General Motors — Accessory Drive Belt Replacement
Maintenance
From a General Motors owner's manual covering: 5.0L MPI, 5.0L MPI CES, 5.7L MPI, 5.7L MPI CES, 6.0L MPI, 6.0L MPI CES, 6.0LHO MPI CES, MP 5.0L, MP 5.7L, MP 6.0L. Check it applies to your exact model before use.
Before you start
- Release tensioner slowly to prevent it snapping against its stop and causing damage
Procedure
- Note the routing of the belt before removing
- Use a 15 mm box wrench to turn belt tensioner to relieve tension
- Slide belt off pulleys; release tensioner slowly
- Slide new belt onto pulleys using the same routing
- Compress belt tensioner and slide belt over tensioner pulley
- Release the tension slowly to tension the belt
Tools required
- 15 mm box wrench or socket Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 6.0L SERPENTINE BELT #: R066033
- 5.0/5.7L SERPENTINE BELT (LH) #: R066028 Amazon eBay $70.79
- 5.0/5.7L SERPENTINE BELT (RH) #: R066029A
Source: General Motors owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.