Thermostat & Housing for 2003 GMC Sierra 2500 HD
Vehicle
2003 GMC Sierra 2500 HD
Change Vehicle
Categories
- Back Door
- Back Panel
- Box Assembly
- Bumper
- Bumper & Components - Front
- Bumper & Components - Rear
- Cab Assembly
- Carrier & Components
- Center Console
- Cluster & Switches
- Cowl
- Door & Components
- Doors
- Ducts
- Exterior Trim - Cab
- Exterior Trim - Fender
- Exterior Trim - Front Door
- Exterior Trim - Pick UP Box
- Exterior Trim - Rear Door
- Fender & Components
- Fenders
- Floor - Pick UP Box
- Frame & Components
- Front & Side Panels
- Front Door
- Front Seat Components
- Glass - Front Door
- Glass - Rear Door
- Glass - Windshield
- Glass & Hardware - Back
- Glass, Windows & Related Components
- Glove Box
- Grille & Components
- Hardware
- Hood & Components
- Instrument Panel
- Interior Trim - Cab
- Interior Trim - Front Door
- Interior Trim - Rear Door
- Labels
- Liftgate
- Lock & Hardware
- Master Cylinder - Components On Dash Panel
- Outside Mirrors
- Overhead Console
- Pick UP Box Components
- Radiator Support
- Rear Door
- Rear Seat Components
- Rocker Panel
- Roof & Components
- Roof Lamps
- Running Board
- Seat Belt
- Side Body
- Sound System
- Sunroof
- Tail Gate
- Tailgate
- Tailgate & Midgate
- Tracks & Components
- Trailer Hitch Components
- Uniside
- Wiper & Washer Components
- ABS Components
- Air Bag Components
- Alternator
- Alternator/Generator & Related Components
- Antenna & Radio
- Battery
- Battery & Related Components
- Bulbs - Chassis
- Combination Lamps
- Controls
- Daytime Running Lamp Components
- Daytime Running Lamps
- Diesel Controls
- Electrical Components
- Electrical Connectors
- Electrical Sockets
- Flasher Units, Fuses, & Circuit Breakers
- Flashers
- Fog Lamps
- Front Door
- Front Seat Belts
- Headlamp Components
- Heated Seats
- High Mount Lamps
- Horn
- Identification Lamps
- Ignition Lock
- Ignition System
- Keyless Entry Components
- License Lamps
- Lighting - Exterior
- Lighting - Interior
- Navigation System Components
- Park & Side Marker Lamps
- Power Seats
- Powertrain Control
- Rear Door
- Rear Seat Belts
- Relays
- Senders
- Sensors
- Starter
- Steering Column
- Switches
- Switches, Solenoids & Actuators
- Wipers
- A/C Accumulator/Receiver Drier
- A/C Condenser & Evaporator
- A/C Flow Restrictors
- Automatic Temperature Controls
- Auxiliary Heater & AC
- Blower Motor & Fan
- Condenser, Compressor & Lines
- Control Modules
- Controls
- Evaporator & Heater Components
- Heater
- Hoses & Pipes
- Motors, Core, Case & Related Components
- Sensors
- Switches & Sensors
- Switches, Solenoids & Actuators
- Temperature Controls & Related Components
- Back Door
- Back Panel
- Box Assembly
- Bumper
- Bumper & Components - Front
- Bumper & Components - Rear
- Cab Assembly
- Carrier & Components
- Center Console
- Cluster & Switches
- Cowl
- Door & Components
- Doors
- Ducts
- Exterior Trim - Cab
- Exterior Trim - Fender
- Exterior Trim - Front Door
- Exterior Trim - Pick UP Box
- Exterior Trim - Rear Door
- Fender & Components
- Fenders
- Floor - Pick UP Box
- Frame & Components
- Front & Side Panels
- Front Door
- Front Seat Components
- Glass - Front Door
- Glass - Rear Door
- Glass - Windshield
- Glass & Hardware - Back
- Glass, Windows & Related Components
- Glove Box
- Grille & Components
- Hardware
- Hood & Components
- Instrument Panel
- Interior Trim - Cab
- Interior Trim - Front Door
- Interior Trim - Rear Door
- Labels
- Liftgate
- Lock & Hardware
- Master Cylinder - Components On Dash Panel
- Outside Mirrors
- Overhead Console
- Pick UP Box Components
- Radiator Support
- Rear Door
- Rear Seat Components
- Rocker Panel
- Roof & Components
- Roof Lamps
- Running Board
- Seat Belt
- Side Body
- Sound System
- Sunroof
- Tail Gate
- Tailgate
- Tailgate & Midgate
- Tracks & Components
- Trailer Hitch Components
- Uniside
- Wiper & Washer Components
- ABS Components
- Air Bag Components
- Alternator
- Alternator/Generator & Related Components
- Antenna & Radio
- Battery
- Battery & Related Components
- Bulbs - Chassis
- Combination Lamps
- Controls
- Daytime Running Lamp Components
- Daytime Running Lamps
- Diesel Controls
- Electrical Components
- Electrical Connectors
