2008 Hummer H2 Service & Repair Manual

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The service and repair manual for the 2008 Hummer H2 — the 6.2L V8 engine, 5 trims. Matched to this exact model year, so the specifications and sequences are the ones Hummer published for your car, not figures carried over from a neighbouring year.

01 / FitmentWhat this manual covers

Model year2008
Engines
6.2L V8 — 376 cu in, OHV
TrimsAdventure Crew Cab Pickup 4-Door · Base Crew Cab Pickup 4-Door · Base Sport Utility 4-Door · Luxury Sport Utility 4-Door · Adventure Sport Utility 4-Door
Federal record2 recalls · 10 complaints · 317 technical service bulletins (refreshed 2026-08-21)

02 / InsideSample pages from the 2008 H2 manual

2008 Hummer H2 service manual page 12008 Hummer H2 service manual page 22008 Hummer H2 service manual page 32008 Hummer H2 service manual page 42008 Hummer H2 service manual page 52008 Hummer H2 service manual page 6

03 / ContentsSections in the manual

  • Quick Lookups 593
  • General Information 1,789
  • Accessories & Equipment 4,506
  • Heating, Ventilation & A/C (HVAC) 259
  • Body & Frame 1,794
  • Maintenance 15
  • Brakes 744
  • Restraints 278
  • Drivelines & Axles 326
  • Steering 142
  • Electrical 2,543
  • Suspension 492
  • Engine Mechanical 681
  • Transmission 1,498
  • Engine Performance 2,148
  • Front 173
  • Pa at 1,000

04 / Known issuesRecalls on federal record for the 2008 H2

  1. Electrical System · 08V441000
    This may cause other electrical features to malfunction, create an odor, or cause smoke increasing t.
  2. Electrical System · 10V240000
    It is possible for the heated washer module to ignite and a fire may occur.

Owners have filed 10 complaints and Hummer has issued 317 technical service bulletins for the 2008 H2. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.

FAQQuestions about the 2008 H2 manual

Is this manual specific to the 2008 H2?

Yes. It is the OEM manual matched to the 2008 model year, covering the 6.2L V8 across the Adventure Crew Cab Pickup 4-Door, Base Crew Cab Pickup 4-Door, Base Sport Utility 4-Door, Luxury Sport Utility 4-Door, Adventure Sport Utility 4-Door trims. Specifications and procedure sequences are the ones Hummer published for this year.

What 2008 H2 problems does it help with?

2 recalls are on federal record for the 2008 H2, covering electrical system. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Hummer dealers.

Does it include 2008 H2 wiring diagrams?

Yes — the complete wiring diagrams for the 2008 build, alongside repair procedures, specifications and diagnostics.

Is it a subscription?

No. $29.99 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 H2 years and 2008 Hummer models

2009 H2 · 2007 H2 · 2006 H2 · 2005 H2 · 2004 H2 · 2003 H2 · all 7 years

2008 Hummer H3 · every 2008 model