Hummer

We list the factory service manuals for the two Hummer models most owners still drive: the H2 (2003 to 2009) and the H3 (2006 to 2010). Both are GM-built trucks with serious off-road hardware, so the factory procedures for the drivetrain, transfer case, suspension and electrical system are worth having.

Each manual covers one model year with the manufacturer's repair procedures, specifications, diagnostics and wiring diagrams. Choose the H2 or H3, then the year.