- Electrical Sockets
- Flasher Units, Fuses, & Circuit Breakers
- Flashers
- Fog Lamps
- Front Door
- Front Seat Belts
- Headlamp Components
- Heated Seats
- High Mount Lamps
- Horn
- Identification Lamps
- Ignition Lock
- Ignition System
- Keyless Entry Components
- License Lamps
- Lighting - Exterior
- Lighting - Interior
- Navigation System Components
- Park & Side Marker Lamps
- Power Seats
- Powertrain Control
- Rear Door
- Rear Seat Belts
- Relays
- Senders
- Sensors
- Starter
- Steering Column
- Switches
- Switches, Solenoids & Actuators
- Wipers
- A/C Accumulator/Receiver Drier
- A/C Condenser & Evaporator
- A/C Flow Restrictors
- Automatic Temperature Controls
- Auxiliary Heater & AC
- Blower Motor & Fan
- Condenser, Compressor & Lines
- Control Modules
- Controls
- Evaporator & Heater Components
- Heater
- Hoses & Pipes
- Motors, Core, Case & Related Components
- Sensors
- Switches & Sensors
- Switches, Solenoids & Actuators
- Temperature Controls & Related Components
Browse Categories
Select category
- Back Door
- Back Panel
- Box Assembly
- Bumper
- Bumper & Components - Front
- Bumper & Components - Rear
- Cab Assembly
- Carrier & Components
- Center Console
- Cluster & Switches
- Cowl
- Door & Components
- Doors
- Ducts
- Exterior Trim - Cab
- Exterior Trim - Fender
- Exterior Trim - Front Door
- Exterior Trim - Pick UP Box
- Exterior Trim - Rear Door
- Fender & Components
- Fenders
- Floor - Pick UP Box
- Frame & Components
- Front & Side Panels
- Front Door
- Front Seat Components
- Glass - Front Door
- Glass - Rear Door
- Glass - Windshield
- Glass & Hardware - Back
- Glass, Windows & Related Components
- Glove Box
- Grille & Components
- Hardware
- Hood & Components
- Instrument Panel
- Interior Trim - Cab
- Interior Trim - Front Door
- Interior Trim - Rear Door
- Labels
- Liftgate
- Lock & Hardware
- Master Cylinder - Components On Dash Panel
- Outside Mirrors
- Overhead Console
- Pick UP Box Components
- Radiator Support
- Rear Door
- Rear Seat Components
- Rocker Panel
- Roof & Components
- Roof Lamps
- Running Board
- Seat Belt
- Side Body
- Sound System
- Sunroof
- Tail Gate
- Tailgate
- Tailgate & Midgate
- Tracks & Components
- Trailer Hitch Components
- Uniside
- Wiper & Washer Components
- ABS Components
- Air Bag Components
- Alternator
- Alternator/Generator & Related Components
- Antenna & Radio
- Battery
- Battery & Related Components
- Bulbs - Chassis
- Combination Lamps
- Controls
- Daytime Running Lamp Components
- Daytime Running Lamps
- Diesel Controls
- Electrical Components
- Electrical Connectors
- Electrical Sockets
- Flasher Units, Fuses, & Circuit Breakers
- Flashers
- Fog Lamps
- Front Door
- Front Seat Belts
- Headlamp Components
- Heated Seats
- High Mount Lamps
- Horn
- Identification Lamps
- Ignition Lock
- Ignition System
- Keyless Entry Components
- License Lamps
- Lighting - Exterior
- Lighting - Interior
- Navigation System Components
- Park & Side Marker Lamps
- Power Seats
- Powertrain Control
- Rear Door
- Rear Seat Belts
- Relays
- Senders
- Sensors
- Starter
- Steering Column
- Switches
- Switches, Solenoids & Actuators
- Wipers
- A/C Accumulator/Receiver Drier
- A/C Condenser & Evaporator
- A/C Flow Restrictors
- Automatic Temperature Controls
- Auxiliary Heater & AC
- Blower Motor & Fan
- Condenser, Compressor & Lines
- Control Modules
- Controls
- Evaporator & Heater Components
- Heater
- Hoses & Pipes
- Motors, Core, Case & Related Components
- Sensors
- Switches & Sensors
- Switches, Solenoids & Actuators
- Temperature Controls & Related Components
- Back Door
- Back Panel
- Box Assembly
- Bumper
- Bumper & Components - Front
- Bumper & Components - Rear
- Cab Assembly
- Carrier & Components
- Center Console
- Cluster & Switches
- Cowl
- Door & Components
- Doors
- Ducts
- Exterior Trim - Cab
- Exterior Trim - Fender
- Exterior Trim - Front Door
- Exterior Trim - Pick UP Box
- Exterior Trim - Rear Door
- Fender & Components
- Fenders
- Floor - Pick UP Box
- Frame & Components
- Front & Side Panels
- Front Door
- Front Seat Components
- Glass - Front Door
- Glass - Rear Door
- Glass - Windshield
- Glass & Hardware - Back
- Glass, Windows & Related Components
