How to replace an alternator on GMC Sierra 3500?

Begin the generator replacement process by disconnecting the negative Battery Cable and the generator electrical connector. Begin by sliding the generator cable boot downward to expose its terminal stud then remove the generator cable nut and detach the cable. The first step requires removal of the Drive Belt together with the generator bolts before extracting the generator. Place the generator in position then fasten it with the generator bolts until they reach 50 n.m (37 lb ft). First install the Drive Belt before attaching the generator cable by placing the cable on the generator first then tightening the generator cable nut to 9 n.m (80 lb in). Reinstall the boot over the terminal stud before connecting the generator electrical connector and then reconnecting the negative Battery Cable.

OEM GMC Sierra 3500 Alternator

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7 Alternators found

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GMC Sierra 3500 Alternator Part Number: 19244751
$309.77 MSRP: $604.07
You Save: $294.30 (49%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 10464476, 15200109, 15263859, 20989650, 22781130, 19151921
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 22781131
$271.79 MSRP: $599.42
You Save: $327.63 (55%)
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Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 19118686, 15847291, 94665137, 15222342, 15124532, 15222341, 15226003, 20989651
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Sierra 3500 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 19244746
$373.08 MSRP: $727.88
You Save: $354.80 (49%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 19151915, 10464453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Sierra 3500 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 15128978
$325.33 MSRP: $609.73
You Save: $284.40 (47%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Generator; Generator, Engine Electrical
- Replaces: 10371020
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Sierra 3500 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 19244731
$286.05 MSRP: $511.62
You Save: $225.57 (45%)
Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 19151898, 10464481
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 19244727
$172.06 MSRP: $298.21
You Save: $126.15 (43%)
Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 10464438, 19151893, 10464451, 10464404, 19151891
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Sierra 3500 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Alternator Part Number: 19353851
Product Specifications
- Other Name: Generator Assembly, .; Generator, Engine Electrical
- Replaces: 15845338, 15845337, 19118688, 19118692
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Sierra 3500 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS

GMC Sierra 3500 Alternator

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GMC Sierra 3500 Alternator Parts Questions & Experts Answers

Alternator
19244751
Q: How to replace an alternator on GMC Sierra 3500?
A:
Begin the generator replacement process by disconnecting the negative Battery Cable and the generator electrical connector. Begin by sliding the generator cable boot downward to expose its terminal stud then remove the generator cable nut and detach the cable. The first step requires removal of the Drive Belt together with the generator bolts before extracting the generator. Place the generator in position then fasten it with the generator bolts until they reach 50 n.m (37 lb ft). First install the Drive Belt before attaching the generator cable by placing the cable on the generator first then tightening the generator cable nut to 9 n.m (80 lb in). Reinstall the boot over the terminal stud before connecting the generator electrical connector and then reconnecting the negative Battery Cable.