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 MANUALSCHEVROLET2008IMPALA V8-5.3LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINETIMING COMPONENTSSPECIFICATIONS
2008 Chevrolet Impala V8-5.3L
Timing Components: Specifications
2008 Chevrolet Impala V8-5.3LSECTION Specifications
Crankshaft Balancer Bolt - Installation Pass to Ensure the Balancer is Completely Installed 330 N.m (240 lb ft)
Crankshaft Balancer Bolt - First Pass - Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes 50 N.m (37 lb ft)
Crankshaft Balancer Bolt - Final Pass 140 degrees
Front Cover Bolts 25 N.m (18 lb ft)
Timing Chain Tensioner Bolts 25 N.m (18 lb ft)
Crankshaft Balancer Bolt - First Pass - Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes 50 N.m (37 lb ft)
Crankshaft Balancer Bolt - Final Pass 140 degrees
Front Cover Bolts 25 N.m (18 lb ft)
Timing Chain Tensioner Bolts 25 N.m (18 lb ft)
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.