- Glove Box
- Grille & Components
- Hardware
- Hood & Components
- Instrument Panel
- Interior Trim - Cab
- Interior Trim - Front Door
- Interior Trim - Rear Door
- Labels
- Liftgate
- Lock & Hardware
- Master Cylinder - Components On Dash Panel
- Outside Mirrors
- Overhead Console
- Pick UP Box Components
- Radiator Support
- Rear Door
- Rear Seat Components
- Rocker Panel
- Roof & Components
- Roof Lamps
- Running Board
- Seat Belt
- Side Body
- Sound System
- Sunroof
- Tail Gate
- Tailgate
- Tailgate & Midgate
- Tracks & Components
- Trailer Hitch Components
- Uniside
- Wiper & Washer Components
- ABS Components
- Air Bag Components
- Alternator
- Alternator/Generator & Related Components
- Antenna & Radio
- Battery
- Battery & Related Components
- Bulbs - Chassis
- Combination Lamps
- Controls
- Daytime Running Lamp Components
- Daytime Running Lamps
- Diesel Controls
- Electrical Components
- Electrical Connectors
- Electrical Sockets
- Flasher Units, Fuses, & Circuit Breakers
- Flashers
- Fog Lamps
- Front Door
- Front Seat Belts
- Headlamp Components
- Heated Seats
- High Mount Lamps
- Horn
- Identification Lamps
- Ignition Lock
- Ignition System
- Keyless Entry Components
- License Lamps
- Lighting - Exterior
- Lighting - Interior
- Navigation System Components
- Park & Side Marker Lamps
- Power Seats
- Powertrain Control
- Rear Door
- Rear Seat Belts
- Relays
- Senders
- Sensors
- Starter
- Steering Column
- Switches
- Switches, Solenoids & Actuators
- Wipers
- A/C Accumulator/Receiver Drier
- A/C Condenser & Evaporator
- A/C Flow Restrictors
- Automatic Temperature Controls
- Auxiliary Heater & AC
- Blower Motor & Fan
- Condenser, Compressor & Lines
- Control Modules
- Controls
- Evaporator & Heater Components
- Heater
- Hoses & Pipes
- Motors, Core, Case & Related Components
- Sensors
- Switches & Sensors
- Switches, Solenoids & Actuators
- Temperature Controls & Related Components
18
- ACDelcoâ„¢ ThermostatGMIncl.Gasket. Silverado, sierra. 6.6l. 185 degrees. All models. 6.6l. Front. Express, savana. 6.6l diesel. 185 degree. Optional. 185 Degrees F. (Unavailable)
- $41.30ThermostatGMSilverado, sierra. 6.6l. 185 degrees. All models. 6.6l. 6.6L, front. Express, savana. 6.6l diesel. 185 degree. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
19
- ACDelcoâ„¢ ThermostatGM180 Degrees F. Silverado, sierra. 6.6l. 180 degrees. All models. 6.6l. Rear. Express, savana. 6.6l diesel. 180 degree. Incl.Gasket. Optional. (Unavailable)
- $36.09ThermostatGMSilverado, sierra. 6.6l. 180 degrees. All models. 6.6l. 6.6L, rear. Express, savana. 6.6l diesel. 180 degree. Silverado, Sierra 2500 HD. 180 degrees. Silverado, Sierra 3500 HD. 180 degrees. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
20
- $8.74Thermostat SealGM6.6L diesel, 185 deg therm. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, 180 deg therm. Seals your vehicle's thermostat housing Helps prevent coolant from leaking from the engine This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
- $6.52Engine Coolant Thermostat Housing GasketGMLower Housing. 6.6L. Helps seal the gap between the exterior of your vehicle's thermostat housing and the exterior of the engine to help prevent leakage This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
20
- $8.74Thermostat SealGM6.6L diesel, 185 deg therm. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, 180 deg therm. Seals your vehicle's thermostat housing Helps prevent coolant from leaking from the engine This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
- $6.52Engine Coolant Thermostat Housing GasketGMLower Housing. 6.6L. Helps seal the gap between the exterior of your vehicle's thermostat housing and the exterior of the engine to help prevent leakage This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
3
- $27.08Radiator Lower InsulatorGM5.3l, 6.0l. 6.6L turbo diesel. 8.1L gas. 4.3L. Gas engine. 6.2L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
- Radiator InsulatorGM4.8, 5.3 & 6.0L. Standard cab, lower. Extended cab. lower. 4.3L. 2wd, 1st design, lower. 4wd, 2500 series, body, lower. 4wd, 1st design, lower. 2wd, 1500 series, body, lower. 4wd, 1500 series, body, lower. (Unavailable)
No.
