Brackets, Flanges & Hangers for 2021 GMC Sierra 1500
1. Outer Rail 
2. Frame Assembly 
3. Step Bar Assembly 
4. Fender 
5. Windshield Pillar Trim 
6. Inner Lock Pillar 
7. Uniside Assembly 
8. Roof Panel 
9. Side Panel 
10. Body B-Pillar 
11. Inner Center Pillar 
12. Headliner 
13. Sunroof Glass 
14. Park Sensor 
15. Air Bag Control Module Bracket 
16. Steering Wheel 
17. Rear Bumper 
18. Front Floor Pan 
19. Bumper Cover 
20. Headrest 
21. Inner Lock Pillar 
22. Carrier 
23. Front Panel 
24. Uniside Assembly 
25. Inner Windshield Pillar 
26. Front 
27. Headliner 
28. Lower Cover 
29. Cowl Grille 
30. Cowl Cover 
31. Headrest 
32. Tail Gate 
33. Headrest Guide 34. Seat Trim Panel Bracket No.
Part # / Description / Price
Price
2
$1,309.79
2
$1,309.79
4
Front Bumper Impact Bar Bracket 
GM
GM Positions: Left
Notes: PARTS: Part included with front section and frame assembly.
Description: Helps align and secure your vehicle's bumper impact bar
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $60.09
$41.27
MSRP $60.09
$41.27
4
Center Support GM
GM Positions: Front center left
Description: Zr2 bison. Lt, rst, lt tb, ltz, hc, bumper & mounting. Base, pro, sle, elevtn, upper components. At4, slt, denali, upper components. Pro, elevation, sle, upper components. Wt, custom, custom tb, bumper & mounting. Zr2, bumper & mounting. At4x. 2019-22 2022 limited bumper & mounting. Center support.
MSRP $41.96
$28.82
MSRP $41.96
$28.82
4
Center Support GM
GM Positions: Front center right
Description: Zr2 bison. Lt, rst, lt tb, ltz, hc, bumper & mounting. Base, pro, sle, elevtn, upper components. At4, slt, denali, upper components. Pro, elevation, sle, upper components. Wt, custom, custom tb, bumper & mounting. Zr2, bumper & mounting. At4x. 2019-22 2022 limited bumper & mounting. Center support.
MSRP $48.27
$33.15
MSRP $48.27
$33.15
4
Front Driver Side Bumper Impact Bar Bracket GM
GM Positions: Front left outer
Description: At4, slt, denali upper components. Base, sle, elevation upper components. Helps align and secure your vehicle's bumper impact bar
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $112.22
$75.04
MSRP $112.22
$75.04
4
Front Passenger Side Bumper Impact Bar Bracket GM
GM Positions: Front right outer
Description: At4, slt, denali upper components. Base, sle, elevation upper components. Helps align and secure your vehicle's bumper impact bar
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $112.22
$75.04
MSRP $112.22
$75.04
5
Drivetrain and Front Suspension Frame Front Crossmember GM
GM Notes: PARTS: Part included with frame assembly.
Description: 6.6, 8 ft box. Helps strengthen and support your vehicle's frame
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $345.93
$228.19
MSRP $345.93
$228.19
6
Driver Side Frame Reinforcement GM
GM Positions: Left
Notes: PARTS: Part included with frame assembly.
Description: Helps support components to your vehicle's chassis frame
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $92.55
$61.88
MSRP $92.55
$61.88
7
Front Crossmember Bracket GM
GM Notes: PARTS: Part included with frame assembly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $105.24
$70.37
MSRP $105.24
$70.37
8
Transmission Support Crossmember GM
GM Description: 2wd, 2.7L turbo. Helps align and secure your vehicle's transmission
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Collision parts are designed to help promote proper and safe repair
MSRP $285.82
$188.54
MSRP $285.82
$188.54
8
Transmission Support Crossmember GM
GM Description: 4wd, 2.7L turbo. Helps align and secure your vehicle's transmission
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Collision parts are designed to help promote proper and safe repair
MSRP $258.84
$170.74
MSRP $258.84
$170.74
10
Spare Wheel Hoist Crossmember GM
GM Notes: PARTS: Part included with rear section and frame assembly.
Description: Helps strengthen and support your vehicle's frame
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $210.60
$138.92
MSRP $210.60
$138.92
11
Spare Wheel Carrier GM
GM Notes: PARTS: Part included with rear section and frame assembly.
Description: Helps secure and align your vehicle's spare wheel until needed
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $66.82
$45.89
MSRP $66.82
$45.89
12
Passenger Side Rear Leaf Spring Rear Hanger GM
GM Positions: Right
Notes: PARTS: Part included with rear section and frame assembly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $185.30
$102.84
MSRP $185.30
$102.84
12
Rear Driver Side Leaf Spring Rear Hanger GM
GM Positions: Left
Notes: PARTS: Part included with rear section and frame assembly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $185.30
$102.84
MSRP $185.30
$102.84
13
Rear Mount Bracket GM
GM Positions: Right
Notes: PARTS: Part included with rear section and frame assembly.
MSRP $42.73
$29.34
MSRP $42.73
$29.34
13
Driver Side Body Rear Mount Bracket GM
GM Positions: Left
Notes: PARTS: Part included with rear section and frame assembly.
Description: Helps align and secure your body mount
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $42.03
$28.86
MSRP $42.03
$28.86
14
Leaf Spring Bumper GM
GM Positions: Left
Notes: PARTS: Part included with rear section and frame assembly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $142.41
$79.04
MSRP $142.41
$79.04
15
Tow Hook GM
GM Positions: Left
Description: Black. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $86.75
$58.01
MSRP $86.75
$58.01
15
Front Tow Hook GM
GM Positions: Left
Description: Chrome. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $152.24
$101.80
MSRP $152.24
$101.80
15
Front Tow Hook GM
GM Positions: Left
Description: Red. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $106.46
$71.18
MSRP $106.46
$71.18
16
Front Driver Side Bumper Fascia Tow Eye Access Hole Cover GM
GM Positions: Left
Description: Helps enhance your vehicle's appearance
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $21.50
$15.54
MSRP $21.50
$15.54