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blend door switching
when the tempature is set to max cool the air conditoning will switch from cold to hot while driving down the road. its like the blend door is moving back and fourth from the evaporator to the heater core. what will make the blend door switch from hot to cold?... Login to read more. 
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| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2001 Chevrolet Silverado 1500 5.3L
| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
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