Hardware, Fasteners & Fittings for 2021 GMC Sierra 3500 HD
1. Rear Bumper 
2. Step Bar Assembly 
3. Hood 
4. Outer Belt Assembly 
5. Windshield Pillar Trim 
6. Headliner 
7. Console Assembly 
8. Rear 
9. Door Trim Panel 
10. Rear 
11. Bumper 
12. Fender 
13. Nameplate 
14. Door Shell 
15. Armrest Assembly 
16. Lock Pillar Trim 
17. Front 
18. Filler Panel 
19. Console Assembly 
20. Mount Cushion 
21. Door Shell 
22. Box Assembly 
23. Front 
24. Outer Rail 
25. Belt Molding 
26. Tailgate 
27. Multi Switch 
28. Door Trim Panel 
29. Armrest Assembly 
30. Truck Bed Decal 
31. Seat Cushion 
32. Frame Assembly 
33. Bumper Cover Bolt 
34. Mirror Assembly 
35. Steering Wheel 
36. Bumper Cover Bolt 
37. Bumper Cover Bolt 
38. Bumper Cover Bolt 
39. Bumper Cover Bolt 
40. Grille Bolt 
41. Horn 
42. Bumper Cover Bolt 
43. Upper Molding 
44. Grille Bolt 
45. Front Molding Retainer 
46. Grille Surround Bolt 
47. Rear 
48. Quarter Panel Splash Shield Bolt 
49. Hole Cover Bolt 
50. Bumper Cover Bolt 
51. Bumper Cover Bolt 
52. Quarter Panel Splash Shield Bolt 
53. Bumper Cover Bolt 
54. Bumper Cover Bolt 
55. Handle, Outside 
56. Inner Rocker Assembly 
57. Box Assembly 
58. Tail Gate 
59. Headrest 
60. Fender Liner Bolt 
61. Headrest 
62. Fender Liner Bolt 
63. Air Deflector Bolt 
64. Hood Molding Clip 
65. Molding Clip 
66. Rear Insulator Seal 67. License Plate Bracket Rivet No.
Part # / Description / Price
Price
1
Chrome Rear Bumper Impact Bar 
GM
GM Notes: PARTS: Part included with bumper assmebly.
Description: Single exhaust, without park assist chrome. Helps limit damage in low impact collisions
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $958.82
$629.58
MSRP $958.82
$629.58
1
Bar GM
GM Notes: PARTS: Part included with bumper assmebly.
Description: Without SUPER CRUISE without ZR2 BISON. single exhaust, with park assist chrome.
$691.19
$691.19
2
Bumper Protection Pad GM
GM Positions: Left
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison.
MSRP $32.05
$21.24
MSRP $32.05
$21.24
2
Bumper Protection Pad GM
GM Positions: Right
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison.
MSRP $32.05
$21.24
MSRP $32.05
$21.24
3
Push-Pin GM
GM Positions: Left
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.01
$5.02
MSRP $8.01
$5.02
4
Rear Passenger Side Bumper Impact Bar Bracket GM
GM Positions: Right
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 $53.15
$35.22
MSRP $53.15
$35.22
4
Rear Driver Side Bumper Impact Bar Bracket GM
GM Positions: Left
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 $53.15
$35.22
MSRP $53.15
$35.22
5
M8x1.25x25 Multi-Purpose Bolt GM
GM Positions: Left
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $10.97
$6.88
MSRP $10.97
$6.88
6
Multi-Purpose Nut GM
GM Positions: Left
Description: 2wd. Rwd, rear, 14x2,29.9mm. With zr2, zr2 bison. Awd, rear. Fwd, rear. With magnetic ride, with ground clearance package. Without magnetic ride, with ground clearance control. Without AWD. inner. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.92
$4.96
MSRP $7.92
$4.96
7
Rear Driver Side Bumper Impact Bar Bracket GM
GM Positions: Left
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 $158.10
$104.76
MSRP $158.10
$104.76
7
Bumper Bracket GM
GM Positions: Right
Description: Without aev edition. Without bison edition.
