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Replacement and OEM Parts for 2021 GMC Sierra 3500 HD Light Relays, Switches & Control Modules

2021 GMC Sierra 3500 HD Light Relays, Switches & Control Modules

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Electrical & Lighting

34 products about 2021 GMC Sierra 3500 HD Light Relays, Switches & Control Modules found

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  • OEM 2021 GMC Sierra 3500 HD Adjuster Switch Diagram - 13597422
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Adjuster Switch

    PartNumber: 13597422
    OEM 2021 GMC Sierra 3500 HD Adjuster Switch - 13597422
    Product Specifications
    • Item Dimensions: 4.4 x 2.4 x 1.9 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13583369
    • Part Description: 2021 GMC Sierra 3500 HD Adjuster Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $38.31 MSRP: $72.30
    You Save: $33.99 (48%)
  • OEM 2021 GMC Sierra 3500 HD Adjuster Switch Diagram - 13597422
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Adjuster Switch

    PartNumber: 13597422
    OEM 2021 GMC Sierra 3500 HD Adjuster Switch - 13597422
    Product Specifications
    • Item Dimensions: 4.4 x 2.4 x 1.9 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13583369
    • Part Description: 2021 GMC Sierra 3500 HD Adjuster Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $38.31 MSRP: $72.30
    You Save: $33.99 (48%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 13518843
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 13518843
    OEM 2021 GMC Sierra 3500 HD Module - 13518843
    Product Specifications
    • Notes: W/Passive Entry
    • Other Names: Control Module, Module
    • Item Dimensions: 9.0 x 8.4 x 2.2 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 13558725
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $100.04 MSRP: $188.78
    You Save: $88.74 (48%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 13533077
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 13533077
    OEM 2021 GMC Sierra 3500 HD Module - 13533077
    Product Specifications
    • Other Names: Module
    • Fitment Type: Direct Replacement
    • Replaced by: 13547618
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $84.17 MSRP: $126.99
    You Save: $42.82 (34%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 84379747
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 84379747
    OEM 2021 GMC Sierra 3500 HD Module - 84379747
    Product Specifications
    • Notes: Accessory Power Control
    • Other Names: Module
    • Item Dimensions: 6.1 x 4.2 x 11.1 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 84361189
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $109.90 MSRP: $207.38
    You Save: $97.48 (48%)
  • OEM 2021 GMC Sierra 3500 HD Engagement Switch Diagram - 13540145
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Engagement Switch

    PartNumber: 13540145
    OEM 2021 GMC Sierra 3500 HD Engagement Switch - 13540145
    Product Specifications
    • Other Names: Cruise Switch, Engagement Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 13553607
    • Part Description: 2021 GMC Sierra 3500 HD Engagement Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $66.09 MSRP: $99.71
    You Save: $33.62 (34%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 13529041
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 13529041
    OEM 2021 GMC Sierra 3500 HD Module - 13529041
    Product Specifications
    • Notes: Instrument Panel, Driver Side, Body Control
    • Other Names: Body Control Module, Module
    • Item Dimensions: 11.0 x 7.5 x 3.3 inches
    • Item Weight: 1.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13520409
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $75.15 MSRP: $141.82
    You Save: $66.67 (48%)
  • OEM 2021 GMC Sierra 3500 HD Cruise Switch Diagram - 13540142
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Cruise Switch

    PartNumber: 13540142
    OEM 2021 GMC Sierra 3500 HD Cruise Switch - 13540142
    Product Specifications
    • Other Names: Cruise Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 13548047
    • Part Description: 2021 GMC Sierra 3500 HD Cruise Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | Base | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $52.07 MSRP: $78.55
    You Save: $26.48 (34%)
  • OEM 2021 GMC Sierra 3500 HD Antitheft Module Diagram - 13516352
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Antitheft Module

    PartNumber: 13516352
    OEM 2021 GMC Sierra 3500 HD Antitheft Module - 13516352
    Product Specifications
    • Notes: Silverado, Sierra 3500 Hd; W/Keyless Engine Start
    • Other Names: Antitheft Module, Control Module, Controller
    • Item Dimensions: 0.3 x 2.4 x 2.0 inches
    • Item Weight: 3.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Antitheft Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $88.87 MSRP: $167.72
    You Save: $78.85 (48%)
  • OEM 2021 GMC Sierra 3500 HD Radio Switch Diagram - 13540147
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Radio Switch

    PartNumber: 13540147
    OEM 2021 GMC Sierra 3500 HD Radio Switch - 13540147
    Product Specifications
    • Notes: W/Leather, W/O Heated; W/Leather, W/Heated
    • Location: Driver Side
    • Other Names: Audio Switch, Radio Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaces: 13528614
    • Part Description: 2021 GMC Sierra 3500 HD Radio Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $22.90 MSRP: $43.22
    You Save: $20.32 (48%)
  • OEM 2021 GMC Sierra 3500 HD Radio Switch Diagram - 13540156
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    OEM (Genuine) 2021 GMC Sierra 3500 HD Radio Switch

