Broken Arrow (1996).

You might suspect that AM General bought the vehicle product-placement position on this movie from the Hummers that feature in it, but Stan Serr [writes in] that this is not the case.

[picture from Broken Arrow, Hummer, Travolta, jpg]

AM General's New Test Driver.

A broken arrow is a lost thermo-nuclear device - oops, sorry! Actually there are two such devices (very sorry) and they are stolen by a renegade US pilot (John Travolta), not lost as such.

The good guys are going to get the bombs back which provides lots of opportunities for chase scenes with fast machinery in and around Utah's canyons. Is it a plane, is it a train, is it a car - yes to all of the above.
- 4wd.sofcom.com/Films/Movies.html

From the Internet Movie Database:

Vic Deakins - John Travolta
Riley Hale - Christian Slater
Terry Carmichael - Samantha Mathis
Hummers manufactured by A.M.General
Directed by - John Woo
Produced by - Bill Badalto, Terence Chang, Mark Gordon

Fox Columbia Tristar -->

Go to the 4WD movie page

Trivia:

... when John shoots the "good guys" Hummer, the gas tanks leak. It was not the gas tank that was shot, but the floor board! The gas tanks are in the center of the body, for more protection against side impacts (and bullets).
- Thomas Fritz ['97]