Belts & Pulleys for 2025 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
1
MSRP $41.86
$21.97
2
Air Conditioning Compressor Belt Kit with Tool 
GM
GM Notes: PARTS: Part cannot be reused/reinstalled.
Description: Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt
Creates a secure point of contact with the pulley, which allows for traction
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $96.22
$51.78
MSRP $96.22
$51.78
2
A/C Compressor Belt 
ACDelco
ACDelco Notes: PARTS: Part cannot be reused/reinstalled.
Description: ACDelco GM Original Equipment Serpentine Belts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These serpentine belts allows for the operation of various pulleys and drive belt accessories with the use of a sin ...
Not For Sale
Not For Sale
3
Drive Belt Idler Pulley GM
GM Description: 2018-20. Silverado, Sierra 2500 HD. Single alternator. Silverado, Sierra 3500 HD. Dual alternator. Gas. Upper. Repair noisy idler pulley bearing
MSRP $44.81
$23.52
MSRP $44.81
$23.52
3
Drive Belt Idler Pulley ACDelco
ACDelco Description: GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These accessory drive belt idler pulleys are part of the accessory drive belt system on the front of your engi ...
$19.32
$19.32
5
M10x1.5x85 Multi-Purpose Bolt GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $94.80
$56.80
MSRP $94.80
$56.80
No.
Part # / Description / Price
Price
1
Serpentine Belt GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L gas, with dual alternators.
MSRP $43.26
$22.71
MSRP $43.26
$22.71
3
Drive Belt Idler Pulley GM
GM Positions: Right
Description: 2018-20. Silverado, Sierra 2500 HD. Single alternator. Silverado, Sierra 3500 HD. Dual alternator. Gas. Upper. Repair noisy idler pulley bearing
MSRP $44.81
$23.52
MSRP $44.81
$23.52
3
Drive Belt Idler Pulley ACDelco
ACDelco Positions: Right
Description: GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These accessory drive belt idler pulleys are part of the accessory drive belt system on the front of your engi ...
$19.32
$19.32
4
Idler Pulley GM
GM Positions: Left
Description: Silverado, Sierra 2500 HD. Lower. 6.6L gas, with dual alternators, smooth. Silverado, Sierra 3500 HD.
MSRP $172.32
$90.46
MSRP $172.32
$90.46
4
Belt Idler Auxiliary Pulley ACDelco
ACDelco Positions: Left
Description: GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These accessory drive belt idler pulleys are part of the accessory drive belt system on the front of your engi ...
Not For Sale
Not For Sale
5
Idler Pulley GM
GM Description: Silverado, Sierra 2500 HD. Lower. Ribbed. 6.6L gas, with dual alternators, grooved. Silverado, Sierra 3500 HD.
MSRP $111.60
$58.58
MSRP $111.60
$58.58
5
Belt Idler 2nd Auxiliary Pulley ACDelco
ACDelco Description: GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These accessory drive belt idler pulleys are part of the accessory drive belt system on the front of your engi ...
Not For Sale
Not For Sale
5
Acdelco™ Idler Pulley GM
GM Description: Silverado, Sierra 2500 HD. Lower. Ribbed. 6.6L gas, with dual alternators, grooved. Silverado, Sierra 3500 HD.
6
Drive Belt Tensioner GM
GM Description: 2018-20. Express, savana. 4.3l. Silverado, Sierra 2500 HD. Gas. Silverado, Sierra 3500 HD. Helps keep drive belt at correct tension to help maintain proper function
MSRP $78.68
$47.08
MSRP $78.68
$47.08
6
Drive Belt Tensioner ACDelco
ACDelco Description: GM Genuine Parts Drive Belt Tensioner Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These assemblies are spring-loaded pulleys designed to draw tension on your vehicle's serpentine belt. GM Genuine ...
$46.20
$46.20
Related Parts
Part # / Description / Price
Price
Idler Pulley GM
GM Description: Silverado, Sierra 2500 HD. Lower. 6.6L gas, with dual alternators, smooth. Silverado, Sierra 3500 HD.
MSRP $172.32
$90.46
MSRP $172.32
$90.46
Belt Idler Auxiliary Pulley ACDelco
ACDelco Description: GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These accessory drive belt idler pulleys are part of the accessory drive belt system on the front of your engi ...
Not For Sale
Not For Sale
Serpentine Belt GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L gas, with dual alternators.
MSRP $43.26
$22.71
MSRP $43.26
$22.71