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 MANUALSCHEVROLET2009IMPALA V8-5.3LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAULCASE ASSEMBLY INSPECTION
2009 Chevrolet Impala V8-5.3L
Case Assembly Inspection
2009 Chevrolet Impala V8-5.3LSECTION Case Assembly Inspection
Case Assembly Inspection
1. Inspect the components that are still on the transmission case for the following conditions:
* Loose, cross-threaded, or damaged pipe fittings on the transmission oil cooler
* A loose, missing, or damaged transmission name plate
2. Inspect the transmission case for the following conditions:
* Gasket sealing surfaces that are damaged or which have porosity
* Bolt or screw holes that are stripped or damaged (repair with a thread insert)
* Damaged or porous case oil passages
* Damaged snap ring grooves or housing splines
* Loose, missing, or damaged band anchor pins
* Damaged or porous case surfaces
* Plugged drain back holes for the torque converter oil seal
3. Inspect the components that are still on the transmission case for the following conditions:
* A loose, plugged, or damaged transmission vent assembly
* A loose, cross-threaded, or damaged oil pressure test hole plug
4. Inspect the dowel pins (526) for damage. Replace if necessary.
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.