    PartNumber: 13540156
    OEM 2021 GMC Sierra 3500 HD Radio Switch - 13540156
    Product Specifications
    • Notes: W/Leather, W/O Heated; W/Leather, W/Heated
    • Other Names: Audio Switch, Radio Switch, Signal Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 13553602
    • Part Description: 2021 GMC Sierra 3500 HD Radio Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $43.15 MSRP: $81.44
    You Save: $38.29 (48%)
  • OEM 2021 GMC Sierra 3500 HD Engagement Switch Diagram - 13540146
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Engagement Switch

    PartNumber: 13540146
    OEM 2021 GMC Sierra 3500 HD Engagement Switch - 13540146
    Product Specifications
    • Other Names: Cruise Switch, Engagement Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 13553606
    • Part Description: 2021 GMC Sierra 3500 HD Engagement Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $38.55 MSRP: $60.63
    You Save: $22.08 (37%)
  • OEM 2021 GMC Sierra 3500 HD SWITCH ASM-RDO VOL Diagram - 13540148
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    OEM (Genuine) 2021 GMC Sierra 3500 HD SWITCH ASM-RDO VOL

    PartNumber: 13540148
    OEM 2021 GMC Sierra 3500 HD SWITCH ASM-RDO VOL - 13540148
    Product Specifications
    • Notes: W/Leather, W/O Heated; W/Leather, W/Heated
    • Location: Passenger Side
    • Other Names: Audio Switch, Radio Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaces: 13528615
    • Part Description: 2021 GMC Sierra 3500 HD SWITCH ASM-RDO VOL
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $25.40 MSRP: $43.22
    You Save: $17.82 (42%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526542
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526542
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526542
    Product Specifications
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.6 x 4.3 x 4.4 inches
    • Item Weight: 2.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 86530685
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $36.58 MSRP: $57.54
    You Save: $20.96 (37%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526544
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526544
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526544
    Product Specifications
    • Notes: 2024, Pro, W/O Perimeter Lighting, W/Fog Lamps
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.8 x 4.5 x 4.4 inches
    • Item Weight: 2.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 84469523
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $37.54 MSRP: $56.90
    You Save: $19.36 (35%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526540
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526540
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526540
    Product Specifications
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.6 x 4.3 x 4.5 inches
    • Item Weight: 2.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 84469519
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $36.33 MSRP: $55.07
    You Save: $18.74 (35%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526543
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526543
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526543
    Product Specifications
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.7 x 4.5 x 4.4 inches
    • Item Weight: 2.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $33.14 MSRP: $50.23
    You Save: $17.09 (35%)
  • OEM 2021 GMC Sierra 3500 HD Multifunction Switch Diagram - 84677657
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Multifunction Switch

    PartNumber: 84677657
    OEM 2021 GMC Sierra 3500 HD Multifunction Switch - 84677657
    Product Specifications
    • Other Names: Multifunction Switch, Turn Signal Switch
    • Item Dimensions: 9.3 x 3.8 x 3.4 inches
    • Item Weight: 0.50 Pounds
    • Replaced by: 84924354
    • Part Description: 2021 GMC Sierra 3500 HD Multifunction Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $31.13 MSRP: $46.98
    You Save: $15.85 (34%)
  • OEM 2021 GMC Sierra 3500 HD Antitheft Module Diagram - 13516351
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Antitheft Module

    PartNumber: 13516351
    OEM 2021 GMC Sierra 3500 HD Antitheft Module - 13516351
    Product Specifications
    • Notes: W/O Keyless Start; Upper Trim, 2020-23
    • Other Names: Antitheft Module, Control Module, Controller
    • Item Dimensions: 0.1 x 2.6 x 2.1 inches
    • Item Weight: 3.10 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Antitheft Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $29.19 MSRP: $55.12
    You Save: $25.93 (48%)
  • OEM 2021 GMC Sierra 3500 HD Engagement Switch Diagram - 13547749
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Engagement Switch

    PartNumber: 13547749
    OEM 2021 GMC Sierra 3500 HD Engagement Switch - 13547749
    Product Specifications
    • Notes: W/O Leather, W/O Pre-Crash; Silverado, Sierra 3500 Hd; Standard Wrap Wheel
    • Other Names: Cruise Switch, Engagement Switch, Switch
    • Replaces: 13528609, 13540144
    • Replaced by: 13553609
    • Part Description: 2021 GMC Sierra 3500 HD Engagement Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $64.20 MSRP: $96.84
    You Save: $32.64 (34%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 39156865
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 39156865
    OEM 2021 GMC Sierra 3500 HD Module - 39156865
    Product Specifications
    • Other Names: Control Module, Module
    • Item Dimensions: 10.5 x 5.4 x 4.2 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 84448656
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $13.10 MSRP: $23.80
    You Save: $10.70 (45%)
  • OEM 2021 GMC Sierra 3500 HD Stab Control Switch Diagram - 84482866
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Stab Control Switch

