2012 Chevrolet Suburban 2500 Service and Repair Manual

This factory service and repair manual for the 2012 Chevrolet Suburban 2500 has two flex-fuel V8s to separate rather than one: the naturally aspirated 5.3L of 325 cubic inches and the naturally aspirated 6.0L of 364 cubic inches, both overhead-valve. They share a single four-door sport utility body and three trims, Base, LS and LT. The smaller displacement brings its own specifications, clearances and torque values, and the manual keeps them apart from the 6.0L material so nothing is applied to the wrong engine.

Engines covered

• 5.3L V8 (325 cu in) — OHV, naturally aspirated, flex-fuel
• 6.0L V8 (364 cu in) — OHV, naturally aspirated, flex-fuel

Body styles covered

• 4-door sport utility

Trims covered

• Base
• LS
• LT

Known issues on the 2012 Suburban 2500. Owners recorded 101 complaints against this model year. Air bags lead with 23, the structure follows at 19 and the electrical system at 10, a spread typical of a truck whose mechanical parts give less trouble than its supporting systems. The restraint diagnostics in this manual cover the sensing, wiring and module tests behind those air bag entries; the body sections give the panel, frame and hardware procedures with their torque figures; and the wiring diagrams carry every circuit needed to run down an electrical fault.