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 MANUALSCHEVROLET2008SILVERADO 3500 2WD V8-6.0LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGAIR DOORSERVICE AND REPAIRREMOVAL AND REPLACEMENTMODE DOOR REPLACEMENT - LOWER
2008 Chevrolet Silverado 3500 2WD V8-6.0L
Mode Door Replacement - Lower
2008 Chevrolet Silverado 3500 2WD V8-6.0LSECTION Mode Door Replacement - Lower
Mode Door Replacement - Lower
Removal Procedure
1. Remove the instrument panel to the service position.
2. If equipped remove the heat stakes (1) from the HVAC module (2) with a screwdriver and a hammer.
3. If equipped remove the HVAC module assembly screws.
4. Separate the HVAC module assembly.
5. Remove the air temperature separator plate (5) from the HVAC module assembly (10).
6. Remove the lower mode door (9) from the HVAC module assembly (10).
Installation Procedure
1. Install the lower mode door (9) to the HVAC module assembly (10).
2. Install the air temperature separator plate (5) to the HVAC module assembly (10).
3. Install the HVAC module assembly halves.
Notice: Refer to Fastener Notice.
Important: For every heat stake removed ensure that you install a screw.
4. Install the screws to the HVAC module assembly.
Tighten the screws to 1.6 N.m (14 lb in).
5. Install the instrument panel.
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.