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 MANUALSCHEVROLET2006TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINESERVICE AND REPAIROVERHAULREPAIR INSTRUCTIONS79. ENGINE VALLEY COVER INSTALLATION
2006 Chevrolet Tahoe 2WD V8-4.8L VIN V
79. Engine Valley Cover Installation
2006 Chevrolet Tahoe 2WD V8-4.8L VIN VSECTION 79. Engine Valley Cover Installation
Engine Valley Cover Installation
1. Important: All gasket surfaces should be free of oil or other foreign material during assembly.
Install NEW knock sensor oil seals (520) into the valley cover (555).Lubricate the seal surfaces with clean engine oil.
2. Install the valley cover and NEW gasket.
3. Notice: Refer to Fastener Notice in Service Precautions.
Install the valley cover bolts.
Tighten the valley cover bolts to 25 Nm (18 ft. lbs.).
4. Install the knock sensors.
Tighten the knock sensors to 20 Nm (15 ft. lbs.).
5. Install the knock sensor wire harness.
RENDER: 1.0x
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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.