How to replace the alternator in a 4.3L engine on 2007 GMC Sierra 1500?

Removal of air cleaner outlet resonator and negative battery cable disconnection will replace the generator in a 4.3L engine. Unbolt the drive belt and unbolt the A/C compressor and unscrew the engine wiring harness. Take out the previous generator bolts, rearrange hoses and fit the new generator. Re-connect everything and battery cable.

OEM 2007 GMC Sierra 1500 Alternator

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5 Alternators found

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2007 GMC Sierra 1500 Alternator Part Number: 19244751
$309.77 MSRP: $604.07
You Save: $294.30 (49%)
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Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 10464476, 15200109, 15263859, 20989650, 22781130, 19151921
- Item Weight: 17.00 Pounds
- Item Dimensions: 9.2 x 7.8 x 7.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19244751
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 GMC Sierra 1500 Submodels:
- Base, Denali, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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2007 GMC Sierra 1500 Alternator Part Number: 20881337
$272.93 MSRP: $541.76
You Save: $268.83 (50%)
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Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 15905874, 25869451, 15905872, 22781127, 25968616
- Item Weight: 16.50 Pounds
- Item Dimensions: 10.5 x 10.4 x 10.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 20881337
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 GMC Sierra 1500 Submodels:
- Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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2007 GMC Sierra 1500 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
- Item Weight: 16.30 Pounds
- Item Dimensions: 9.3 x 8.2 x 7.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 22781131
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 1500 Submodels:
- Denali, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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2007 GMC Sierra 1500 Alternator Part Number: 25877026
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 15857608, 15905871
- Item Weight: 19.80 Pounds
- Item Dimensions: 9.6 x 8.1 x 8.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25877026
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 1500 Submodels:
- Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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2007 GMC Sierra 1500 Alternator Part Number: 15263858
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 10392759
- Item Weight: 16.40 Pounds
- Item Dimensions: 9.2 x 8.1 x 7.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15263858
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 1500 Submodels:
- Denali, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS

2007 GMC Sierra 1500 Alternator

With a comprehensive array of OEM 2007 GMC Sierra 1500 Alternator, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2007 GMC Sierra 1500 Alternator are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2007 GMC Sierra 1500 Alternator Parts and Q&A

Q: How to replace the alternator in a 4.3L engine on 2007 GMC Sierra 1500?
A: Removal of air cleaner outlet resonator and negative battery cable disconnection will replace the generator in a 4.3L engine. Unbolt the drive belt and unbolt the A/C compressor and unscrew the engine wiring harness. Take out the previous generator bolts, rearrange hoses and fit the new generator. Re-connect everything and battery cable.