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How to Replace an Alternator in a 2001 Chevy Truck

Replacing the alternator in your Chevy truck may become necessary if the original quits or starts to show signs or failure. If you are not sure that the alternator is failing, removing it from the truck will allow you to bench-test the unit and determine without question if that is where your issue lies. If the alternator is faulty, replace it with a new or remanufactured unit, available from any auto-parts store or through the Chevy dealers parts department.

Instructions

1

Remove the retaining bolt from the negative battery cable end with a wrench, then remove the cable from the negative battery terminal. Isolate the cable from the battery by setting it off to the side where it cannot fall back against the battery.

2

Place a socket and breaker bar on the axis bolt in the center of the serpentine belt tensioner pulley. Rotate the tensioner counterclockwise and then slide the belt off the alternator pulley.

3

Locate the electrical connections on the rear of the alternator. Remove the nut from the "B" terminal with a wrench, then slide the battery cable off the terminal. Disconnect the plug in the connector from the body of the alternator by pressing the locking tab, then pulling the connector out of the alternator body.

4

Locate the two mounting bolts at the bottom of the alternator. Remove both bolts using a socket and ratchet, then lift the alternator off the bracket. Position a new alternator onto the mounting bracket, install the two mounting bolts and torque them to 37 foot-pounds with a torque wrench.

5

Install the electrical connections on the rear of the alternator. Plug the push-in connection to the socket on the alternator body and install the battery cable onto the "B" terminal. Torque the nut to 13 foot-pounds with a torque wrench.

6

Slide the serpentine belt onto the alternator pulley, then rotate the tensioner clockwise with a socket and breaker bar, tightening the belt. Install the negative battery cable onto the negative battery terminal. Install the retaining bolt on the terminal and tighten it with a wrench.