Radiator & Components for 2021 GMC Sierra 1500
1. Radiator 
2. Block Heater 
3. Reservoir Cap 
4. Reservoir Cap 
5. Lower Baffle Bolt 
6. Lower Baffle Bolt 
7. Radiator Shutter Assembly 
8. Radiator Shutter Assembly 
9. Radiator Shutter Assembly 
10. Reservoir Cap 
11. Reservoir Cap 
12. Cap 
13. Cap 
14. Reservoir Cap 
15. Cap 
16. Reservoir Cap 
17. Reservoir Cap 
18. Reservoir Cap 
19. Reservoir Cap 
20. Reservoir Cap 
21. Reservoir Cap 
22. Cap 
23. Shutter Bolt 
24. Shutter Bolt 
25. Lower Shutter Bolt 
26. Reservoir Cap 
27. Reservoir Cap 
28. Reservoir Cap 
29. Reservoir Cap 
30. Reservoir Cap 
31. Reservoir Cap 
32. Reservoir Cap 
33. Reservoir Cap 
34. Reservoir Cap 
35. Reservoir Cap 
36. Reservoir Cap 37. Lower Baffle Bolt No.
Part # / Description / Price
Price
N/A
Engine Block Heater 
GM
GM Description: Express, savana. 5.3, 6.2L, engine block. Silverado, sierra. CTS. Malibu. 2.7L turbo, engine block. 4.3L, engine block. 3.0L diesel, engine block. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $93.55
$60.26
MSRP $93.55
$60.26
N/A
HVAC Heater Pipe GM
GM Description: 2.7L turbo. CT4. Heater outlet. Helps circulate coolant
Helps prevent engine overheating and damage
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $86.59
$49.35
MSRP $86.59
$49.35
N/A
Inlet Pipe GM
GM Description: 2.7L turbo. Silverado, sierra. Thermostat housing inlet. CT4. Flow control valve inlet.
MSRP $32.69
$22.37
MSRP $32.69
$22.37
N/A
Radiator Drain Petcock GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $24.48
$16.75
MSRP $24.48
$16.75
N/A
$117.23
1
MSRP $411.59
$276.58
2
MSRP $85.66
$58.08
3
MSRP $73.70
$50.41
4
Thermostat Bypass Hose GM
GM Description: To Thermostat. CT4. At flow control valve. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $41.04
$23.39
MSRP $41.04
$23.39
4
By-Pass Hose GM
GM Description: Silverado, sierra. Water inlet elbow. To 7/29/2022. Colorado. To 07/28/22. Canyon. CT4. At water inlet housing. Engine Cooling. Water Pump to Inlet Pipe.
MSRP $32.87
$22.48
MSRP $32.87
$22.48
4
Engine Coolant Bypass Hose GM
GM Description: Hose Only. Pipe to Water Pump. Silverado, sierra. Thermostat bypass lower. Colorado. CT4. At water pump inlet. Canyon.
MSRP $31.12
$17.74
MSRP $31.12
$17.74
4
By-Pass Hose GM
GM Description: Engine Cooling. Exhaust Manifold Outlet Pipe to Thermostat Housing.
MSRP $13.60
$7.75
MSRP $13.60
$7.75
5
MSRP $61.73
$42.23
8
Radiator Surge Tank GM
GM Description: 5.3, 6.2L. Silverado, sierra. 2.7L turbo. 4.3L. Designed to maintain optimal temperatures
Designed to store heated coolant when pressures in the system rise and reintroduce it when cooled
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $48.19
$32.97
MSRP $48.19
$32.97
9
Engine Coolant Air Bleed Hose GM
GM Description: 2.7L turbo. Silverado, sierra. Helps keep engine operating at optimal temperatures
Releases trapped air from the cooling system
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $45.67
$31.24
MSRP $45.67
$31.24
10
Control Valve GM
GM Description: Silverado, sierra. 2.7L turbo. Control Valve. Incl.Gasket. Colorado. Canyon.
MSRP $350.11
$223.51
MSRP $350.11
$223.51
11
Control Valve Seal GM
GM Notes: Included With Coolant Control Valve.
Description: 2.7L turbo. Silverado, sierra.
MSRP $2.19
$1.41
MSRP $2.19
$1.41
12
Water Inlet GM
GM Description: From 07/29/2022. Silverado, sierra. From 11/1/2023. 2.7L turbo, from 11/01/2023. 2.7L turbo, fm 07/29/2022. 2.7L turbo, 2nd design. CT4.
MSRP $91.11
$61.77
MSRP $91.11
$61.77
13
Water Pump Inlet Gasket GM
GM Description: 2.7L turbo. Silverado, sierra. May be made from fiber or a rubberized composite material
MSRP $1.88
$1.07
MSRP $1.88
$1.07
14
Exhaust Manifold Outlet Pipe GM
GM Description: 2.7L turbo. Silverado, sierra. Helps guide exhaust to the exterior of your vehicle
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $182.93
$123.42
MSRP $182.93
$123.42
15
Exhaust Manifold Outlet Pipe Gasket GM
GM Description: Silverado, sierra. 2.7L turbo. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $4.20
$2.72
MSRP $4.20
$2.72
16
MSRP $334.66
$192.47
17
Fan & Motor GM
GM Notes: Includes Fan Blade.
Description: 2.7L turbo, lower. Silverado, sierra. Lower (intercooler).
MSRP $308.45
$172.74
MSRP $308.45
$172.74
18
MSRP $202.97
$136.40