Powertrain Control for 2020 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
1
Engine Water Pump 
GM
GM Description: Genuine GM OEM Engine Water Pump (MPN: 12680257) engineered for Silverado and Sierra 2500 HD and 3500 HD models equipped with 6.6L diesel engines. This factory-original water pump delivers reliable coolant circulation and leak-resistant performance to main ...
MSRP $296.72
$162.47
MSRP $296.72
$162.47
2
Water Pump Cover Seal GM
GM Description: The GM OEM Water Pump Cover Seal (MPN: 12643779) is an essential gasket component engineered to prevent coolant leaks in Silverado and Sierra diesel engines. Specifically designed for 6.6L Duramax diesel applications, this genuine GM part delivers reliable ...
MSRP $8.20
$4.89
MSRP $8.20
$4.89
3
8x1.25x59.05 Front Compartment Side Rail Bolt GM
GM Description: Upgrade your GM vehicle with the genuine OEM 8x1.25x59.05 Front Compartment Side Rail Bolt (MPN: 11562133), engineered by General Motors for secure fastening in engine compartments and storage areas. This authentic GM part is precision-manufactured to exac ...
MSRP $9.78
$6.64
MSRP $9.78
$6.64
4
Water Pump Lower Bolt GM
GM Description: Genuine GM OEM Water Pump Lower Bolt (MPN: 11516988) is an essential fastener designed for 6.6L diesel engine cooling systems on select GM vehicles. This authentic General Motors replacement bolt secures the water pump assembly to maintain proper coolant c ...
MSRP $8.68
$5.89
MSRP $8.68
$5.89
4
M8x1.25x105 Multi-Purpose Bolt GM
GM Positions: Lower
Description: The GM OEM M8x1.25x105 Multi-Purpose Bolt (MPN: 11589253) is a genuine fastener engineered to securely connect critical vehicle components across multiple GM powertrains including the 6.6L diesel, 2.4L, 1.5L turbo, 1.4L, 3.6L, and 2.0L engines. This authen ...
MSRP $21.65
$14.71
MSRP $21.65
$14.71
5
Multi-Purpose Bolt GM
GM Description: The GM OEM Multi-Purpose Bolt (MPN: 11611141) is engineered for secure fastening applications on 6.6L diesel engines, ensuring proper engine block assembly and reliability. This genuine General Motors part meets factory specifications and is ideal for owne ...
MSRP $9.26
$5.52
MSRP $9.26
$5.52
6
Multi-Purpose Nut GM
GM Description: The GM OEM Multi-Purpose Nut (MPN: 11546377) is a genuine General Motors fastener engineered to align and secure critical vehicle components with precision. This authentic GM part meets strict OEM specifications and integrates seamlessly with your vehicle' ...
MSRP $9.10
$5.42
MSRP $9.10
$5.42
7
Thermostat Housing GM
GM Description: GM OEM Thermostat Housing (MPN 12693295) is engineered for 6.6L Duramax diesel engines in Silverado and Sierra heavy-duty trucks, including 2500 HD and 3500 HD models. This genuine General Motors cooling system component regulates engine temperature by con ...
MSRP $209.30
$114.59
MSRP $209.30
$114.59
7
Water Outlet GM
GM Positions: Upper
Description: Genuine GM Water Outlet (MPN: 12706111) is an OEM-specification coolant component engineered to manage engine cooling system flow on select GM vehicles. This factory-original water outlet maintains precise coolant distribution and temperature regulation to ...
MSRP $91.26
$51.97
MSRP $91.26
$51.97
8
Engine Coolant Thermostat Housing Gasket GM
GM Description: The GM OEM Engine Coolant Thermostat Housing Gasket (MPN: 12643149) is a genuine General Motors replacement gasket engineered to seal the critical junction between your thermostat housing and engine block on 6.6L diesel-powered trucks and heavy-duty vehicl ...
MSRP $9.38
$5.59
MSRP $9.38
$5.59
9
Engine Coolant Thermostat Housing Bolt GM
GM Description: The GM OEM Engine Coolant Thermostat Housing Bolt (MPN: 11589001) is a genuine 6.6L diesel engine fastener engineered to secure your vehicle's cooling system components with precision and reliability. This M8 x 1.25 x 25mm threaded bolt fastens directly in ...
MSRP $10.51
$7.14
MSRP $10.51
$7.14
10
Multi-Purpose Stud GM
GM Description: Genuine GM OEM Multi-Purpose Stud (MPN 11611144) is a precision-engineered fastener designed for 6.6L diesel engines in select GM vehicles. This original equipment manufacturer part meets General Motors' strict quality and durability standards, ensuring re ...
