I. OE Replacement Part:

15130738, 911-197, 911197
17113539, 17113676
II. Compatibility:

Replacement for Chevy Silverado 1500 1999-2004
Replacement for Chevy Silverado 1500 HD 2001-2003
Replacement for Chevy Silverado 2500 1999-2004
Replacement for Chevy Silverado 2500 HD 2001-2004
Replacement for Chevy Silverado 3500 2001-2004
Replacement for GMC Sierra 1500 1999-2004
Replacement for GMC Sierra 1500 HD 2001-2003
Replacement for GMC Sierra 2500 1999-2004
Replacement for GMC Sierra 2500 HD 2001-2004
Replacement for GMC Sierra 3500 2001-2004

2004 Silverado 1500 Base, Hybrid, LS, LT, SS, WT, Z71 Off-Road 4.3L V6 - Gas, 4.8L V8 - Gas, 5.3L V8 - Electric/Gas, 5.3L V8 - Flex, 5.3L V8 - Gas, 6.0L V8 - Gas
2004 Silverado 2500 Base, LS, LT, WT 6.0L V8 - Gas
2004 Silverado 2500 HD Base, LS, LT, WT 6.0L V8 - CNG, 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas
2004 Silverado 3500 Base, LS, LT, WT 6.0L V8 - CNG, 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas
2004 Sierra 1500 Base, Denali, SLE, SLT, WT 4.3L V6 - Gas, 4.8L V8 - Gas, 5.3L V8 - Flex, 5.3L V8 - Gas, 6.0L V8 - Gas
2004 Sierra 2500 Base, SLE, SLT, WT 6.0L V8 - Gas
2004 Sierra 2500 HD Base, SLE, SLT, WT 6.0L V8 - CNG, 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas
2004 Sierra 3500 Base, SLE, SLT, WT 6.0L V8 - CNG, 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas
2003 Silverado 1500 Base, LS, LT, SS, WT 4.3L V6 - Gas, 4.8L V8 - Gas, 5.3L V8 - Flex, 5.3L V8 - Gas, 6.0L V8 - Gas
2003 Silverado 1500 HD LS, LT 6.0L V8 - Gas
2003 Silverado 2500 Base, LS, LT 6.0L V8 - Gas
2003 Silverado 2500 HD Base, LS, LT, WT 6.0L V8 - CNG, 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas
2003 Silverado 3500 Base, LS, LT 6.0L V8 - Gas, 6.6L V8 - Diesel, 8.1L V8 - Gas