How to Replace the Alternator on a Chevy S-10 Pickup

Written by john rose
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How to Replace the Alternator on a Chevy S-10 Pickup
Save money on labour charges and replace the alternator in the Chevy S10 pickup yourself. (Hemera Technologies/AbleStock.com/Getty Images)

Replacing the alternator in the Chevy S10 pickup is not difficult and you can easily replace it yourself. The cost of labour is very high, and in tough economic times, you need to cut corners where you can. The Chevy S10 alternator generates electricity and distributes it to the accessories and anywhere there is a need throughout the truck. The built-in voltage regulator keeps it from sending too much electricity throughout the pickup. The tools to complete the project are in most toolboxes. Someone with no automobile repair experience can finish this project in about an hour and a half.

Skill level:
Easy

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Things you need

  • Socket set
  • Wrench set

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Instructions

  1. 1

    Disconnect the negative battery cable using a wrench to loosen the terminal nut.

  2. 2

    Remove the bolt from the alternator brace at the engine block using a socket and ratchet. Remove the nut from the brace at the intake manifold using the socket and ratchet. Remove the stud from the brace and the engine using the socket and ratchet.

  3. 3

    Unplug the voltage regulator harness from the alternator. Disconnect the remaining wires using a wrench to remove the nuts.

  4. 4

    Loosen the belt tension by turning the adjusting bolt with the socket and ratchet and then pull the belt off the alternator. Inspect the belt for cracking and damage. Replace as necessary.

  5. 5

    Remove the alternator mounting bolts using the socket and ratchet and pull the alternator out of the truck.

  6. 6

    Put the new alternator in the truck and tighten the mounting bolts using the socket and ratchet. Place the belt on the alternator and tighten the tension by turning the adjusting bolt clockwise with the socket and ratchet. Replace the mounting bolt, nut and stud to the alternator bracket and tighten them with the socket and ratchet.

  7. 7

    Connect the electrical wires to the alternator and tighten the nuts with a wrench. Plug the voltage regulator harness into the alternator. Connect the battery terminal and tighten the nut with a wrench.

Tips and warnings

  • Be sure to disconnect the battery as instructed. Failure to do so is dangerous and could result in electrical shock.

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