Skip to content

15128978 Genuine GM Alternator For Silverado Sierra Tahoe Yukon Escalade

P/N: 15128978 Manufactured by: GM
Original price $497.00 - Original price $497.00
Original price
$497.00
$497.00 - $497.00
Current price $497.00
3 in Stock
Condition: New
We accept:
  • PayPal
  • Venmo
Need help choosing the right part?Contact our support team
+1 828-705-1030
Monday – Saturday | 8:00 AM – 8:00 PM (EST)
2-3 Day Free Shipping
Return within 30-Days
Packed Ready to Ship
24/7 Expert Support
2-Year Warranty

Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More

Description

The 15128978 alternator is designed to generate electrical power and maintain battery charge while the engine is running. It provides consistent voltage to support vehicle electrical systems and ensures reliable performance across a wide range of GM truck and SUV applications.

Vehicle Compatibility

Year Vehicle Engine Trims
2008 GMC Yukon XL 1500 6.0L V8 - Gas SLE, SLT
2007 Chevrolet Silverado 1500 Classic 4.3L V6 / 4.8L / 5.3L / 6.0L Hybrid, LS, LT, SS, WT
2007 Chevrolet Silverado 1500 HD Classic 6.0L V8 - Gas LT
2007 Chevrolet Silverado 2500 HD Classic 6.0L / 6.6L Diesel / 8.1L LS, LT, WT
2007 Chevrolet Silverado 3500 Classic 6.0L / 6.6L Diesel / 8.1L LS, LT, WT
2007 GMC Sierra 1500 Classic 4.3L / 4.8L / 5.3L / 6.0L Denali, Hybrid, SL, SLE, SLT, WT
2007 GMC Sierra 1500 HD Classic 6.0L V8 - Gas SLE, SLT
2007 GMC Sierra 2500 HD Classic 6.0L / 6.6L Diesel / 8.1L SL, SLE, SLT, WT
2007 GMC Sierra 3500 Classic 6.0L / 6.6L Diesel / 8.1L SL, SLE, SLT, WT
2007 GMC Yukon 4.8L V8 - Gas SLE
2006 Cadillac Escalade / ESV / EXT 6.0L V8 - Gas Base
2006 Chevrolet Avalanche 1500 5.3L V8 - Gas/Flex LS, LT, Z66, Z71
2006 Chevrolet Avalanche 2500 8.1L V8 - Gas LS, LT
2006 Chevrolet Silverado 1500 4.3L / 4.8L / 5.3L / 6.0L Hybrid, LS, LT, SS, WT
2006 Chevrolet Silverado 1500 HD 6.0L V8 - Gas LT
2006 Chevrolet Silverado 2500 HD 6.0L / 6.6L Diesel / 8.1L LS, LT, WT
2006 Chevrolet Silverado 3500 6.0L / 6.6L Diesel / 8.1L LS, LT, WT
2006 Chevrolet Suburban 1500 5.3L / 6.0L V8 Base, LS, LT, LTZ, Z71
2006 Chevrolet Suburban 2500 6.0L / 8.1L V8 LS, LT
2006 Chevrolet Tahoe 4.8L / 5.3L V8 Base, LS, LT, Z71
2006 GMC Sierra 1500 4.3L / 4.8L / 5.3L / 6.0L Denali, Hybrid, SL, SLE, SLT, WT
2006 GMC Sierra 1500 HD 6.0L V8 - Gas SLE, SLT
2006 GMC Sierra 2500 HD 6.0L / 6.6L Diesel / 8.1L SL, SLE, SLT, WT
2006 GMC Sierra 3500 6.0L / 6.6L Diesel / 8.1L SL, SLE, SLT, WT
2006 GMC Yukon / Yukon XL 1500 4.8L / 5.3L / 6.0L Denali, SL, SLE, SLT
2006 GMC Yukon XL 2500 6.0L / 8.1L V8 SLE, SLT
2005 Cadillac Escalade / ESV / EXT 5.3L / 6.0L V8 Base
2005 Chevrolet Avalanche 1500 5.3L V8 - Gas/Flex Base, LS, LT, Z66, Z71
2005 Chevrolet Silverado 1500 4.3L / 4.8L / 5.3L / 6.0L Base, LS, LT, SS
2005 Chevrolet Silverado 1500 HD 6.0L V8 - Gas Base, LS, LT
2005 Chevrolet Suburban 1500 5.3L V8 - Gas/Flex LS, LT, Z71
2005 Chevrolet Tahoe 4.8L / 5.3L V8 LS, LT, Z71
2005 GMC Sierra 1500 4.3L / 4.8L / 5.3L / 6.0L Base, Denali, SLE, SLT, WT
2005 GMC Sierra 1500 HD 6.0L V8 - Gas SLE, SLT
2005 GMC Yukon / Yukon XL 1500 4.8L / 5.3L / 6.0L Denali, SLE, SLT


General Specifications

Condition New
Part Number 15128978
Brand GM
Part Type Alternator
Years 2005–2008
Part Description Generator, Engine Electrical
Dimensions 17.4 x 17.8 x 9.3 inches
Weight 23.50 Pounds
Fitment Type Direct Replacement


Product Features

The 15128978 alternator is built to match factory performance and installation requirements:

  • Generates electrical power for vehicle systems during engine operation
  • Maintains proper battery charge across varying load conditions
  • Designed for direct-fit installation with OEM mounting points
  • Provides stable voltage output for factory electrical systems
  • Supports multiple GM V6 and V8 engine configurations
  • Integrates with factory wiring and charging system components

Application Notes

The 15128978 alternator is used across a wide range of GM trucks and SUVs equipped with gasoline and diesel engines listed above. Proper installation is required to ensure correct charging system operation and electrical reliability.

Always verify part number, engine type, and vehicle compatibility before installation.

Make an offer
Make an offer
Make an offer