How much does it cost to replace an alternator in a GMC Envoy?

The average cost for a GMC Envoy alternator replacement is between $572 and $590. Labor costs are estimated between $70 and $89 while parts are priced at $501.

How much is a alternator for a 2003 Envoy?

We currently carry 8 Alternator products to choose from for your 2003 GMC Envoy, and our inventory prices range from as little as $141.99 up to $217.99.

How do you change the alternator on a car?

Changing the alternator on most cars is generally the same. Find the alternator (has to be connected to the serpentine belt), and then look up steps to replace it. The main difference in cars is where the alternator is and how it’s mounted.

Do you need to remove serpentine belt to change alternator?

As you loosen the bolts, the alternator will slide in the bracket under the tension of the belt. You may not need to remove the serpentine or accessory belt if it’s not damaged.

How can I tell if my alternator has an auto tensioner?

You can tell if your vehicle uses an auto-tensioner by looking at the alternator mounting bracket: if the bolts can slide from side to side in the bracket, it does not have an auto-tensioner. You will need to slide the belt off the alternator pulley before you release the auto-tensioner.

What can I use to relieve tension on alternator belt?

Relieve tension on the belt with the auto-tensioner (if equipped). Some vehicles use the alternator itself to apply tension to the serpentine or accessory belt, but others use an auto tensioner pulley.

How does the alternator work on a GMC Envoy?

How Your Envoy’s Alternator Works The alternator’s job in your Envoy is to provide electricity as it is running. The battery stores enough voltage to be able to start the engine without the assistance of an alternator. It is turned by a serpentine belt.

What’s the best way to replace an alternator?

If you find any of those issues, you’ll need to replace it. Remove the alternator from the engine bay. With the belt pulled off of the alternator pulley and the wires disconnected, the alternator should come out freely. You may need to wiggle the alternator around some things in order to remove it.

As you loosen the bolts, the alternator will slide in the bracket under the tension of the belt. You may not need to remove the serpentine or accessory belt if it’s not damaged.

What are the symptoms of a bad alternator?

Outside of the battery warning light, a dead battery is the most common symptom of a bad alternator. As the alternator can no longer supply your Envoy with an adequate power supply, it will begin to feed off of the reserve in the battery.