Car Parts Discount

GMC Sierra 2500 HD Alternator

Your Sierra 2500 HD is a prized possession.

Select Your VehicleCar aficionados know that a brand you can trust is built into each GMC, and know that only top quality repair Sierra 2500 HD parts will suffice when maintenance needs to be done. The vehicle in your driveway is head and shoulders above the rest when it comes to all the vehicles on the road today. When your GMC Sierra 2500 HD left the factory, it was destined for a driver who prioritizes longevity in their automobile. It's not a regular occurrence that you discover you need a replacement Alternator to repair your automobile.

Why Alternator replacement is so important.

Without some key electrical parts, your engine wouldn't be able to stay running. Your GMC Sierra 2500 HD alternator has a pulley that spins as the crankshaft spins because they are both connected by a drive belt. Inside that alternator, an electromagnetic reaction takes place that generates a constant supply of current for your vehicle. The energy from your alternator goes back to the battery and keeps it charged, while also supplying voltage to circuits that power your climate control system, stereo, headlights, and plenty more on your GMC Sierra 2500 HD.

We've got what you need.

Bring your Sierra 2500 HD back to life with the best replacement parts from the experts at Car Parts Discount. Make all your future car parts purchases at carpartsdiscount.com and realize incredible savings on all your upcoming repairs. When your GMC requires a new replacement Alternator, there's no need to trust any store other than the authority, Car Parts Discount. All the GMC Sierra 2500 HD Alternator parts on this page will fit vehicles made in 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001. Choose your year below to refine your search.

Info: Select your make and model in the red title bar above so we can show the parts you need.
GMC Sierra 2500 HD Alternator, OEM: 91516Remy
2001-2002 GMC Sierra 2500 HD Remy Alternator 91516
94.75, Save 39%   NEW ITEM
OEM: 91516, Item: 637586
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

