1991 GMC Typhoon Aspen Prototype

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The 1991 GMC Typhoon Aspen Prototype truck, like others, is a conversion made into a Typhoon before final production began.

Starting as a production 1991 GMC Jimmy 4×4, this truck was black and was purchased off a Michigan dealer lot by PAS (Production Automotive Services) where the conversion took place and then was used for promotional videos. Once it was deemed that PAS was going out of business, many prototypes they had in their possession were sold off. With only 148 miles on it, the truck was sold locally to a Michigan resident, then sold to an owner in Alabama, and finally sold a 3rd time in November 1997 to its current owner Jason Leach located in Crystal Lake, Illinois. The truck currently has around 3400 miles. It should be noted, that this truck WAS NOT the truck featured in the movie, Lethal Weapon 3. The truck in LW3 was a production truck, 1992 Typhoon #0404.

APPEARANCE INFORMATION

Some of the notable variances, differences and cosmetic details in this prototype include:

The door jams and firewall remain black. According to Jason, the paint is “pretty good” and was not done by GM. It it unclear if PAS painted the truck themselves or if it was done by a third party. The truck does have small amounts of aspen blue overspray on the undercarriage.
Set up as 2WD. Even though this was a 4×4 Jimmy, the propshaft was removed and the transfer case was locked into 2WD. Because the truck had an early production-style SyTy center console, there was no room for the 4×4 selector.
The truck has 4 dimples in the body from using interior screws that are too long. Three are above the windshield and 1 passenger side in front of the rear window.
No build sheet in the glove box, but has a GMC Jimmy GVWR sticker in the door jam.
92 Typhoon-style grill, door guards, and power mirrors.
91 Jimmy rear window (steel frame) and no rear wiper.
Rear windows are tinted very dark and there are cuts in glass on both sides of the rear windows.
The windshield washer bottle is 91 Jimmy.
Silver Typhoon decals and tailgate decals are in different locations.
Has no license plate lights.

INTERIOR INFORMATION

91 Jimmy seats, door panels, and steering wheel.
Has Typhoon style gauge cluster and gold Typhoon glove box decal (production 92s came with Silver, 93s with Gold).
Has a Typhoon center counsel but is mostly smooth and some very rough spots look like heat or chemical damage on the top.
The gear display has an orange tint (from a Corvette).
The rearview mirror has lights, but they do not work.
There are missing trim pieces under the dash with misc screws missing from the interior. The dash and side interior pieces appear to have been removed. The edge of rear interior pieces when looking from the open door have been cut and not repainted.
The gas pedal has an extra rod.
2 extra wires going to the DLC. Lots of extra wires going to the fuse box. Missing fuse box cover.
Has Cassette AM/FM radio with EQ.

MECHANICAL INFORMATION

Has different exhaust from production trucks
Wheels are highly polished and were hand-finished, not machine-finished like standard production wheels
Unknown PROM
Has no front prop shaft.
Shocks are painted black (believed to be GM).
Rear springs have #24 in yellow marker.
The gas tank has a large sump welded to the bottom.
Gas tank straps have large brackets welded hanging towards the ground.
Has Syclone rear end (ABS wires and backing plate flange are different).
Trans hump is painted gray primer.
Torsion Bar has a white index-style card with a red marker that reads unique part 6.5 R (left side reads L at the end)
Torsion Bars are the same length but measure 1.10″ in diameter. (93 Ty is 1.05″).
Front end 2″ lower than stock vehicles.
Motorcraft gas cap