REX Mechanical(925) 517-3118

Peterbilt Repair & Service

Class 8 trucks and vocational chassis

REX Mechanical service truck with its body doors open beside a tracked excavator on a dirt jobsite

Same working role as the Kenworths and often the same fleets, but different cab electrical architecture — which matters when the fault is a harness rather than a component.

What we see most on Peterbilt

  • Cab and chassis harness fault tracing
  • Upfit integration — lighting, storage, hydraulics
  • PTO and body hydraulic systems
  • Charging and starting system diagnosis

Services that apply

Tell us the make, model and what it’s doing

That determines what goes on the truck — and it’s the difference between one visit and two.