How to Replace Alternator 02-08 Dodge Ram

Difficulty: Beginner · About 20 min · Dodge Ram

Replace the alternator on a 2002-2008 Dodge Ram.

Steps

1. Disconnect the battery

   Disconnect the negative cable with a 10mm wrench.

2. Remove the serpentine belt

   Familiarize yourself with its routing, insert a 3/8-inch drive ratchet into the tensioner, turn it clockwise to loosen the belt, then pull the belt off the alternator.

3. Remove the old alternator

   Disconnect its wiring harness, remove the power terminal connector's cover and 13mm nut, pull the power cable off, remove the two 15mm bolts at the bottom of the alternator, then pry it out with a flat blade screwdriver.

4. Install the new alternator

   Set it into place, install its two 15mm bottom bolts, reconnect the power cable and tighten the 13mm nut, refit the terminal cover, then reconnect the wiring harness.

5. Reinstall the serpentine belt

   Route it around the pulleys following the belt diagram, pull the tensioner clockwise with the 3/8-inch ratchet, pull the belt over the alternator, then release the tensioner.

6. Reconnect the battery

   Reconnect the negative cable with a 10mm wrench.

Check your vehicle’s repair manual for exact specifications and fit.