MSRP $8.12
$5.52
MSRP $8.12
$5.52
11
Multi-Purpose Nut GM
GM Description: Genuine GM OEM Multi-Purpose Nut MPN 11546365 is a precision-engineered fastener designed to meet General Motors' exacting manufacturing standards. This authentic GM part provides reliable fastening and assembly for select GM vehicles, ensuring proper fit ...
MSRP $2.67
$1.81
MSRP $2.67
$1.81
12
By-Pass Hose GM
GM Description: The GM OEM By-Pass Hose (MPN: 12737234) is an essential cooling system component designed for Chevrolet Silverado and GMC Sierra heavy-duty trucks, including 2500 HD and 3500 HD models. This genuine General Motors bypass hose directs coolant flow to mainta ...
MSRP $80.00
$45.56
MSRP $80.00
$45.56
13
By-Pass Pipe Seal GM
GM Notes: PARTS: Part included with by-pass pipe.
Description: Genuine GM OEM part number 12658352 is a Thermostat Bypass Pipe Seal engineered for 6.6L Duramax Diesel engines found in heavy-duty Chevrolet Silverado and GMC Sierra trucks. This critical cooling system component seals the connection between the thermosta ...
MSRP $9.26
$5.52
MSRP $9.26
$5.52
14
By-Pass Pipe Gasket GM
GM Description: The GM OEM By-Pass Pipe Gasket (MPN: 12737097) is a genuine replacement seal designed for 6.6L diesel engines, specifically connecting the bypass pipe assembly to the water pump housing. This critical cooling system component prevents coolant leaks and mai ...
MSRP $8.20
$4.89
MSRP $8.20
$4.89
15
Engine Coolant Thermostat GM
GM Description: Genuine GM OEM Engine Coolant Thermostat (MPN: 12680457) designed for 6.6L diesel engines in Silverado and Sierra 2500 HD and 3500 HD pickup trucks. This 180-degree thermostat regulates engine coolant temperature to maintain optimal performance and fuel ef ...
MSRP $17.12
$10.20
MSRP $17.12
$10.20
16
Engine Coolant Thermostat GM
GM Description: Genuine GM OEM Engine Coolant Thermostat (MPN: 12680456) maintains optimal engine temperature for Silverado and Sierra 2500 HD and 3500 HD trucks equipped with 6.6L diesel engines. This 185-degree thermostat regulates coolant flow through the radiator syst ...
MSRP $16.72
$9.97
MSRP $16.72
$9.97
17
Engine Coolant Thermostat O-Ring GM
GM Description: The GM OEM Engine Coolant Thermostat O-Ring (MPN: 12680544) is an essential sealing component engineered to prevent coolant leaks from your engine's thermostat housing. This genuine General Motors replacement part is specifically designed for 6.6L diesel e ...
MSRP $14.00
$8.34
MSRP $14.00
$8.34
19
Engine Coolant Temperature Sensor GM
GM Description: The Engine Coolant Temperature Sensor (MPN: 25186240) is a genuine GM OEM part designed to monitor engine coolant temperature and maintain optimal operating conditions across select GM vehicles. This critical engine sensor alerts drivers to overheating con ...
MSRP $32.55
$19.41
MSRP $32.55
$19.41
21
Outlet Pipe GM
GM Description: # Outlet Pipe
Upgrade your 6.6L diesel engine's cooling system with this genuine GM OEM outlet pipe (MPN: 12725092), engineered for 2017-2019 Chevrolet and GMC diesel trucks. This critical cooling component directs coolant flow from the engine block, main ...
MSRP $67.74
$38.58
MSRP $67.74
$38.58
22
Water Pump Outlet Pipe Gasket GM
GM Notes: PARTS: Part included with outlet pipe.
Description: The GM OEM Water Pump Outlet Pipe Gasket (MPN: 12644927) is a genuine General Motors replacement gasket engineered for 2017-2019 Chevrolet Silverado and GMC Sierra heavy-duty trucks with 6.6L diesel engines, including both 2500 HD and 3500 HD models. This ...
MSRP $0.88
$0.52
MSRP $0.88
$0.52
23
Water Pump O-Ring GM
GM Description: The Water Pump O-Ring (MPN: 94011702) is a genuine GM OEM component engineered to seal and protect critical cooling system connections in select diesel-powered General Motors vehicles. This heat and chemical-resistant o-ring maintains a watertight seal bet ...
MSRP $45.19
$25.75
MSRP $45.19
$25.75
23
Acdelco™ Engine Coolant Pipe O-Ring GM
GM Description: Pipe to Oil Cooler. Outlet pipe,seal. 2017-19 6.6L diesel. 6.6L turbo diesel.