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2 3. Start the engine. 4. Allow the engine idle at normal operating temperature. 5. Select the maximum blower speed. 6. Select the PANEL air outlet mode. 7. Select the coldest temperature setting. 8. Cycle through all of the blower speeds, modes and temperatures to define what Musty smell Coolant smell Oil smell Does the odor have a musty smell? Go to Step 3 Go to Step 8 3 Inspect the HVAC air inlet grille for debris. Go to Step 4 Go to Step 5 4 Remove any debris. Go to Step 15 - 5 Inspect for wet carpeting. Go to Step 6 Go to Step 14 6 Inspect for the following conditions: Water leaks around the windshield Blockage of the HVAC module drain Leaks around the door seals Go to Step 7 Go to Step 14 7 Repair the leak as necessary. Go to Step 15 - 8 Does the odor have a coolant smell? Go to Step 9 Go to Step 12 9 Inspect the cooling system for leaks. Refer to Go to Step 10 Go to Step 12 10 Inspect for coolant leaking inside the vehicle or
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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