TYC
2003-2004 GMC Sierra 2500 HD TYC Alternator 2-08291
95.65, Save 39%   NEW ITEM
OEM: 2-08291, Item: 655950
  Only 7 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 8292603NMPA
2001-2007 GMC Sierra 2500 HD MPA Alternator 8292603N
96.55, Save 39%   NEW ITEM
OEM: 8292603N, Item: 1396039
  Only 7 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 2-08292/208292TYC
2003-2007 GMC Sierra 2500 HD TYC Alternator 2-08292
106.65, Save 39%   NEW ITEM
OEM: 2-08292, Item: 655951
  Only 4 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 8247603NMPA
2001-2005 GMC Sierra 2500 HD MPA Alternator 8247603N
107.95, Save 39%   NEW ITEM
OEM: 8247603N, Item: 1396048
  Only 2 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 8302603NMPA
2005-2008, 2010 GMC Sierra 2500 HD MPA Alternator 8302603N
107.95, Save 39%   NEW ITEM
OEM: 8302603N, Item: 1396040
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 8292603MPA
2003-2007 GMC Sierra 2500 HD MPA Alternator 8292603
112.55, Save 39%, Core: $ 14.00   NEW ITEM
OEM: 8292603, Item: 1395980
  Only 3 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 91602Remy
2001-2005 GMC Sierra 2500 HD Remy Alternator 91602
113.25, Save 39%   NEW ITEM
OEM: 91602, Item: 637604
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 2-11075/211075TYC
2005-2007 GMC Sierra 2500 HD TYC Alternator 2-11075
124.65, Save 39%   NEW ITEM
OEM: 2-11075, Item: 655986
  Only 4 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 11075MPA
2005-2006 GMC Sierra 2500 HD MPA Alternator 11075
128.15, Save 39%, Core: $ 40.00   NEW ITEM
OEM: 11075, Item: 1395545
  Only 5 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 15721MPA
2006-2007 GMC Sierra 2500 HD MPA Alternator 15721
128.95, Save 39%, Core: $ 30.00   NEW ITEM
OEM: 15721, Item: 1395855
  Only 2 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 335-1068/3351068ACDelco
2001-2002 GMC Sierra 2500 HD ACDelco Alternator 335-1068
129.95, Save 39%   NEW ITEM
OEM: 335-1068, Item: 694115
  Only 1 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 8237603MPA
2001-2002 GMC Sierra 2500 HD MPA Alternator 8237603
131.85, Save 39%, Core: $ 43.00   NEW ITEM
OEM: 8237603, Item: 1395962
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 8247603MPA
2001-2005 GMC Sierra 2500 HD MPA Alternator 8247603
131.85, Save 39%, Core: $ 43.00   NEW ITEM
OEM: 8247603, Item: 1395966
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8730NBosch
2001-2002 GMC Sierra 2500 HD Bosch Alternator AL8730N
132.45, Save 39%   NEW ITEM
OEM: AL8730N, Item: 582555
  Only 4 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 91614Remy
2007-2014 GMC Sierra 2500 HD Remy Alternator 91614
134.55, Save 39%   NEW ITEM
OEM: 91614, Item: 637608
  Only 3 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 91654Remy
2006 GMC Sierra 2500 HD Remy Alternator 91654
134.55, Save 39%   NEW ITEM
OEM: 91654, Item: 668235
  Only 2 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 2-11234/211234TYC
2007-2011 GMC Sierra 2500 HD TYC Alternator 2-11234
135.55, Save 39%   NEW ITEM
OEM: 2-11234, Item: 656004
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 210-5381/2105381Denso
2007-2014 GMC Sierra 2500 HD Denso Alternator 210-5381
139.05, Save 39%, Core: $ 14.00   NEW ITEM
OEM: 210-5381, Item: 1285993
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Alternator, OEM: 335-1086/3351086ACDelco
2001-2005 GMC Sierra 2500 HD ACDelco Alternator 335-1086
142.45, Save 39%   NEW ITEM
OEM: 335-1086, Item: 894730
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 91653Remy
2001-2005 GMC Sierra 2500 HD Remy Alternator 91653
144.35, Save 39%   NEW ITEM
OEM: 91653, Item: 637612
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2491A/3342491AACDelco
2001-2005 GMC Sierra 2500 HD ACDelco Alternator 334-2491A
145.25, Save 39%, Core: $ 10.00   NEW ITEM
OEM: 334-2491A, Item: 888958
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 8302603MPA
2005-2008, 2010 GMC Sierra 2500 HD MPA Alternator 8302603
146.95, Save 39%, Core: $ 28.00   NEW ITEM
OEM: 8302603, Item: 1395983
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2481A/3342481AACDelco
2001-2002 GMC Sierra 2500 HD ACDelco Alternator 334-2481A
148.65, Save 39%, Core: $ 15.00   NEW ITEM
OEM: 334-2481A, Item: 894686
  Only 5 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2529A/3342529AACDelco
2003-2007 GMC Sierra 2500 HD ACDelco Alternator 334-2529A
148.75, Save 39%, Core: $ 14.00   NEW ITEM
OEM: 334-2529A, Item: 888963
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 15732MPA
2007-2014 GMC Sierra 2500 HD MPA Alternator 15732
152.55, Save 39%, Core: $ 15.00   NEW ITEM
OEM: 15732, Item: 1395860
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8515XBosch
2003-2006 GMC Sierra 2500 HD Bosch Alternator AL8515X
155.25, Save 39%, Core: $ 15.00   NEW ITEM
OEM: AL8515X, Item: 1173978
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 335-1090/3351090ACDelco
2005 GMC Sierra 2500 HD ACDelco Alternator 335-1090
156.55, Save 39%   NEW ITEM
OEM: 335-1090, Item: 894733
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8782NBosch
2005-2006 GMC Sierra 2500 HD Bosch Alternator AL8782N
156.95, Save 39%  
OEM: AL8782N, Item: 950419
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 210-5384/2105384Denso
2006-2007 GMC Sierra 2500 HD Denso Alternator 210-5384
160.65, Save 39%, Core: $ 16.00   NEW ITEM
OEM: 210-5384, Item: 1497736
