2003 Chevrolet Express 1500 4.3L
With AC off, vehicle runs fine. When AC is turned on and vehicle is in gear it sounds as if it is dieseling. Starts out faint when cold and gets louder as it motor heats up. Replaced AC tensioner but no change. Noise is gone with belt removal. When it is makin...
FIX posted 7/11/2012
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Vehicle Data2003 Chevrolet Express 1500
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Vehicle Data
2003 Chevrolet Express 1500
VIN | 1GCFG15X93 |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Affected | Unknown |
Conditions | Knocking |