The service and repair manual for the 2021 GMC Yukon XL — 5.3L V8 and 3.0L I6 and 6.2L V8 engines, 4 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 | 2021 |
|---|---|
| Engines | 5.3L V8 — 325 cu in, OHV 3.0L I6 — 183 cu in, DOHC, turbocharged 6.2L V8 — 376 cu in, OHV |
| Trims | SLE Sport Utility 4-Door · AT4 Sport Utility 4-Door · Denali Sport Utility 4-Door · SLT Sport Utility 4-Door |
| Other 2021 Yukon XL variants | Yukon → |
| Federal record | 5 recalls · 261 complaints · 1,220 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2021 Yukon XL manual
03 / ContentsSections in the manual
- Quick Lookups 940
- Engine Performance 3,113
- Accessories & Equipment 12,128
- General Information 2,085
- Body & Frame 5,199
- Heating, Ventilation & A/C (HVAC) 1,054
- Brakes 1,502
- Maintenance 16
- Restraints 660
- Drivelines & Axles 560
- Steering 446
- Electrical 5,553
- Suspension 477
- Engine Mechanical 2,198
- Transmission 1,354
- Loosen 45
04 / Known issuesRecalls on federal record for the 2021 Yukon XL
- Power Train — driveline › driveshaft · 22V036000Driveshaft failure can cause a sudden loss of drive power, increasing the risk of a crash.
- Seat Belts · 20V811000If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly rest.
- Fuel System, Gasoline — delivery › fuel pump › control/drive module · 21V739000An engine stall increases the risk of a crash.
- Seat Belts · 21V190000A damaged seat belt can break during a crash, increasing the risk of injury to the occupant.
- Seat Belts — critical fasteners · 22V617000A seat belt with a deformed rivet may not properly restrain an occupant, increasing the risk of inju.
Owners have filed 261 complaints and GMC has issued 1,220 technical service bulletins for the 2021 Yukon XL. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2021 Yukon XL manual
Is this manual specific to the 2021 Yukon XL?
Yes. It is the OEM manual matched to the 2021 model year, covering the 5.3L V8 and 3.0L I6 and 6.2L V8 across the SLE Sport Utility 4-Door, AT4 Sport Utility 4-Door, Denali Sport Utility 4-Door, SLT Sport Utility 4-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 2021 Yukon XL problems does it help with?
5 recalls are on federal record for the 2021 Yukon XL, covering power train, seat belts, fuel system, gasoline. 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 2021 Yukon XL wiring diagrams?
Yes — the complete wiring diagrams for the 2021 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 Yukon XL years and 2021 GMC models
2024 Yukon XL · 2023 Yukon XL · 2022 Yukon XL · 2020 Yukon XL · 2019 Yukon XL · 2018 Yukon XL · 2017 Yukon XL · 2016 Yukon XL · 2015 Yukon XL · all 10 years
2021 GMC Acadia · 2021 GMC Canyon · 2021 GMC Savana 2500 · 2021 GMC Savana 3500 · 2021 GMC Savana 4500 · 2021 GMC Sierra · 2021 GMC Sierra 1500 · 2021 GMC Sierra 1500 Limited · 2021 GMC Sierra 2500 HD · 2021 GMC Sierra 3500 HD · 2021 GMC Terrain · 2021 GMC Yukon · every 2021 model