ACDelco Starters, Alternators, ECUs & Wiring for 2012 GMC Sierra 3500 HD
Find parts that fit
We need more information about your vehicle to confirm fit.
2012
GMC
Sierra 3500 HD
Shop by Popular Categories
SPONSOREDSPONSOREDSPONSOREDSPONSOREDSPONSORED
All
Auction
Buy It Now
350 Results
2012-16 Sierra 6.0L Engine computer 12668866 "Programmed to your VIN" ECM PCM (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping2012-16 Sierra 6.0L Engine computer 12643636 "Programmed to your VIN" ECM PCM (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shippingFor 2007-2014 GMC Sierra 3500 HD Alternator AC Delco 35433SDBN 2013 2008 2009 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$223.15Free shipping2016 Suburban 3500 Engine computer 12643636 "Programmed to your VIN" ECM PCM (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping25971828 ACDelco Battery Cable for Chevy Suburban Yukon Silverado 1500 Sierra
Brand New: ACDelco$45.00$12.00 shipping22790288 AC Delco Starter Cable for Chevy Chevrolet Silverado 2500 HD Heavy Duty (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$111.30Free shipping2LF32XE AC Delco Battery Cable for Chevy Suburban Yukon Chevrolet Silverado 1500 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$49.54Free shipping35 watching12670255 AC Delco GM Starter for Chevy Express Van SaVana Silverado 2500 HD GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$237.95Estimated delivery dateEst. delivery Thu, Jun 6or Best Offer22790285 AC Delco Starter Cable for Chevy Suburban Yukon Silverado 1500 Sierra
Brand New: ACDelco$86.91Free shipping2012-16 Silverado Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shippingRemanufactured ACDelco Engine Control Module 12648344 12648344 (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$811.25Free shipping"New" Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco (OE)$299.95Free shipping2012-16 Cruze Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco (OE)$229.95Free shipping237 soldACDelco Starter Bolt 97329632 97329632 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$17.30Free shippingPositive Auxiliary Battery Cable For Chevy Silverado 2500 HD 3500 Sierra MZ48K2 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$92.15Only 1 left!Positive Auxiliary Battery Cable 9WNB32 for Sierra 2500 HD 3500 2011 2012 2013 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$93.78Only 1 left!20881337 AC Delco Alternator New for Chevy Express Van Suburban 145 Amp-AMP
Brand New: ACDelco$185.95$21.95 shippingEngine Ground Strap AC Delco For 2003-2014 Chevy Avalanche Suburban Yukon 1500
Fast & Free Shipping with Free Returns - USA SellerBrand New: ACDelco$18.52or Best OfferFree shippingAC Delco Alternator fits GMC Sierra 3500 HD 2007-2014 41YWKV (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco (OE)$258.92Free shippingACDelco Starter Motor 337-1200 19338750 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$221.05Free shipping22790288 AC Delco Starter Cable for Chevy Chevrolet Silverado 2500 HD Heavy Duty
Brand New: ACDelco$114.99or Best Offer$10.10 shippingFuel Injector Connector (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$36.97Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
$6.88 shipping22783692 AC Delco Battery Cable for Chevy Suburban Yukon Silverado 1500 Sierra (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$96.56Free shipping47 watching2012-16 Sonic Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping2012-16 Silverado Engine computer 12668866 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping2013-16 Encore Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shippingAlternator (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$222.95Estimated delivery dateEst. delivery Thu, Jun 612637617 AC Delco Starter New for Chevy Express Van Chevrolet Silverado 2500 HD
Brand New: ACDelco$178.03Free shippingFor 2007-2014 GMC Sierra 3500 HD Relay AC Delco 37369SG 2008 2009 2010 2011 2012 (Fits: 2012 GMC Sierra 3500 HD)
2013 GM Original Equipment -- New; 5-TERMINAL, BLACKBrand New: ACDelco$17.60Estimated delivery dateEst. delivery Thu, Jun 623167992 AC Delco Battery Cable for Chevy Chevrolet Silverado 2500 HD Heavy Duty (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$117.90Free shipping2LF32XE AC Delco Battery Cable New for Chevy Suburban Yukon Silverado 1500 GMC
Brand New: ACDelco$58.99or Best OfferFree shippingBenefits charity2016 Express Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shippingACDelco Engine Control Module Bracket 23121794 23121794 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$76.73Free shipping22846469 AC Delco Battery Cable for Chevy Suburban Yukon Silverado 2500 HD XL (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$69.57Free shipping22846480 AC Delco Battery Cable New for Chevy Suburban Yukon Silverado 1500 GMC
Brand New: ACDelco$68.99or Best OfferFree shippingBenefits charityACDelco Alternator 335-1196 88878264 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$259.38Free shippingAC Delco GM Original Equipment Relay fits GMC Sierra 3500 HD 2007-2014 18TTPK (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco (OE)$20.5297356246 AC Delco Alternator Bracket for Chevy Express Van SaVana Chevrolet GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$36.45Free shipping12637617 AC Delco Starter for Chevy Express Van Chevrolet Silverado 2500 HD GMC
Brand New: ACDelco$168.49Free shipping337-1200 AC Delco Starter for Chevy Express Van Suburban SaVana Yukon Chevrolet (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$225.81Free shipping22846480 AC Delco Battery Cable for Chevy Suburban Yukon Silverado 1500 Sierra (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$68.19Free shipping20 watchingFor 2007-2012 GMC Sierra 3500 HD Battery Cable Connector AC Delco 69255FCMJ 2008
Brand New: ACDelco$46.44Free shippingFor GMC Sierra 2500 HD 07-14 ACDelco Genuine GM Parts Headlight Wiring Harness (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$101.38Free shippingNegative Auxiliary Battery Cable fits GMC Sierra 3500 HD 2007-2014 58YDFG (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco (OE)$60.02Free shippingNEW 09 -15 Allison TCU TCM Transmission Control Module A50 LML LMM 24256861 T14} (Fits: 2012 GMC Sierra 3500 HD)
FREE OVERNIGHT SHIPPING. PROGRAMMING TO VIN INCLUDED.Brand New: ACDelco$1,359.00Estimated delivery dateEst. delivery Thu, Jun 6Was: $3,359.00Only 1 left!Negative Auxiliary Battery Cable For 2011-2014 GMC Sierra 3500 HD 2012 BC983RF (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$69.01Free shippingNEW ACDelco Positive Battery Cable Assembly 22850354 Chevrolet GMC 2011-2014 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$114.95Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shipping12637617 AC Delco Starter New for Chevy Express Van Chevrolet Silverado 2500 HD
Brand New: ACDelco$205.37Free shippingAir Charge Temperature Sensor Connector (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$43.49Free shipping2009-2015 Silverado Sierra 6.6L Duramax Transmission Control Module p#24259874 (Fits: 2012 GMC Sierra 3500 HD)
Pre-Owned: ACDelco$1,095.00Estimated delivery dateEst. delivery Thu, Jun 6or Best Offer2016 Savana Engine computer 12643636 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping2012-16 Cruze Engine computer 12668866 "Programmed to your VIN" ECM PCM ECU (Fits: 2012 GMC Sierra 3500 HD)
Remanufactured: ACDelco$229.95Free shipping
ACDelco
One stop shop for all things from your favorite brand