MSRP $158.10
$104.76
MSRP $158.10
$104.76
8
M8x1.25x27mm Multi-Purpose Bolt GM
GM Positions: Left
Description: Helps secure and attach your vehicle's radiator support baffle
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.74
$5.13
MSRP $7.74
$5.13
8
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Positions: Center
Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.83
$5.85
MSRP $8.83
$5.85
8
Bumper Impact Bar Bolt GM
GM Positions: Outer
Description: Chevrolet bumper & hardware. Gmc bumper & hardware. 2016-19, bumper & hardware. 10x34.8mm. Bumper & mounting. At4, slt, denali upper components. front. Base, sle, elevation upper components. front. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.22
$5.78
MSRP $9.22
$5.78
8
M6x1.0x25mm Multi-Purpose Bolt GM
GM Positions: Inner
Description: Helps secure and attach your vehicle's radiator support baffle
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.69
$5.09
MSRP $7.69
$5.09
8
Multi-Purpose Bolt GM
GM Description: 2.0L turbo, driver side. At4, slt, denali upper components. 2.7L turbo, auxiliary. 3.0L twin-turbo, auxiliary radiator. 2.7L turbo, rwd. Base, sle, elevation upper components. Coupe, 8mm. Structure & components. Convertible, m8x1.25x30. Fuel tank components. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.06
$5.05
MSRP $8.06
$5.05
9
Multi-Purpose Nut GM
GM Positions: Left
Description: Trailer hitch,U-nut. With trailer package. 6.6, 8 ft box. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $5.29
$3.32
MSRP $5.29
$3.32
9
Multi-Purpose Nut GM
GM Description: Helps align and secure various components
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.69
$6.42
MSRP $9.69
$6.42
10
Rear Bumper Cover Step Pad GM
GM Notes: PARTS: Part included with bumper assmebly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $170.65
$113.08
MSRP $170.65
$113.08
10
Rear Bumper Fascia Step Pad GM
GM Notes: PARTS: Part included with bumper assmebly.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $192.39
$127.49
MSRP $192.39
$127.49
11
MSRP $8.60
$5.39
13
Trailer Wiring Receptacle Cap GM
GM Description: Backup alarm, round. Towing receptacle, round. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.11
$5.71
MSRP $9.11
$5.71
13
Trailer Wiring Receptacle Cap GM
GM Description: Backup alarm, oval. With corner step, towing receptacle. Towing receptacle, oval. Without park assist, without tow package. Without zr2, zr2 bison, without tow package. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $43.36
$27.19
MSRP $43.36
$27.19
14
Bumper Step Pad Bracket GM
GM Positions: Left
Notes: PARTS: Part included with bumper assmebly.
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison.
MSRP $77.74
$51.51
MSRP $77.74
$51.51
14
Bumper Step Pad Bracket GM
GM Positions: Right
Notes: PARTS: Part included with bumper assmebly.
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison.
MSRP $77.74
$51.51
MSRP $77.74
$51.51
15
M4.2x1.41x20 Multi-Purpose Bolt GM
GM Positions: Left
Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.83
$5.85
MSRP $8.83
$5.85
16
Multi-Purpose Nut GM
GM Positions: Left
Description: 5.8 ft box. 6.6 ft box. Bumper support, type 1. Insert,U-nut. Tourx, cover & trim. With gs, structure & mounting. With gs, cover & trim. Wheelhouse liner, #3. Headlamp assy,nut. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.62
$5.40
MSRP $8.62
$5.40
17
M4.2x1.4x20 Multi-Purpose Bolt GM
GM Positions: Left
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $3.30
$2.07
MSRP $3.30
$2.07
18
Multi-Purpose Nut GM
GM Positions: Left
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $10.09
$6.69
MSRP $10.09
$6.69
20
Bumper Step Pad GM
GM Positions: Left
Notes: PARTS: Part included with bumper assmebly.
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison. Pad.
MSRP $46.21
$30.62
MSRP $46.21
$30.62
20
Bumper Step Pad GM
GM Positions: Right
Notes: PARTS: Part included with bumper assmebly.
Description: Without aev edition. Without bison edition. Without super cruise without zr2 bison. Pad.
MSRP $38.94
$25.81
MSRP $38.94
$25.81