1991 GMC Syclone 1/2 Ton

2dr Pickup

6-cyl. 262cid/280hp Turbo

#1 Concours condition#1 Concours
#2 Excellent condition#2 Excellent
#3 Good condition#3 Good

$45,500 CAD*

+8.3%
#4 Fair condition#4 Fair
Value Graph07/2410/2401/25$10k$20k$30k$40kApr 2025
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1991-1992 GMC Syclone stats
Highest sale
$143,894 CAD
Lowest sale
$7,347 CAD
Most recent sale
$58,878 CAD
Sales
135

Photos

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1991 GMC Syclone 1/2 Ton Pickup 4x4
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Model overview

Model description

Momentarily inspired to build a hot-rod pickup, GMC released the Syclone in 1991. Based on a Sonoma regular cab truck, GMC had Production Automotive Services heavily modify the Sonoma’s optional 4.3-liter V-6, most notably by adding a turbocharger and intercooler to boost power to 280 hp. Speculation runs rampant that true output was much higher. All-wheel drive helped put the power to the pavement, and a tuned suspension helped the truck better handle its newfound muscle.

The Syclone became the fastest pickup truck in the world upon its introduction, and the truck was actually quick by any standard. Enthusiast magazines recorded quarter-mile times in the 13s and blistering 0-60 times of 4.6 seconds, and pitted the Syclone against various sports cars of the day. The Syclone also lays claim to being the first production pickup truck to be outfitted with four-wheel anti-lock brakes.

Only 2,998 GMC Syclones were produced, 3 of which were 1992 models. All are menacingly blacked out, save for 2 of the 1992 models, and 10 Marlboro Syclones were modified as post-production contest giveaways, with these special editions wearing red paint and a Targa-style roof.

Today the GMC Syclone is popular among performance truck fans as it is one of the fastest production trucks to ever be produced. Marlboro Editions carry a big premium over standard Syclones due to their rarity, and documentation is mandatory for one of these unique models.

Vehicle specifications

  • Wheel Base Shortest - Inches108.3
  • Wheel Base Longest - Inches108.3
  • Shipping Weight4200
  • Drive TypeAWD
  • Manufacturer NameGeneral Motors
  • Truck Tonnage Rating1/2
  • Manufacturer MSRP25500
  • Truck Front AxleUnknown
  • Truck Rear AxleUnknown
  • Market SegmentationMid Size Pickup
  • Truck Gross Vehicle Weight Rating Code1
  • Manufacturer CodeC137
  • Truck Tonnage Rating CodeB

Equipment

  • StandardOptional
  • Transmission4 Speed Automatic
  • Power BrakesYes
  • Power SteeringYes
  • EntertainmentAM/FM CASS
  • Air ConditioningYes
  • Power WindowsYes
  • Tilt Steering WheelYes
  • Anti-Lock BrakingAll Wheel
  • Restraint typeActive (Manual) Belts
  • Security EquipmentNone

Equipment

Standard

  • Transmission4 Speed Automatic
  • Power BrakesYes
  • Power SteeringYes
  • EntertainmentAM/FM CASS
  • Air ConditioningYes
  • Power WindowsYes
  • Tilt Steering WheelYes
  • Anti-Lock BrakingAll Wheel
  • Restraint typeActive (Manual) Belts
  • Security EquipmentNone
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Common Questions

The value of a 1991 GMC Syclone 1/2 Ton can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $31,800 USD for a 1991 GMC Syclone 1/2 Ton in good condition with average spec.

The highest selling price of a 1991 GMC Syclone 1/2 Ton at auction over the last three years was $132,939 CAD. The highest prices are usually reserved for rare or exceptionally well-maintained examples with desirable features or modifications and excellent history.

The lowest selling price of a 1991 GMC Syclone 1/2 Ton at auction over the last three years was $26,147 CAD. The lowest prices are usually paid for examples that have extensive maintenance needs, differ greatly from their original configuration, or have accident histories or title problems.

In the last three years there have been 40 1991 GMC Syclone 1/2 Tons sold at public auction.

The most recent auction sale of a 1991 GMC Syclone 1/2 Ton was $58,878 CAD on April 08, 2025 by Bring a Trailer.

Many factors can increase a car's value including excellent condition, exceptional originality, a recent restoration, low mileage, unique provenance, desirable options, popular or unique color choices, and excellent maintenance records. Upgrades and modifications that enhance performance or aesthetics can also add value.

Factors that can decrease a car's value include unusually high mileage, poor maintenance history, visible wear and tear, accidents or damage, title issues, and gaps in ownership history. Additionally, less popular color choices and extensive modifications that don't appeal to a broad audience can reduce value.

Mileage plays a significant role in a classic car’s value. Lower mileage usually increases value because it indicates a higher degree of originality, is rarer, and suggests less wear and tear. However, cars with exceptionally low mileage may also have maintenance needs due to lack of use. Whether someone should pay more for a vehicle with lower miles will depend on how they plan on using it, and the vehicle's specific condition.

The value of modified cars differs widely based on the type and quality of modifications. While some modifications can significantly increase value, especially performance enhancements and high-quality custom work, others may not add much or could even detract from the car’s value if they appeal to only a limited audience.

All prices shown here are representative of stock condition vehicles only and based on various data sources, as detailed in About Our Prices. Value adjustments for optional equipment are in U.S. dollars. More information on how forecast models are calculated can be found on Forecasted Values page. For additional information and a complete description of benefits, visit hagerty.CA/legal. Purchase of insurance not required for membership in HDC. Hagerty, Hagerty Valuation Tools & Hagerty Drivers Club are registered trademarks of the Hagerty Group LLC, ©2025 The Hagerty Group, LLC. All Rights Reserved.