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 335-1196/3351196ACDelco
2007-2014 GMC Sierra 2500 HD ACDelco Alternator 335-1196
169.75, Save 39%   NEW ITEM
OEM: 335-1196, Item: 894743
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8731NBosch
2001-2002 GMC Sierra 2500 HD Bosch Alternator AL8731N
170.05, Save 39%   NEW ITEM
OEM: AL8731N, Item: 950417
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2732A/3342732AACDelco
2006-2007 GMC Sierra 2500 HD ACDelco Alternator 334-2732A
170.75, Save 39%, Core: $ 24.00   NEW ITEM
OEM: 334-2732A, Item: 888969
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2747A/3342747AACDelco
2005-2008, 2010 GMC Sierra 2500 HD ACDelco Alternator 334-2747A
172.55, Save 39%, Core: $ 16.00   NEW ITEM
OEM: 334-2747A, Item: 888971
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8730XBosch
2001-2002 GMC Sierra 2500 HD Bosch Alternator AL8730X
174.65, Save 39%, Core: $ 35.00   NEW ITEM
OEM: AL8730X, Item: 950416
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2742A/3342742AACDelco
2007-2014 GMC Sierra 2500 HD ACDelco Alternator 334-2742A
179.55, Save 39%, Core: $ 22.00   NEW ITEM
OEM: 334-2742A, Item: 888970
  Only 5 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 15499MPA
2006-2007 GMC Sierra 2500 HD MPA Alternator 15499
180.75, Save 39%, Core: $ 55.00   NEW ITEM
OEM: 15499, Item: 1395805
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 335-1092/3351092ACDelco
2001-2002 GMC Sierra 2500 HD ACDelco Alternator 335-1092
181.25, Save 39%   NEW ITEM
OEM: 335-1092, Item: 894735
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 334-2811A/3342811AACDelco
2013-2014 GMC Sierra 2500 HD ACDelco Alternator 334-2811A
182.75, Save 39%, Core: $ 10.00   NEW ITEM
OEM: 334-2811A, Item: 1466282
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 11234MPA
2007-2014 GMC Sierra 2500 HD MPA Alternator 11234
192.15, Save 39%, Core: $ 43.00   NEW ITEM
OEM: 11234, Item: 1411202
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8813NBosch
2007-2014 GMC Sierra 2500 HD Bosch Alternator AL8813N
196.25, Save 39%   NEW ITEM
OEM: AL8813N, Item: 582558
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 22817847ACDelco
2006 GMC Sierra 2500 HD ACDelco Alternator 22817847
205.75, Save 39%   NEW ITEM
OEM: 22817847, Item: 897898
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 22817848ACDelco
2007-2014 GMC Sierra 2500 HD ACDelco Alternator 22817848
215.25, Save 39%   NEW ITEM
OEM: 22817848, Item: 897899
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 20881337ACDelco
2007-2014 GMC Sierra 2500 HD ACDelco Alternator 20881337
229.15, Save 39%   NEW ITEM
OEM: 20881337, Item: 1347532
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8787XBosch
2005-2006 GMC Sierra 2500 HD Bosch Alternator AL8787X
236.05, Save 39%, Core: $ 30.00   NEW ITEM
OEM: AL8787X, Item: 1438408
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8813XBosch
2007-2014 GMC Sierra 2500 HD Bosch Alternator AL8813X
238.75, Save 39%, Core: $ 40.00   NEW ITEM
OEM: AL8813X, Item: 1438409
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: AL8782XBosch
2005-2006 GMC Sierra 2500 HD Bosch Alternator AL8782X
247.35, Save 39%, Core: $ 40.00   NEW ITEM
OEM: AL8782X, Item: 1438407
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 22781131ACDelco
2006 GMC Sierra 2500 HD ACDelco Alternator 22781131
251.25, Save 39%   NEW ITEM
OEM: 22781131, Item: 897886
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 19118692ACDelco
2006 GMC Sierra 2500 HD ACDelco Alternator 19118692
286.35, Save 39%   NEW ITEM
OEM: 19118692, Item: 897298
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 321-2104/3212104ACDelco
2001-2003 GMC Sierra 2500 HD ACDelco Alternator 321-2104
309.25, Save 39%, Core: $ 19.00   NEW ITEM
OEM: 321-2104, Item: 894621
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 25877026ACDelco
2007-2014 GMC Sierra 2500 HD ACDelco Alternator 25877026
312.75, Save 39%   NEW ITEM
OEM: 25877026, Item: 898478
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 321-2108/3212108ACDelco
2003-2005 GMC Sierra 2500 HD ACDelco Alternator 321-2108
325.75, Save 39%, Core: $ 19.00   NEW ITEM
OEM: 321-2108, Item: 888840
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 321-2128/3212128ACDelco
2003-2006 GMC Sierra 2500 HD ACDelco Alternator 321-2128
347.55, Save 39%, Core: $ 22.00   NEW ITEM
OEM: 321-2128, Item: 888845
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 321-2122/3212122ACDelco
2001-2002 GMC Sierra 2500 HD ACDelco Alternator 321-2122
358.15, Save 39%, Core: $ 22.00   NEW ITEM
OEM: 321-2122, Item: 894622
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 321-2123/3212123ACDelco
2001-2002 GMC Sierra 2500 HD ACDelco Alternator 321-2123
359.15, Save 39%, Core: $ 22.00   NEW ITEM
OEM: 321-2123, Item: 894623
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

ACDelco
2015-2018 GMC Sierra 2500 HD ACDelco Alternator 84143539
369.65, Save 39%   NEW ITEM
OEM: 84143539, Item: 1497365
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Alternator, OEM: 335-1236/3351236ACDelco
2006 GMC Sierra 2500 HD ACDelco Alternator 335-1236
168.85, Save 39%   NO STOCK
OEM: 335-1236, Item: 894747
  Restock date not known
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ACDelco
2015-2018 GMC Sierra 2500 HD ACDelco Alternator 84143543
251.15, Save 39%   NO STOCK
OEM: 84143543, Item: 1422381
  Restock date not known
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Auxiliary