Repair manual
Wiring diagrams
GMC Sierra III facelift Repair Manual
Step-by-step repair and maintenance instructions for the GMC Sierra III facelift (2015–2018): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Parasitic Load Explanation & Test Procedures - General Information
- Waveforms - Injector Pattern Tutorial - General Information
- Electrostatic Discharge Warning - General Information
- State Emission Standards - Diesel