIR
2008 Chevrolet Express 2500 V8-4.8L
Knock Sensor: Service and Repair
2008 Chevrolet Express 2500 V8-4.8LSECTION Service and Repair
Knock Sensor Replacement
Removal Procedure
1. Remove the intake manifold.
2. Remove the knock sensor (KS) wiring harness assembly.
3. Remove the KS.
Installation Procedure
Notice: Refer to Fastener Notice.
1. Install the KS.
Torque the sensor to 20 N.m (15 lb ft).
2. Install the KS wiring harness assembly.
3. Install the intake manifold.
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.