    PartNumber: 84482866
    OEM 2021 GMC Sierra 3500 HD Stab Control Switch - 84482866
    Product Specifications
    • Notes: 2024, Pro, Center Stack Accessory Switches, W/O Gate Assist
    • Other Names: Hazard Switch, Stab Control Switch, Switch
    • Item Dimensions: 3.5 x 2.6 x 1.2 inches
    • Fitment Type: Direct Replacement
    • Replaced by: 86827740
    • Part Description: 2021 GMC Sierra 3500 HD Stab Control Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $29.04 MSRP: $43.82
    You Save: $14.78 (34%)
  • OEM 2021 GMC Sierra 3500 HD Stab Control Switch Diagram - 84482867
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Stab Control Switch

    PartNumber: 84482867
    OEM 2021 GMC Sierra 3500 HD Stab Control Switch - 84482867
    Product Specifications
    • Other Names: Hazard Switch, Stab Control Switch, Switch
    • Item Dimensions: 3.5 x 2.6 x 1.2 inches
    • Fitment Type: Direct Replacement
    • Replaced by: 86827741
    • Part Description: 2021 GMC Sierra 3500 HD Stab Control Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $30.84 MSRP: $46.53
    You Save: $15.69 (34%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526546
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526546
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526546
    Product Specifications
    • Notes: 2024, Pro, W/Perimeter Lighting, W/Fog Lamps
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.7 x 4.4 x 4.4 inches
    • Item Weight: 2.70 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $38.22 MSRP: $63.29
    You Save: $25.07 (40%)
  • OEM 2021 GMC Sierra 3500 HD Stab Control Switch Diagram - 84835874
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Stab Control Switch

    PartNumber: 84835874
    OEM 2021 GMC Sierra 3500 HD Stab Control Switch - 84835874
    Product Specifications
    • Other Names: Hazard Switch, Stab Control Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 86591015
    • Part Description: 2021 GMC Sierra 3500 HD Stab Control Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $31.67 MSRP: $47.79
    You Save: $16.12 (34%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526545
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526545
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526545
    Product Specifications
    • Notes: 2024, Pro, W/O Perimeter Lighting, W/O Fog Lamps
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.8 x 4.3 x 4.3 inches
    • Item Weight: 2.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 86530686
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | Base, SLE | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $37.77 MSRP: $59.41
    You Save: $21.64 (37%)
  • OEM 2021 GMC Sierra 3500 HD Headlamp Switch Diagram - 84526541
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Headlamp Switch

    PartNumber: 84526541
    OEM 2021 GMC Sierra 3500 HD Headlamp Switch - 84526541
    Product Specifications
    • Other Names: Headlamp Switch
    • Item Dimensions: 6.8 x 4.5 x 4.5 inches
    • Item Weight: 2.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 86530682
    • Part Description: 2021 GMC Sierra 3500 HD Headlamp Switch
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $35.09 MSRP: $55.19
    You Save: $20.10 (37%)
  • OEM 2021 GMC Sierra 3500 HD Module Diagram - 84421595
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Module

    PartNumber: 84421595
    OEM 2021 GMC Sierra 3500 HD Module - 84421595
    Product Specifications
    • Notes: Parking Assist; Silverado, Sierra 3500 Hd; W/O Near Obstacle Detect
    • Other Names: Control Module, Module
    • Item Dimensions: 6.8 x 6.6 x 6.4 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Module
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $12.95 MSRP: $23.42
    You Save: $10.47 (45%)
  • OEM 2021 GMC Sierra 3500 HD AC Relay Diagram - 13500114
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD AC Relay

    PartNumber: 13500114
    OEM 2021 GMC Sierra 3500 HD AC Relay - 13500114
    Product Specifications
    • Notes: Engine Compartment, Main Fuse Block, Lamp Low Beam
    • Item Dimensions: 3.8 x 2.2 x 0.7 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12193606, 19115080, 15328866, 12135034, 15393412, 12088567, 12135170, 19116057
    • Part Description: 2021 GMC Sierra 3500 HD AC Relay
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $9.55 MSRP: $20.04
    You Save: $10.49 (53%)
  • OEM 2021 GMC Sierra 3500 HD SWITCH ASM-L/GATE EXTR REL *PAINT TO MAT Diagram - 84758465
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD SWITCH ASM-L/GATE EXTR REL *PAINT TO MAT

    PartNumber: 84758465
    OEM 2021 GMC Sierra 3500 HD SWITCH ASM-L/GATE EXTR REL *PAINT TO MAT - 84758465
    Product Specifications
    • Other Names: Control Module, Release Switch, Switch
    • Fitment Type: Direct Replacement
    • Replaced by: 85734717
    • Part Description: 2021 GMC Sierra 3500 HD SWITCH ASM-L/GATE EXTR REL *PAINT TO MAT
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $4.71 MSRP: $7.00
    You Save: $2.29 (33%)
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