How to replace the alternator (LY7) on Buick LaCrosse?

The first step to replace the generator (LY7) requires removal of the Drive Belt from the generator and disconnection of the battery negative cable. First support the vehicle with jack stands before you disconnect both the electrical connector and generator from its system. Access the generator outlet bat terminal by relocating its protective boot and removing the generator output bat terminal nut so you can disconnect the battery positive lead. The generator installation process starts by removing lower bolts then lowering the vehicle before the final removal step of the generator upper bolt. Position the generator on the engine first then mount the generator upper bolt for installation. Support the vehicle through its lift position while tightening lower generator bolts to a torque setting of 50 n.m (37 lb ft). Use a 10 n.m (89 lb in) torque wrench to tighten the battery positive lead between the generator and bat terminal then install the bat terminal boot. Before lowering the vehicle the generator's electrical connector must be connected followed by Drive Belt installation to the generator and lastly negative Battery Cable reinstallation.

OEM Buick LaCrosse Alternator

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10 Alternators found

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Buick LaCrosse Alternator
Part Number: 13507126
$193.01 MSRP: $383.12
You Save: $190.11 (50%)
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Product Specifications
- Other Name: Generator Assembly
- Replaced by: 13553838
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Alternator
Part Number: 24288797
$708.16 MSRP: $1119.26
You Save: $411.10 (37%)
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Product Specifications
- Other Name: Generator, Engine Electrical
- Replaces: 24283459, 24288787, 24288814
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Alternator
Part Number: 84009360
$427.58 MSRP: $848.72
You Save: $421.14 (50%)
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Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 15139480
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
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Buick LaCrosse Alternator
Part Number: 13597244
$197.14 MSRP: $356.81
You Save: $159.67 (45%)
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Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 13500316
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Buick LaCrosse | CX, CXL | 4 Cyl 2.4 L GAS
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Buick LaCrosse Alternator
Part Number: 13520809
$193.01 MSRP: $383.12
You Save: $190.11 (50%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly-.; Generator, Engine Electrical
- Replaced by: 13553838
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Alternator
Part Number: 13520825
$219.92 MSRP: $485.01
You Save: $265.09 (55%)
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Product Specifications
- Other Name: Generator Assembly-.; Generator, Engine Electrical
- Replaces: 13597235, 13502585, 13586975, 13588312
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Generator
Part Number: 24266687
$643.67 MSRP: $823.00
You Save: $179.33 (22%)
Product Specifications
- Other Name: Generator, Engine Electrical; Alternator
- Replaces: 24261691
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 Buick LaCrosse | Base, Convenience, Leather, Premium, Touring | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.6 L FLEX
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Buick LaCrosse Alternator
Part Number: 20757890
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 10366269, 15208916
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Alternator
Part Number: 15208915
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
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Buick LaCrosse Alternator
Part Number: 10366268
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS

Buick LaCrosse Alternator

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Buick LaCrosse Alternator Parts Questions & Experts Answers

Alternator
20757890
Q: How to replace the alternator (LY7) on Buick LaCrosse?
A: The first step to replace the generator (LY7) requires removal of the Drive Belt from the generator and disconnection of the battery negative cable. First support the vehicle with jack stands before you disconnect both the electrical connector and generator from its system. Access the generator outlet bat terminal by relocating its protective boot and removing the generator output bat terminal nut so you can disconnect the battery positive lead. The generator installation process starts by removing lower bolts then lowering the vehicle before the final removal step of the generator upper bolt. Position the generator on the engine first then mount the generator upper bolt for installation. Support the vehicle through its lift position while tightening lower generator bolts to a torque setting of 50 n.m (37 lb ft). Use a 10 n.m (89 lb in) torque wrench to tighten the battery positive lead between the generator and bat terminal then install the bat terminal boot. Before lowering the vehicle the generator's electrical connector must be connected followed by Drive Belt installation to the generator and lastly negative Battery Cable reinstallation.

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