The 1991 GMC Sierra 1500 is part of the fourth generation of GMC's full-size pickup truck, produced from 1988 to 1998. Available in various body styles including Regular Cab, Extended Cab, and a long-wheelbase option, this model year saw minor updates. Key trims often included the base model, SLE, and SLT. New pricing ranged from approximately $15,000 to $25,000. Its popularity stems from its robust build, dependable performance, and a classic, no-nonsense truck design that appealed to both work and personal use.
The Good
The 1991 Sierra 1500 offers rugged performance and renowned reliability, making it a practical choice. Its comfortable interior for its era and timeless design appeal to emotional attachments, while its overall value proposition and workhorse capability satisfy practical needs.
The Bad
Potential buyers should watch out for rust, particularly in the rocker panels and wheel wells. Aging electronics, such as climate control systems and power windows, can also develop issues. Transmission problems and engine wear are common concerns on higher-mileage examples.
1991 GMC Sierra 1500: Quick Overview
- Engine Options:
- 4.3L V6
- 5.0L V8
- 5.7L V8
- Horsepower:
- 4.3L V6: Approximately 160 hp
- 5.0L V8: Approximately 175 hp
- 5.7L V8: Approximately 210 hp
- Fuel Economy (Estimated):
- V6 models: Around 15-18 MPG city / 18-22 MPG highway
- V8 models: Around 13-16 MPG city / 16-20 MPG highway
- Note: Actual mileage varies significantly with driving conditions, maintenance, and engine choice.
- 0-60 Times (Estimated):
- V6 models: 10-12 seconds
- V8 models: 8-10 seconds
- Note: These are general estimates and can vary.
- Towing Capacity:
- Depending on configuration (engine, rear-end ratio, towing package), towing capacity could range from approximately 4,500 lbs to over 7,000 lbs.
- Trim-Level Features:
- Base Model: Standard equipment typically included vinyl seats, manual windows and locks, a basic AM/FM radio, and a durable interior.
- SLE (Sport/Luxury Edition): Often featured upgraded cloth or velour seating, power windows and locks, cruise control, tinted glass, and a more advanced sound system.
- SLT (Special Luxury Touring): Represented the top tier, offering premium features like leather seating (optional), automatic climate control, upgraded interior trim, alloy wheels, and potentially more robust sound systems.
- Common Features Across Trims (often optional): Air conditioning, tilt steering wheel, intermittent wipers, upgraded mirrors, and various bed liners or accessories.
1991 GMC Sierra 1500 Specifications
Vehicle Information
| Year | 1991 |
| Make | GMC |
| Model | Sierra 1500 |
| Trim | - |
| Style | Regular Cab 6.5-Foot Bed 2WD |
| Type | Pickup Truck |
| Category | Standard Pickup Truck |
Manufacturing Details
| Made In | Canada |
| Manufacturing City | OSHAWA TRUCK |
Dimensions
| Doors | 2-Door |
| Curb Weight | 3721 pounds |
| Gross Vehicle Weight Rating | 5600 pounds |
| Overall Height | 70.40 inches |
| Overall Length | 194.00 inches |
| Overall Width | 77.10 inches |
| Wheelbase Length | 117.50 inches |
| Standard Seating | 3 |
Engine & Performance
| Engine | 4.3L V6 |
| Engine Size | 4.3L |
| Engine Cylinders | 6 |
| Transmission | 4-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 4-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 2-Wheel ABS |
| Steering Type | Recirculating |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $13,639 |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1991 GMC Sierra 1500 Have?
The 1991 GMC Sierra 1500, while generally considered reliable, does have some commonly reported issues that owners should be aware of. One of the most persistent concerns, particularly for trucks of this age, isrust. Areas prone to corrosion include the rocker panels, cab corners, wheel wells, and the frame rails, especially in regions where salt is used on roads during winter. Inspecting these areas thoroughly is crucial when considering a purchase.
Another area that can cause headaches is theelectrical system. Issues can range from failing window motors and power lock actuators to problems with the climate control system, including the blower motor resistor and HVAC blend doors. The instrument cluster can also sometimes develop faults, leading to inaccurate gauge readings or complete failure of certain indicators.
Regarding thepowertrain, while the V6 and V8 engines are known for their durability, they can develop issues over time. Common problems include oil leaks from valve cover gaskets or oil pan seals. The transmission, particularly the automatic 4L60E, can sometimes experience premature wear, especially if the truck has been used for heavy towing or if maintenance has been neglected. Shifting problems or a tendency to slip are indicators of potential transmission issues.
There were also recalls issued for vehicles in this generation, though specific recalls for the 1991 model year should be verified through official channels. However, general long-term reliability concerns often revolve around the aging of rubber components, such as hoses and belts, which can degrade and lead to leaks or failures. Suspension components, like ball joints and bushings, can also wear out, affecting ride quality and handling. While no significant model year-specific major flaws are widely publicized for 1991, the general wear and tear associated with a vehicle approaching 30 years old is the primary long-term reliability factor.
