How to replace the alternator on a 4.2L engine on GMC Envoy?

In order to change the generator of the car with 4.2l engine, first unhook the battery negative cable, then remove the Drive Belt. Then, remove the air conditioning (A/C) line mounting bracket bolt at the engine lift hook, and then remove the right engine lift hook bolts to pull off the lift hook. Subsequently, remove the 3 generator mounting bolts to pull out the generator and disconnect the battery positive cable nut on the generator. For install use the positive cable of battery with the generator and secure it with the nut tightening to 9 n.m (80 lb in). Mount the generator and fasten using 3 bolts that need to be tightened up to 50 n.m ( 37 lb ft). Retighten the engine lift hook bolts and attach the hook to the engine with 2 bolts and tighten them to the same firmness of 50 n.m (37 lb ft). Then, install the a/c line bracket to the lift hook, fixing it with the bolt, with a tightening force of 10 n.m (89 lb in). Lastly, replace the Drive Belt, and reconnect the battery negative terminal.

OEM GMC Envoy Alternator

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6 Alternators found

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GMC Envoy 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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy 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:
- 2006-2007 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy Alternator Part Number: 19244750
$352.73 MSRP: $688.06
You Save: $335.33 (49%)
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Product Specifications
- Other Name: Generator Assembly, (Remanufacture); Generator, Engine Electrical
- Replaces: 19151920, 10464468
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Alternator Part Number: 15225928
$249.93 MSRP: $455.23
You Save: $205.30 (46%)
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Product Specifications
- Other Name: Generator; Generator, Engine Electrical
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2009 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Alternator Part Number: 19118694
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Replaces: 15200110
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Alternator Part Number: 15225927
Product Specifications
- Other Name: Generator Assembly; Generator, Engine Electrical
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS

GMC Envoy Alternator

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Alternator is an important element of GMC Envoy that charges the automobile battery and powers all the electrical unit when the vehicle is on the road. Usually mounted at the front end of a car just behind the engine, an alternator is used to transform mechanical energy to electric energy and this electric energy that is produced is sent to different parts of the vehicle such as the battery. With this construction, the alternator uses a rotating magnetic field with a stationary armature to produce the required AC for recharging the battery and serving the car's electrical needs. Depending on the voltage regulation capability to avoid undercharging and overcharging circumstances, the alternator aids in supporting the car's electrical systems. For cases requiring high amperage charging capability the alternators are designed to meet higher electrical demands without straining the charging system of the vehicle.

GMC Envoy Alternator Parts Questions & Experts Answers

Alternator
22781131
Q: How to replace the alternator on a 4.2L engine on GMC Envoy?
A:
In order to change the generator of the car with 4.2l engine, first unhook the battery negative cable, then remove the Drive Belt. Then, remove the air conditioning (A/C) line mounting bracket bolt at the engine lift hook, and then remove the right engine lift hook bolts to pull off the lift hook. Subsequently, remove the 3 generator mounting bolts to pull out the generator and disconnect the battery positive cable nut on the generator. For install use the positive cable of battery with the generator and secure it with the nut tightening to 9 n.m (80 lb in). Mount the generator and fasten using 3 bolts that need to be tightened up to 50 n.m ( 37 lb ft). Retighten the engine lift hook bolts and attach the hook to the engine with 2 bolts and tighten them to the same firmness of 50 n.m (37 lb ft). Then, install the a/c line bracket to the lift hook, fixing it with the bolt, with a tightening force of 10 n.m (89 lb in). Lastly, replace the Drive Belt, and reconnect the battery negative terminal.