Automatic Transmission for 2021 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
1
2020-2025 Chevrolet - Engine Mount 
GM
GM Positions: Left
Description: 6.6L diesel. 6.6L gas. Silverado, Sierra 3500 HD. Right. Silverado, Sierra 2500 HD.
MSRP $107.81
$67.09
MSRP $107.81
$67.09
2
2019-2024 GM - Engine Mount Bolt GM
GM Positions: Left
Description: 5.3 & 6.2L, #2. 6.6L gas, to engine. 4.3L, #2. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $0.51
$0.38
MSRP $0.51
$0.38
3
2020-2024 GM - Engine Mount Support Bolt GM
GM Positions: Left
Description: 6.6L gas, to frame. 6.6L diesel, to frame. Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
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 $7.02
$5.00
MSRP $7.02
$5.00
4
2020-2023 GM - Transmission Mount GM
GM Notes: PARTS: Part has related components that cannot be reused/ reinstalled; bolt and nut.
Description: 6.6L gas, 4wd. Silverado, Sierra 2500 HD. 4wd. Silverado, Sierra 3500 HD. 4wd. Secures transmission
Helps absorb drivetrain vibrations, helping to create a comfortable ride
Designed to function with surrounding components
MSRP $50.31
$31.76
MSRP $50.31
$31.76
4
2020-2023 GM - Transmission Mount GM
GM Notes: PARTS: Part has related components that cannot be reused/ reinstalled; bolt and nut.
Description: 6.6L gas, 2wd. Silverado, Sierra 2500 HD. 2wd. Silverado, Sierra 3500 HD. 2wd. Secures transmission
Helps absorb drivetrain vibrations, helping to create a comfortable ride
Designed to function with surrounding components
MSRP $60.80
$38.40
MSRP $60.80
$38.40
5
2017-2024 GM - Multi-Purpose Bolt GM
GM Notes: PARTS: Part cannot be reused/reinstalled.
Description: 2018-20. 5.3 & 6.2L, 2wd. 6.6L gas. Awd. 2.7L turbo, 2wd. Center. 4.3L. 3.0L diesel, 2wd. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.12
$5.79
MSRP $8.12
$5.79
6
2019-2024 GM - Trans Mount Nut GM
GM Notes: PARTS: Part cannot be reused/reinstalled.
Description: 3.0L diesel. 6.6L gas. 6.6L diesel. 2.7L turbo. 4.3L. 6.2L supercharged.
7
2020-2023 GM - Transmission Mount Heat Shield GM
GM Description: 6.6L gas, 4wd only. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $10.08
$6.90
MSRP $10.08
$6.90
Related Parts
Part # / Description / Price
Price
Transmission 1 GM
GM Description: Silverado, Sierra 2500 HD. 10 speed trans. 4wd. Mgm trans code. Silverado, Sierra 3500 HD. 10 speed trans. 4wd.
MSRP $5,192.08
$4,396.66
MSRP $5,192.08
$4,396.66
F Remanufactured Transmission 1 GM
GM Description: Silverado, Sierra 2500 HD. 10 speed trans. Rwd. Mgm trans code. Silverado, Sierra 3500 HD. 10 speed trans. Exc.Power Take Off. Code-omcf.
MSRP $5,202.86
$4,405.78
MSRP $5,202.86
$4,405.78
F Remanufactured Transmission 1 GM
GM Description: Silverado, Sierra 2500 HD. 10 speed trans. 4wd. Mgu trans code. Silverado, Sierra 3500 HD. 10 speed trans. 4wd.
MSRP $5,501.37
$4,658.55
MSRP $5,501.37
$4,658.55
10-Speed Automatic Transmission Assembly 1 GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8,036.25
$6,805.10
MSRP $8,036.25
$6,805.10
2007-2023 GM - Automatic Transmission Case Extension Seal GM
GM Description: Extension Housing to Transmission. Express, savana. 6l90. Tahoe, Yukon, Escalade. 6 speed trans. Yukon XL, Suburban. 5.3l. 6 speed myc (6l80). Avalanche, Escalade EXT. 6 speed trans. Tahoe, Yukon, Escalade. 4.8l, 5.3l. 6 speed (6l80). Silverado, Sierra 250 ...
MSRP $8.24
$5.88
MSRP $8.24
$5.88
F Remanufactured Transmission 1 GM
GM Description: Silverado, Sierra 2500 HD. 6 speed trans. Rwd. Silverado, Sierra 3500 HD. 6 speed trans. Express 2500. 6-speed trans. 6.6l. Express 3500. 6-speed trans. 6.6l. Savana 2500. 6-speed trans. 6.6l. Savana 3500. 6-speed trans. 6.6l.
MSRP $4,619.76
$3,912.01
MSRP $4,619.76
$3,912.01
F Remanufactured Transmission 1 GM
GM Description: Silverado, Sierra 2500 HD. 6 speed trans. 4wd. Silverado, Sierra 3500 HD. 6 speed trans. 4wd.
MSRP $4,614.99
$3,907.97
MSRP $4,614.99
$3,907.97
2020-2023 GM - Automatic Transmission Extension Housing Seal GM
GM Description: Silverado, Sierra 2500 HD. 10 speed trans. Silverado, Sierra 3500 HD. 10 speed trans. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $1.95
$1.44
MSRP $1.95
$1.44
2007-2023 GM - Automatic Transmission Case Extension Output Shaft Seal GM
GM Description: Extension Housing to Prop Shaft. Express, savana. 6l90. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $56.12
$35.43
MSRP $56.12
$35.43
2006-2023 GM - Automatic Transmission Rear Output Shaft Seal GM
GM Description: Silverado, sierra. 6l90. Silverado, sierra. 6l80. Corvette. XLR. STS-v. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $32.08
$20.98
MSRP $32.08
$20.98
1 This price excludes a refundable manufacturer's core charge. Add the part to your cart to see the core charge.