Diesel Aftertreatment System for 2021 Chevrolet Silverado 1500
No.
Part # / Description / Price
Price
2
Reductant Control Module 
GM
GM Description: 6.6L diesel, emission reduction system. Emission reduction level. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $199.28
$109.11
MSRP $199.28
$109.11
3
Emission Reduction Fluid Controller Bolt GM
GM Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $5.20
$3.90
MSRP $5.20
$3.90
4
MSRP $211.68
$115.37
5
Emission Reduction Fluid Tank Shield GM
GM Positions: Right
Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $106.99
$66.81
MSRP $106.99
$66.81
6
Diesel Exhaust Fluid (DEF) Tank Heat Shield GM
GM Positions: Left
Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $119.54
$65.45
MSRP $119.54
$65.45
7
Emission Reduction Fluid Tank Protector GM
GM Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $23.92
$17.72
MSRP $23.92
$17.72
8
Diesel Exhaust Fluid (DEF) Tank Strap GM
GM Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $15.82
$11.07
MSRP $15.82
$11.07
9
Emission Reduction Fluid Exhaust Front Pipe Injector Supply Pipe GM
GM Description: This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors
MSRP $171.26
$93.76
MSRP $171.26
$93.76
9
Emission Reduction Fluid Exhaust Front Pipe Injector Supply Pipe GM
GM Description: Emission reduction system, 3.0L diesel. This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors
MSRP $108.90
$59.62
MSRP $108.90
$59.62
10
Reductant Fluid Injector GM
GM Description: Silverado, sierra. Emission reduction system, 3.0L diesel.
Manufactured to GM OE specification for fit, form, and function
MSRP $122.54
$67.09
MSRP $122.54
$67.09
11
Emission Reduction Fluid Injector Clamp GM
GM Description: Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.32
$7.11
MSRP $8.32
$7.11
12
Emission Reduction Fluid Tank Filler Pipe GM
GM Description: Emission reduction system, 3.0L diesel, reduction tank, standard bed.
Manufactured to GM OE specification for fit, form, and function
MSRP $127.84
$69.99
MSRP $127.84
$69.99
12
Emission Reduction Fluid Tank Filler Pipe GM
GM Description: Emission reduction system, 3.0L diesel, reduction tank, short bed. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $145.52
$79.67
MSRP $145.52
$79.67
13
Fuel Tank Cap GM
GM Description: Silverado, sierra. Without alternate material. Pick-up box. Emission reduction system, 3.0L diesel, fuel tank, 5.8 ft box. 3.0L diesel, emission reduction system, fuel tank, short bed. Filler pipe, crew cab, diesel, 5.8 ft box, to 02/12/2025. Filler pipe, crew cab, diesel, without carbon pro, 5.8 ft box.
MSRP $294.88
$193.20
MSRP $294.88
$193.20
13
Filler Pipe GM
GM Description: Silverado, sierra. Emission reduction system, 3.0L diesel, fuel tank, 6.6 ft box. 3.0L diesel, emission reduction system, fuel tank, standard bed. Filler pipe, crew cab, diesel, 6.6 ft box, crew cab, diesel, 6.6 ft box. Filler pipe, double cab, diesel. Filler pipe, crew cab, diesel, without carbon pro, 6.6 ft box. Double cab. 6'6 box.
MSRP $302.83
$198.42
MSRP $302.83
$198.42
14
Diesel Emissions Fluid (DEF) Tank Filler Cap GM
GM Description: 6.6L diesel, emission reduction system. Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $26.58
$17.28
MSRP $26.58
$17.28
15
Saturn Standard Part GM
GM Description: On fender. Emission reduction system, 3.0L diesel. Fuel filler pipe. Air bags, 6x21mm. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.39
$6.32
MSRP $7.39
$6.32
No.
Part # / Description / Price
Price
1
Exhaust Temperature Sensor GM
GM Description: Silverado, sierra. Sensors, 3.0L diesel, position 1. Helps provide accurate temperature detection
Heat and vibration resistant for operating efficiently
MSRP $58.62
$34.26
MSRP $58.62
$34.26
2
Exhaust Temperature Sensor GM
GM Description: Silverado, sierra. Sensors, 3.0L diesel, position 2. Helps provide accurate temperature detection
Heat and vibration resistant for operating efficiently
MSRP $78.46
$45.86
MSRP $78.46
$45.86
3
Exhaust Temperature Sensor GM
GM Description: Silverado, sierra. Sensors, 3.0L diesel, position 3. Helps provide accurate temperature detection
Heat and vibration resistant for operating efficiently
MSRP $60.18
$35.18
MSRP $60.18
$35.18
4
Nitrogen Oxides Sensor GM
GM Description: NOX Sensor. This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detects the nitrogen oxide content of the exhaust to help optimize emissions
Manufactured to GM OE specification for fit, form, and function
MSRP $287.18
$156.51
MSRP $287.18
$156.51
5
Nitrogen Oxides Sensor GM
GM Description: Silverado, sierra. Position 2. Sensors, 3.0L diesel. This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detects the nitrogen oxide content of the exhaust to help optimize emissions
Manufactured to GM OE specification for fit, form, and function
MSRP $270.66
$147.51
MSRP $270.66
$147.51
6
Nitrogen Oxides Sensor GM
GM Description: Silverado, sierra. Position 3. Sensors, 3.0L diesel. This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detects the nitrogen oxide content of the exhaust to help optimize emissions
Manufactured to GM OE specification for fit, form, and function
MSRP $280.02
$152.61
MSRP $280.02
$152.61
7
Exhaust Particulate Sensor GM
GM Description: Silverado, sierra. Position 3. Sensors, 3.0L diesel, diesel particulate.
