Hummer Service History, made simple

General Motors wound Hummer down around 2010, so there has been no manufacturer support behind the badge for well over a decade. That rules out any straightforward factory record request.

Rebuilding a Hummer service history therefore relies on the specialists and importers who handled these vehicles, since there is no dealer network left to ask.

The H2 and H3 were sold here in small numbers through importers and a few dealers, while the H1 was only ever an import. Volumes were so low that franchised records were always thin on the ground.

The first step is working out whether your Hummer was UK-supplied or imported, because that decides whether any British dealer paperwork exists at all.

Hummers are large, thirsty and mechanically unusual, so owners tend to use American-vehicle and off-road specialists who know their engines, transmissions and heavy-duty running gear.

These workshops keep careful invoices, and for most Hummers they are the main source of a usable service history, covering routine servicing as well as the modifications many owners fit.

A large share of UK Hummers are left-hand-drive grey imports that came in with US documentation. That paperwork rarely enters a UK system, so the earlier history can be hard to confirm.

Where the original records survive, we start there and add UK MOTs and specialist invoices to trace the vehicle's life since it arrived.

For a Hummer that has been UK-registered long enough, the MOT record gives dependable mileage and advisory notes at each test, often the most complete run of evidence available.

Lining those mileages up with invoices confirms a recovered Hummer service history is genuine and consistent, and shows up any periods that are unaccounted for.

Given how long the brand has been gone and how few were sold here, some Hummer histories cannot be fully rebuilt, above all the overseas years of an import.

We will pursue every credible source and put together an honest file, and be clear about which parts of your Hummer service history are documented and which are still gaps.