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Production Automotive Services

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Title: Production Automotive Services  
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Subject: GMC vehicles, GMC Typhoon, Pontiac vehicles
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Production Automotive Services

PAS Inc.
Industry Automotive
Founded 1989
Defunct 1994
Headquarters Troy, Michigan
Van Nuys, California
, United States
Area served
  • North America
  • Middle East
Key people
  • Jeff Beitzel
  • Scott Kelly
  • Mack King
  • John Koss
  • Jim Stokes
Products Automobiles

Production Automotive Services, Inc. (commonly referred to as PAS) and formally known as Prototype Automotive Services, was a specialty vehicle manufacturer which produced the 1989 Pontiac Turbo Trans Am, the 1991 GMC Syclone, the 1992 GMC Sonoma GT and the 1992 - 1993 GMC Typhoon. These were the only projects PAS created with General Motors before closing its doors in 1994.


  • History 1
  • Products 2
    • Pontiac Turbo Trans Am (1989) 2.1
    • GMC Syclone (1991) 2.2
    • GMC Sonoma GT (1992) 2.3
    • GMC Typhoon (1992) 2.4
    • GMC Typhoon (1993) 2.5
  • References 3
  • External links 4


1989 marked the 20th Anniversary for Pontiac's flagship ponycar, the Trans Am, and Bill Owen at Pontiac Motor Division saw to it that it was a special one. Pontiac engineers originally wanted to use an all-aluminum V-8 engine in the TTA. That plan never materialized, so the 3.8L Intercooled Buick Turbo V-6 engine from the Buick Grand National was chosen and equip with cylinder heads from the existing 3800 Series I V-6, because of their increased clearance at the strut towers and superior flow.[1]

The contract to outfit the TTA engine was given to PAS Engineering in Van Nuys, CA and the work took place in its 40,000-square-foot City of Industry facility. After the engines were completed, they were shipped back to GM, installed in the cars and then returned to PAS for testing and quality-control checks, before being offered to the public for sale. Jeff Beitzel, who was the president of PAS, had his personal 20th Anniversary TTA (one of the 1,555) sent to American Specialty Cars (ASC) and made into a convertible.[1]

PAS also made other performance changes, which included the 1LE brake package originally engineered for Trans Am racecars. The setup featured vented 12-inch front and 11.7-inch rear rotors to ensure fade-free performance. The aluminum dual-piston front and single-piston rear calipers were borrowed from the Chevrolet Corvette.[2]

Throughout the project, Scott Kelly, who was the Engineering Liaison of PAS, was instrumental in the development and production of the TTA. Scott served as the go-between for PAS and General Motors throughout the program and was responsible for the all of the Trans Ams used during the month of May 1989, including the three actual pace cars. After the TTA program, Scott worked as the Service and Warranty Administrator for the TTA, GMC Syclone, Typhoon, Sonoma GT, and natural-gas-powered trucks, that PAS produced until 1994.[3]


Black/Black GMC Typhoon outside of PAS Inc.
Aspen/Grey '92 GMC Typhoon inside PAS Inc.
Prototype Chevy Syclone inside PAS Inc.

Pontiac Turbo Trans Am (1989)

Units Built : 1,555

  • 4 Pilot Cars with T-Top & Cloth Interior
  • 1 Pilot Cars with Hardtop & Leather Interior
  • 1,324 Production Cars with T-Top & Leather Interior
  • 187 Production Cars with T-Top & Cloth Interior
  • 24 Production Cars with Hardtop & Leather Interior
  • 15 Production Cars with Hardtop & Cloth Interior

GMC Syclone (1991)

Units Built : 2,998

  • 2,995 Production Syclones
  • 3 Syclones were built for the 1992 model year before being discontinued

GMC Sonoma GT (1992)

Units Built : 806

  • Black w/ Black (408 Total)
  • Black w/ Gray (41 Total)
  • Frost White w/ Gray (101 Total)
  • Apple Red w/ Gray (180 Total)
  • Bright Teal w/ Gray (48 Total)
  • Forest Green Metallic w/ Gray (14 Total)
  • Aspen Blue w/ Gray (14 Total)

GMC Typhoon (1992)

Units Built : 2,497

  • Black w/ Black (1262 Total)
  • Black w/ Gray (130 Total)
  • Frost White w/ Gray (518 Total)
  • Apple Red w/ Gray (345 Total)
  • Bright Teal w/ Gray (132 Total)
  • Forest Green Metallic w/ Gray (82 Total)
  • Aspen Blue w/ Gray (28 Total)
  • Radar Blue w/ Radar Blue (2 Total**)
  • Raspberry Metallic w/ Raspberry Metallic (2 Total**)

GMC Typhoon (1993)

Units Built : 2,200

  • Black w/ Black (1,008 Total)
  • Black w/ Gray (98 Total)
  • Frost White w/ White (532 Total***)
  • Frost White w/ Gray (115 Total)
  • Apple Red w/ Apple Red (77 Total)
  • Apple Red w/ Gray (101 Total)
  • Forest Green Metallic w/ Gray (210 Total)
  • Garnet Red w/ Gray (24 Total)
  • Royal Blue Metallic w/ Gray (35 Total***)

(***Includes 1 Radar Blue w/ Radar Blue)


  1. ^ a b >Thomas A. DeMauro. "1989 Pontiac Trans Am Turbo Pace Car - Indy Meets Daytona". Hot Rod Magazine. Retrieved August 8, 2006. 
  2. ^ >Jim McIlvaine. "Time Warp T/A". Hot Rod Magazine. Retrieved Oct 7, 2005. 
  3. ^ >"1st Annual 1989 Pontiac Trans Am Turbo Meet - The ’89 Pontiac Turbo Trans Am Reunion". High Performance Pontiac Magazine. 

External links

  • Syclone, Typhoon, Sonoma GT Database & History
  • '89 Turbo Trans Am History & Specs
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