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 MANUALSCHEVROLET2007IMPALA V8-5.3LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINFLEX PLATESERVICE AND REPAIR
2007 Chevrolet Impala V8-5.3L
Flex Plate: Service and Repair
2007 Chevrolet Impala V8-5.3LSECTION Service and Repair
Engine Flywheel Replacement
Removal Procedure
1. Remove the automatic transmission.
2. Remove the flywheel bolts and flywheel.
3. Clean and inspect the engine flywheel. Refer to Engine Flywheel Cleaning and Inspection.
Installation Procedure
Important: The flywheel does not use a locating pin for alignment and will not initially seat against the crankshaft flange or spacer if applicable, but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a 3-stage tightening process.
1. Install the flywheel to the crankshaft.
2. Apply threadlock to the threads of the flywheel bolts. Refer to Sealers, Adhesives, and Lubricants.
Notice: Refer to Fastener Notice.
3. Install the engine flywheel bolts.
* Tighten the bolts a first pass in sequence to 20 N.m (15 lb ft).
* Tighten the bolts a second pass in sequence to 50 N.m (37 lb ft).
* Tighten the bolts a final pass in sequence to 100 N.m (74 lb ft).
4. Install the automatic transmission.
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.