Another area that can cause headaches is theelectrical system. Issues can range from failing window motors and power lock actuators to problems with the climate control system, including the blower motor resistor and HVAC blend doors. The instrument cluster can also sometimes develop faults, leading to inaccurate gauge readings or complete failure of certain indicators.
Regarding thepowertrain, while the V6 and V8 engines are known for their durability, they can develop issues over time. Common problems include oil leaks from valve cover gaskets or oil pan seals. The transmission, particularly the automatic 4L60E, can sometimes experience premature wear, especially if the truck has been used for heavy towing or if maintenance has been neglected. Shifting problems or a tendency to slip are indicators of potential transmission issues.
There were also recalls issued for vehicles in this generation, though specific recalls for the 1991 model year should be verified through official channels. However, general long-term reliability concerns often revolve around the aging of rubber components, such as hoses and belts, which can degrade and lead to leaks or failures. Suspension components, like ball joints and bushings, can also wear out, affecting ride quality and handling. While no significant model year-specific major flaws are widely publicized for 1991, the general wear and tear associated with a vehicle approaching 30 years old is the primary long-term reliability factor.
How long will the 1991 GMC Sierra 1500 last?
Based on owner data and typical maintenance, a well-maintained 1991 GMC Sierra 1500 can realistically achieve between 200,000 and 300,000 miles, or even more. Many owners report these trucks serving them reliably for over 15-20 years. The long-term durability of the engine and transmission is a strong point, especially the Vortec V8 engines. However, weaknesses over time are primarily related to aging components: rust can significantly compromise structural integrity, electrical gremlins become more common, and suspension parts will inevitably wear. Regular fluid changes, addressing minor issues promptly, and protecting the body from excessive corrosion are key to maximizing its lifespan.
What Technology & Safety Features are Included?
The 1991 GMC Sierra 1500 represents the technology of its era, meaning modern amenities are sparse. Built-in tech was primarily focused on basic functionality. For entertainment, standard equipment typically included an AM/FM radio, often with a single-DIN cassette player. Higher trims or optional packages could upgrade this to a more powerful stereo system with more speakers, potentially including graphic equalizers. Cassette players were the peak of personal audio technology for many.
Driver-assistance features were virtually nonexistent by today's standards. Cruise control was a common optional feature, and some models might have offered intermittent windshield wipers. Anti-lock braking systems (ABS) were available, primarily on the rear wheels for 2WD models, and typically standard on 4WD models, enhancing braking control under certain conditions. Power steering was standard, making maneuvering easier.
Safety features were basic. Standard equipment included lap and shoulder belts for front occupants. Side-impact door beams were also a part of the structural safety design. Airbags were not standard equipment in 1991 for this vehicle, which was common for trucks at that time. The absence of advanced safety systems like airbags, traction control, or electronic stability control means it falls significantly short of modern safety benchmarks.
Crash-test ratings for vehicles of this vintage are not directly comparable to modern NHTSA or IIHS standards. However, trucks from this era were generally built with a robust frame and body-on-frame construction, offering a degree of passive safety through sheer mass and structural integrity. Optional features were generally comfort and convenience oriented, such as power windows, power locks, tilt steering wheel, and air conditioning, rather than technology or safety enhancements.
Driver-assistance features were virtually nonexistent by today's standards. Cruise control was a common optional feature, and some models might have offered intermittent windshield wipers. Anti-lock braking systems (ABS) were available, primarily on the rear wheels for 2WD models, and typically standard on 4WD models, enhancing braking control under certain conditions. Power steering was standard, making maneuvering easier.
Safety features were basic. Standard equipment included lap and shoulder belts for front occupants. Side-impact door beams were also a part of the structural safety design. Airbags were not standard equipment in 1991 for this vehicle, which was common for trucks at that time. The absence of advanced safety systems like airbags, traction control, or electronic stability control means it falls significantly short of modern safety benchmarks.
Crash-test ratings for vehicles of this vintage are not directly comparable to modern NHTSA or IIHS standards. However, trucks from this era were generally built with a robust frame and body-on-frame construction, offering a degree of passive safety through sheer mass and structural integrity. Optional features were generally comfort and convenience oriented, such as power windows, power locks, tilt steering wheel, and air conditioning, rather than technology or safety enhancements.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
1991 GMC Sierra 1500 Prices and Market Value
When new in 1991, the GMC Sierra 1500 had a price range typically between $15,000 and $25,000, depending heavily on the trim level, engine, and options selected. As a classic truck, its depreciation curve has long since flattened, and in many cases, values have stabilized or even begun to increase for well-maintained examples, especially those with desirable engine options (like the 5.7L V8) or in excellent original condition. Factors significantly affecting current resale value include overall condition (minimal rust, clean interior), mileage, maintenance history, originality (stock vs. modified), and the presence of desirable features. Trucks in excellent, low-mileage condition can command prices upwards of $10,000-$15,000 or more, while project trucks can be found for a few thousand dollars.
