2003 Chevrolet Silverado 3500 equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
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GM Original Equipment HEAVY DUTY HEATER(C42) EXCEPT ELECTRIC REAR WINDOW DEFOGGER(C49) FOR ORDERING INSTRUCTIONS REFER TO BULLETIN GCUS-9-4131 OR REGIONAL EQUIVALENT
2003 Chevrolet Silverado 3500 equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
GM Original Equipment HEAVY DUTY HEATER(C42) EXCEPT ELECTRIC REAR WINDOW DEFOGGER(C49) FOR ORDERING INSTRUCTIONS REFER TO BULLETIN GCUS-9-4131 OR REGIONAL EQUIVALENT
