Fits Silverado 1500 Base Model
or Silverado 1500 HD
2004
4WD; Extended Cab Pickup; 143.5" Wheelbase
2005
Silverado 1500 HD
2006
Silverado 1500 HD
SILVERADO 1500 CLASSIC
6.0L V8
2007
Silverado 1500 HD Classic; 8600 LBS / 3900 KG Gross Vehicle Weight (C6P)
SILVERADO 2500
6.0L V8
2003
Fits Extended Cab Pickup; 4 door; 143.5" Wheelbase; 157.5" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
2004
Fits Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or Extended Cab Pickup; 143.5" Wheelbase; 157.5" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or RWD; Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY), Natural Gas (KL6), Compressed Natural Gas Conversion (KL8), REAR EXIT EXHAUST(N12); California Emission System (NC8), Federal Emissions (NF4), GEN OBD MIL SUPPRESSION EMIS(NF9), Tier-2 Phase-out Federal Emissions (NT9)
or Crew Cab Pickup; 153.0" Wheelbase; 8600 LBS / 3900 KG Gross Vehicle Weight (C6P)
Fits Sierra 1500 HD
or Sierra 1500 Base Model; Exc. Two Inch Body Raise I.D. (HVY)
or Sierra 1500 Base Model; California Emissions LEV (NC1), Federal Emission System (NF2)
2004
Fits Engine VIN U; California Emissions LEV (NC1), Federal Emission System (NF2)
or Engine VIN U; Exc. Two Inch Body Raise I.D. (HVY)
2005
Sierra 1500 HD
2006
Sierra 1500 HD
SIERRA 1500 CLASSIC
6.0L V8
2007
Sierra 1500 HD Classic; 8600 LBS / 3900 KG Gross Vehicle Weight (C6P)
SIERRA 2500
6.0L V8
2003
Fits Extended Cab Pickup; 4 door; 143.5" Wheelbase; 157.5" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
2004
Fits Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or Extended Cab Pickup; 143.5" Wheelbase; 157.5" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY)
or RWD; Standard Cab Pickup; 133.0" Wheelbase; Exc. Two Inch Body Raise I.D. (HVY), Natural Gas (KL6), Compressed Natural Gas Conversion (KL8), REAR EXIT EXHAUST(N12); California Emission System (NC8), Federal Emissions (NF4), GEN OBD MIL SUPPRESSION EMIS(NF9), Tier-2 Phase-out Federal Emissions (NT9)
or Crew Cab Pickup; 153.0" Wheelbase; 8600 LBS / 3900 KG Gross Vehicle Weight (C6P)
YUKON
6.0L V8
2003
California Emissions LEV (NC1), Federal Emission System (NF2)
2004
California Emissions LEV (NC1), Federal Emission System (NF2)
6.0L V8 ELECTRIC/GAS
2008
YUKON XL 1500
6.0L V8
2003
California Emissions LEV (NC1), Federal Emission System (NF2)
2004
Fits California Emissions LEV (NC1), Federal Emission System (NF2)
or California Emission System (NC8), GEN OBD MIL SUPPRESSION EMIS(NF9), TIER 2 A FED EMIS(NT8)