1991 GMC Sierra 1500 Cost of Ownership
Ownership costs for a 1991 GMC Sierra 1500 are generally moderate, leaning towards economical for a truck. Insurance is typically affordable, especially for liability-only coverage on older vehicles. Fuel costs will vary based on engine choice and driving habits, but expect around 15-20 MPG combined. Routine maintenance (oil changes, filters) is straightforward and inexpensive. Repair costs can be a mixed bag; common wear items are readily available and affordable, but major engine or transmission overhauls can be substantial. Overall, its straightforward design and widespread parts availability make it relatively economical to own compared to modern vehicles, particularly if major repairs are avoided through good maintenance.
1991 GMC Sierra 1500 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
25.00 gallons
City Mileage
17 miles/gallon
Highway Mileage
22 miles/gallon
1991 GMC Sierra 1500 Safety Rating
NHTSA
IIHS
1991 GMC Sierra 1500 Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
1991 GMC Sierra 1500 Insurance
Insurance for a 1991 GMC Sierra 1500 is moderately priced, reflecting its status as a Pickup Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1991 GMC Sierra 1500 Compare to Other Pickup Truck?
The 1991 GMC Sierra 1500 competed directly with other full-size pickup trucks of its era, most notably the Ford F-150 and the Dodge Ram 1500. In terms of performance, the Sierra often offered competitive engine options, with its 5.7L V8 providing strong towing and hauling capabilities comparable to its rivals. The 4.3L V6 was a popular choice for a balance of power and economy, often outperforming base engines from competitors.
When it comes to features, the Sierra 1500 was generally on par with the F-150 and Ram. Interior amenities like power windows, locks, and upgraded audio systems were available across all three. GMC often aimed for a slightly more refined interior feel in its higher trims (SLE, SLT) compared to some base models of competitors, though significant technological differences were minimal in this segment at the time.
Reliability is where the Sierra 1500, and its Chevrolet sibling (the Silverado), often shined. These trucks are renowned for their robust build quality and mechanical longevity. While all trucks from this era are susceptible to rust, the underlying mechanicals of the GMC Sierra are generally considered very dependable, with many owners reporting high mileage with proper maintenance, often rivaling or exceeding the perceived reliability of certain Ford or Dodge models of the same vintage.
Price-wise, the Sierra 1500 typically fell within a similar range to the F-150 and Ram 1500 when new. In the used market today, all three are affordable classic trucks. However, the Sierra often holds its value slightly better than the Ram due to its reputation for reliability and build quality, and it can sometimes be found at a slightly more accessible price point than a comparable F-150, depending on condition.
Alternatives:
When it comes to features, the Sierra 1500 was generally on par with the F-150 and Ram. Interior amenities like power windows, locks, and upgraded audio systems were available across all three. GMC often aimed for a slightly more refined interior feel in its higher trims (SLE, SLT) compared to some base models of competitors, though significant technological differences were minimal in this segment at the time.
Reliability is where the Sierra 1500, and its Chevrolet sibling (the Silverado), often shined. These trucks are renowned for their robust build quality and mechanical longevity. While all trucks from this era are susceptible to rust, the underlying mechanicals of the GMC Sierra are generally considered very dependable, with many owners reporting high mileage with proper maintenance, often rivaling or exceeding the perceived reliability of certain Ford or Dodge models of the same vintage.
Price-wise, the Sierra 1500 typically fell within a similar range to the F-150 and Ram 1500 when new. In the used market today, all three are affordable classic trucks. However, the Sierra often holds its value slightly better than the Ram due to its reputation for reliability and build quality, and it can sometimes be found at a slightly more accessible price point than a comparable F-150, depending on condition.
Alternatives:
- Chevrolet Silverado C/K 1500 (1988-1998): Essentially the same truck mechanically, often with different styling cues and trim names. A very similar and equally viable alternative.
- Ford F-150 (1987-1996): A very strong competitor with excellent durability, a wide range of engines, and a massive aftermarket. Often seen as the benchmark in the segment.
- Dodge Ram 1500 (1994-2001 - second generation): While the 1991 model was the previous generation, the later second-gen Ram offered a more modern design and powertrain (like the Magnum V8s) and is another good option if a slightly newer truck is desired.
Final Verdict: Is the 1991 GMC Sierra 1500 a Good Pickup Truck?
The 1991 GMC Sierra 1500 is ideal for individuals seeking a dependable, classic pickup truck for work, light hauling, or as a project vehicle. It's well-suited for those who appreciate simple, robust engineering and classic styling over modern tech. It is absolutely worth buying if found in good condition, particularly for DIY enthusiasts or those looking for an affordable workhorse. When buying, prioritize examples with minimal rust, especially on the frame and body. Used is the only option as it's a classic. Specific trims like the SLE or SLT offer more comfort, but the base models are often the most utilitarian. It's a solid choice for budget-conscious buyers who value long-term mechanical reliability and a straightforward driving experience.
Jovan
Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.