Part # / Description / Price
Price
3
1999-2019 GM - Radiator Insulator 
GM
GM Positions: Right
Description: 5.3l, 6.0l. 6.6L turbo diesel. 8.1L gas. 4.3L. Gas engine. 6.2L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $39.25
$27.08
MSRP $39.25
$27.08
3
Mount Cushion GM
GM Positions: Lower
Description: 4.8, 5.3 & 6.0L. Standard cab, lower. Extended cab. lower. 4.3L. 2wd, 1st design, lower. 4wd, 2500 series, body, lower. 4wd, 1st design, lower. 2wd, 1500 series, body, lower. 4wd, 1500 series, body, lower.
7
Upper Radiator Air Baffle GM
GM Notes: PARTS: Part includes belt routing and A/C caution label.
Description: 4.8, 5.3 & 6.0L, gmc. 6.6L turbo diesel, gmc. 8.1L gas, gmc. Avalanche. 4.3L, gmc. Without Escalade. Helps properly direct airflow
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
8
1991-2019 GM - Multi-Purpose Clip GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.40
$5.47
MSRP $7.40
$5.47
9
Lower Panel GM
GM Description: 6.6L turbo diesel. Without rear ac, 2500. 8.1L gas. Type 1, 3/4 ton. 4.8, 5.3 & 6.0L. with heavy duty.
13
Radiator Surge Tank GM
GM Description: 6.6L turbo diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
14
1999-2017 GM - 15 P.S.I. Radiator Surge Tank Cap GM
GM Description: Helps seal and regulate cooling pressure in your vehicle's radiator surge tank
MSRP $25.54
$15.96
MSRP $25.54
$15.96
18
Acdelco™ Thermostat GM
GM Description: Incl.Gasket. Silverado, sierra. 6.6l. 185 degrees. All models. 6.6l. Front. Express, savana. 6.6l diesel. 185 degree. Optional. 185 Degrees F.
18
2001-2019 GM - Engine Coolant Thermostat GM
GM Description: Silverado, sierra. 6.6l. 185 degrees. All models. 6.6l. 6.6L, front. Express, savana. 6.6l diesel. 185 degree. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
MSRP $71.82
$41.30
MSRP $71.82
$41.30
19
Acdelco™ Thermostat GM
GM Description: 180 Degrees F. Silverado, sierra. 6.6l. 180 degrees. All models. 6.6l. Rear. Express, savana. 6.6l diesel. 180 degree. Incl.Gasket. Optional.
19
2001-2019 GM - Engine Coolant Thermostat GM
GM Description: Silverado, sierra. 6.6l. 180 degrees. All models. 6.6l. 6.6L, rear. Express, savana. 6.6l diesel. 180 degree. Silverado, Sierra 2500 HD. 180 degrees. Silverado, Sierra 3500 HD. 180 degrees. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
MSRP $62.76
$36.09
MSRP $62.76
$36.09
20
2001-2024 GM - Engine Coolant Thermostat O-Ring GM
GM Description: 6.6L diesel, 185 deg therm. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, 180 deg therm. Seals your vehicle's thermostat housing
Helps prevent coolant from leaking from the engine
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $13.66
$8.74
MSRP $13.66
$8.74
20
2001-2016 GM - Engine Coolant Thermostat Housing Gasket GM
GM Description: Lower Housing. 6.6L. Helps seal the gap between the exterior of your vehicle's thermostat housing and the exterior of the engine to help prevent leakage
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $10.18
$6.52
MSRP $10.18
$6.52
21
Thermostat Housing GM
GM Description: All models. 6.6l. Express, savana. 6.6l diesel. Housing. Option 1.
22
2001-2005 GM - Engine Coolant Thermostat Housing Cover GM
GM Description: 6.6L turbo diesel. Covers and secures your GM vehicle's thermostat
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.