{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
Guaranteed to Fit2021 GMC Sierra 3500 HD Change Vehicle

AC Delco®
2021 GMC Sierra 3500 HD - Differential Lock Actuator, Sold individually

Tap image and pinch to zoom.
$160.99
Manufacturer #12471543
Guaranteed to Fit2021 GMC Sierra 3500 HD Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
2021 GMC Sierra 3500 HD
Base
8 Cyl 6.6L
4-Door, Extended Cab Pickup, 162.5 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW)
2021 GMC Sierra 3500 HD
SLE
8 Cyl 6.6L
4-Door, Extended Cab Pickup, 162.5 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW)
2021 GMC Sierra 3500 HD
SLT
8 Cyl 6.6L
4-Door, Crew Cab Pickup, 172.0 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW)
2021 GMC Sierra 3500 HD
Denali
8 Cyl 6.6L
4-Door, Crew Cab Pickup, 172.0 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW)
2021 GMC Sierra 3500 HD
AT4
8 Cyl 6.6L
4-Door, Crew Cab Pickup, 158.9 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA

Highlights

Brand:
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold:
Sold individually
Warranty:
24-months or unlimited mile AC Delco limited warranty
Fitnotes:
4-Door, Extended Cab Pickup, 162.5 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW),4-Door, Crew Cab Pickup, 172.0 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), SINGLE/DUAL REAR WHEEL, RIDE & HANDLING(DZW),4-Door, Crew Cab Pickup, 158.9 in. Wheelbase, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
2001-2002 GMC Sierra 2500
SL
All Engines
2-Door, Cab & Chassis, Positraction L/Slip R/Axl(G80), 11.50 Ring Gear Dana , Incls Latching Bracket
2001-2002 GMC Sierra 2500 HD
SL
All Engines
2-Door Cab & Chassis, Positraction L/Slip Rear Axle(G80); 11.50 Ring Gear Dana
2001-2004 Chevrolet Silverado 2500
Base
All Engines
2-Door, Standard Cab Pickup, Positraction L/Slip R/Axl(G80), 11.50 Ring Gear Dana, Incls Latching Bracket
2001-2004 Chevrolet Silverado 2500
LS
All Engines
4-Door, Extended Cab Pickup, Positraction L/Slip R/Axl(G80), 11.50 Ring Gear Dana, Incls Latching Bracket
2001-2004 Chevrolet Silverado 2500
LT
All Engines
4-Door, Extended Cab Pickup, Positraction L/Slip R/Axl(G80), 11.50 Ring Gear Dana, Incls Latching Bracket
Page 1 of 13 | Showing 1 - 5 of 64 results

Product Information

ACDELCO DIFFERENTIAL LOCK ACTUATOR

The factory-original fit and lasting function of ACDelco’s Differential Lock Actuator provides the perfect repair without breaking your budget. Established in 1899, ACDelco manufactures original GM parts and premium OE replacement parts for other brands in the automotive aftermarket.

  • High-grade design delivers extended lifespan
  • Carefully formed to suit your specific vehicle
  • Engineered to OE-quality standards
  • Has undergone stringent evaluation to guarantee proper fit and performance
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

Customer Reviews