How to Replace Serpentine Belt 99-04 GMC Sonoma

Difficulty: Beginner · About 20 min · Gmc Sonoma

Replace the serpentine belt on a 1999-2004 GMC Sonoma.

Steps

1. Remove the old belt

   Familiarize yourself with the belt's routing, insert a 3/8-inch drive ratchet into the tensioner, turn it down to loosen the belt, pull the belt off the pulleys by hand, then release the tensioner.

2. Install the new belt

   Following the routing diagram, loop it around the crank pulley, the water pump, the power steering pulley, the A/C pulley, the alternator and the tensioner, insert the 3/8-inch drive ratchet into the tensioner and pull it down, pull the belt over the idler pulley, release the tensioner, then double check the routing.

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