2004 Chevrolet Silverado 1500 equipped with 6.0L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 5.3L V8 Electric/Gas OHV, 4.8L V8 Gas OHV, 4.3L V6 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
2004 Chevrolet Silverado 1500 equipped with 6.0L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 5.3L V8 Electric/Gas OHV, 4.8L V8 Gas OHV, 4.3L V6 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