Manufactured to GM OE specification for fit, form, and function
MSRP $206.85
$112.74
MSRP $206.85
$112.74
8
Exhaust Pressure Sensor Pipe GM
GM Description: Sensors, 3.0L diesel, for particulate. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $64.38
$37.63
MSRP $64.38
$37.63
9
Exhaust Pressure Sensor Pipe GM
GM Description: Sensors, 3.0L diesel, for egr. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $60.81
$35.55
MSRP $60.81
$35.55
No.
Part # / Description / Price
Price
3
Exhaust Back Pressure Valve GM
GM Description: Single exhaust. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
4
Exhaust Gas Recirculation (EGR) Valve Inlet Gasket GM
GM Description: Dual exhaust. Helps provide a leak-free seal
Allows exhaust pollutants to enter the engine for re-burn
Helps the engine emission system operate properly
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.10
$5.33
MSRP $7.10
$5.33
5
Diesel Particulate Filter 1 GM
GM Description: Silverado, sierra. 3.0l diesel. Upper. Tahoe. 3.0l diesel. Single exhaust, 2020-22. Nox converter with filter. Escalade ESV. 3.0l diesel. Suburban. 3.0l diesel. Yukon. 3.0l diesel.
MSRP $1,583.33
$1,024.10
MSRP $1,583.33
$1,024.10
6
Muffler & Pipe GM
GM Description: Single exhaust, 2020-22, crew cab 5.8 ft box. Single exhaust, crew cab, 5.8 ft bed. Single exhaust, 2020-22, double cab.
MSRP $459.47
$299.39
MSRP $459.47
$299.39
6
Muffler & Pipe GM
GM Description: Single exhaust, 2020-22, crew cab 6.6 ft box. Single exhaust, crew cab, 6.6 ft bed.
$270.42
$270.42
7
Intermediate Pipe Clamp GM
GM Notes: PARTS: Part included with muffler & pipe.
Description: 3.0L diesel, 2021-24. Single exhaust, 2020-22. Single exhaust, 2023-25. 3.0L diesel dual exhaust 2025.
MSRP $21.37
$16.67
MSRP $21.37
$16.67
11
Exhaust Heat Shield GM
GM Description: Single exhaust, front, outer. 6.6L gas, front, #2. Dual exhaust, front, outer. 2.7L, front, outer. 4.3L, front, outer. Can help prevent exhaust heat from damaging your vehicle's undercarriage and engine compartment components
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $29.24
$22.82
MSRP $29.24
$22.82
12
Heat Shield GM
GM Description: Single exhaust, front, center. 6.6L gas, front, #1. 6.6L diesel, front, #2. 2.7L, front, center. Dual exhaust, 2020-22, front, center. Dual exhaust, 2023-25, front, center. 4.3L, front, center. 5.3 & 6.2L dual exhaust. front center.
MSRP $22.58
$17.60
MSRP $22.58
$17.60
13
Heat Shield GM
GM Description: 6.6L gas, center, crew cab. 6.6L diesel, center, crew cab. Dual exhaust, center, crew cab. 2.7L, center, crew cab. Single exhaust, 2020-22, center. Single exhaust, 2023-25, center. 4.3L, center, crew cab. Single exhaust, center, crew cab. 5.3 & 6.2L dual exhaust. center.
MSRP $10.78
$9.06
MSRP $10.78
$9.06
14
Exhaust Front Heat Shield GM
GM Description: Dual exhaust, rear. 4.3L, rear, without 8 ft box. 2.7L, rear, without 8 ft box. Single exhaust, rear. Can help prevent exhaust heat from damaging your vehicle's undercarriage and engine compartment components
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $100.73
$66.18
MSRP $100.73
$66.18
1 This price excludes a refundable manufacturer's core charge. Add the part to your cart to see the core charge.
Related Parts
Part # / Description / Price
Price
Exhaust Gas Temperature Sensor GM
GM Description: Helps provide accurate temperature detection
Heat and vibration resistant for operating efficiently
MSRP $62.90
$36.77
MSRP $62.90
$36.77
Diesel Particulate Filter 1 GM
GM Description: Silverado, sierra. 3.0l diesel. Upper. Tahoe. 3.0l diesel. Single exhaust, 2020-22. Nox converter with filter. Escalade ESV. 3.0l diesel. Suburban. 3.0l diesel. Yukon. 3.0l diesel.
MSRP $1,583.33
$1,024.10
MSRP $1,583.33
$1,024.10
1 This price excludes a refundable manufacturer's core charge. Add the part to your cart to see the core charge.