The service and repair manual for the 2015 GMC Sierra — 5.3L V8 and 6.2L V8 engines, 6 trims. Matched to this exact model year, so the specifications and sequences are the ones GMC published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2015 |
|---|---|
| Engines | 5.3L V8 — 325 cu in, OHV 6.2L V8 — 376 cu in, OHV |
| Trims | SLT Crew Cab Pickup 4-Door · All Terrain Crew Cab Pickup 4-Door · Denali Crew Cab Pickup 4-Door · All Terrain Standard Cab Pickup 2-Door · SLE Crew Cab Pickup 4-Door · SLE Standard Cab Pickup 2-Door |
| Other 2015 Sierra variants | Sierra 1500 → · Sierra 2500 HD → · Sierra 3500 HD → |
| Federal record | 2 recalls · 67 complaints · 51 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2015 Sierra manual
03 / ContentsSections in the manual
- Quick Lookups 834
- General Information 2,075
- Accessories & Equipment 6,644
- Heating, Ventilation & A/C (HVAC) 449
- Body & Frame 1,787
- Brakes 899
- Restraints 364
- Drivelines & Axles 667
- Steering 359
- Electrical 4,431
- Suspension 403
- Engine Mechanical 1,199
- Transmission 1,403
- Engine Performance 3,787
- Front Wheel Drive Shaft to Front Hub Nut 188
04 / Known issuesRecalls on federal record for the 2015 Sierra
- Engine And Engine Cooling — exhaust system · 14V007000The overheated exhaust components may melt nearby plastic parts and may result in an engine fire.
- Electrical System — ignition · 15V640000If stuck in the "start" position, the ignition may suddenly snap back into the "accessory" position,.
Owners have filed 67 complaints and GMC has issued 51 technical service bulletins for the 2015 Sierra. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2015 Sierra manual
Is this manual specific to the 2015 Sierra?
Yes. It is the OEM manual matched to the 2015 model year, covering the 5.3L V8 and 6.2L V8 across the SLT Crew Cab Pickup 4-Door, All Terrain Crew Cab Pickup 4-Door, Denali Crew Cab Pickup 4-Door, All Terrain Standard Cab Pickup 2-Door, SLE Crew Cab Pickup 4-Door, SLE Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 2015 Sierra problems does it help with?
2 recalls are on federal record for the 2015 Sierra, covering engine and engine cooling, electrical system. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by GMC dealers.
Does it include 2015 Sierra wiring diagrams?
Yes — the complete wiring diagrams for the 2015 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $49.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther Sierra years and 2015 GMC models
2021 Sierra · 2020 Sierra · 2019 Sierra · 2018 Sierra · 2017 Sierra · 2016 Sierra · 2014 Sierra · 2013 Sierra · 2012 Sierra · 2011 Sierra · 2010 Sierra · 2009 Sierra · all 18 years
2015 GMC Acadia · 2015 GMC Canyon · 2015 GMC Savana 2500 · 2015 GMC Savana 3500 · 2015 GMC Savana 4500 · 2015 GMC Sierra 1500 · 2015 GMC Sierra 2500 HD · 2015 GMC Sierra 3500 HD · 2015 GMC Terrain · 2015 GMC Yukon · 2015 GMC Yukon XL · every 2015 model