The 1986 GMC Suburban, part of the third generation (1973-1991), is a full-size SUV renowned for its cavernous interior and truck-like capability. Available in two-wheel and four-wheel drive, key trims included the base model and the more luxurious Sierra Classic. Its immense space and ruggedness made it a favorite for large families, fleet operators, and those needing to haul significant cargo or tow trailers, cementing its status as an iconic American utility vehicle.
The Good
The 1986 Suburban offers robust V8 performance for towing and hauling, legendary GM truck reliability, and a spacious, comfortable cabin. Its classic, imposing design evokes a sense of security and capability, providing immense practical value for families and work needs, while its go-anywhere attitude appeals to the adventurous spirit.
The Bad
Be wary of rust, particularly on the frame, body panels (wheel wells, rockers), and exhaust system. Aging transmissions and carburetors can be problematic. Fuel economy is naturally poor, and interior wear and tear, especially on the seats and headliner, is common due to age.
1986 GMC Suburban: Quick Overview
- Engine Options:
- 4.3L V6 (LG4)
- 5.0L V8 (L03)
- 5.7L V8 (L05)
- 7.4L V8 (L19)
- Horsepower (approximate estimates, may vary slightly by year and specific engine code):
- 4.3L V6: 160-180 hp
- 5.0L V8: 170-185 hp
- 5.7L V8: 185-210 hp
- 7.4L V8: 230 hp
- Fuel Economy:
Expect very low figures. The V8 engines typically achieved 10-14 MPG city and 13-17 MPG highway, with the V6 being marginally better. This was not a strong suit for the Suburban. - 0-60 Times:
Varies significantly based on engine and drivetrain. Generally in the range of 9-12 seconds for V8 models, but can be slower with heavier loads or less powerful engines. - Towing Capacity:
Highly dependent on configuration (engine, rear-end ratio, towing package). Can range from 5,000 lbs to over 8,500 lbs for properly equipped models, making it a very capable hauler. - Trim-Level Features:
Base Model: Functional and durable interior, vinyl or cloth seating, basic instrumentation, AM/FM radio, manual windows and locks. Focus on utility.
Sierra Classic (more upscale): Often included upgraded cloth or velour seating, power windows and locks (optional on base), cruise control, upgraded interior trim, perhaps a cassette player, and exterior chrome accents. Air conditioning was standard or a very common option across most trims.
1986 GMC Suburban Specifications
Vehicle Information
| Year | 1986 |
| Make | GMC |
| Model | Suburban |
| Trim | - |
| Style | - |
| Type | Sport Utility Vehicle |
| Category | Minivan |
Manufacturing Details
| Made In | United States |
| Manufacturing City | FLINT |
Dimensions
| Doors | 4-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 5.7L V8 |
| Engine Size | 5.7L |
| Engine Cylinders | 8 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1986 GMC Suburban Have?
The 1986 GMC Suburban, being a vehicle of considerable age, is susceptible to common issues associated with wear and tear. One of the most prevalent concerns isrust. Areas like the rocker panels, wheel wells, floor pans, and the frame itself are prime spots for corrosion, especially in regions where road salt is used. Thorough inspection of these areas is crucial when considering a purchase.
Powertrain issues are also frequently reported. Carburetors, particularly the Rochester Quadrajet found on V8 engines, can become finicky with age and require careful tuning or rebuilding. Automatic transmissions, like the TH400 or 700R4, can develop issues such as slipping, hard shifting, or complete failure if not properly maintained. Cooler lines can also corrode and leak.
The electrical system can present challenges. Headlight switch failures, dimmer switch problems, and issues with the instrument cluster are not uncommon. Power window motors and door lock actuators are also frequent culprits for failure due to their age and use.
Suspension and steering components will likely show wear. Ball joints, tie rod ends, and bushings can become worn, leading to sloppy steering and poor handling. The steering box itself can develop leaks or play.
Regarding specific recalls for the 1986 model year, it's important to check official NHTSA records, but generally, for this era of GM trucks and SUVs, recalls often pertained to issues like steering components, brake systems, or potential fuel leaks. Given its age, many original recalls may have already been addressed, but verification is always recommended. Long-term reliability hinges heavily on maintenance. A well-maintained 1986 Suburban with regular fluid changes, timely repairs, and rust prevention can be remarkably durable, often exceeding 200,000 miles. However, neglected examples can quickly become money pits.
Powertrain issues are also frequently reported. Carburetors, particularly the Rochester Quadrajet found on V8 engines, can become finicky with age and require careful tuning or rebuilding. Automatic transmissions, like the TH400 or 700R4, can develop issues such as slipping, hard shifting, or complete failure if not properly maintained. Cooler lines can also corrode and leak.
The electrical system can present challenges. Headlight switch failures, dimmer switch problems, and issues with the instrument cluster are not uncommon. Power window motors and door lock actuators are also frequent culprits for failure due to their age and use.
Suspension and steering components will likely show wear. Ball joints, tie rod ends, and bushings can become worn, leading to sloppy steering and poor handling. The steering box itself can develop leaks or play.
Regarding specific recalls for the 1986 model year, it's important to check official NHTSA records, but generally, for this era of GM trucks and SUVs, recalls often pertained to issues like steering components, brake systems, or potential fuel leaks. Given its age, many original recalls may have already been addressed, but verification is always recommended. Long-term reliability hinges heavily on maintenance. A well-maintained 1986 Suburban with regular fluid changes, timely repairs, and rust prevention can be remarkably durable, often exceeding 200,000 miles. However, neglected examples can quickly become money pits.
How long will the 1986 GMC Suburban last?
Based on owner data and typical maintenance, a 1986 GMC Suburban can reasonably be expected to serve for 200,000 to 300,000 miles if well-maintained. Many owners report their Suburbans lasting well into the third decade of ownership. Long-term durability is a strong suit, provided regular oil changes, transmission service, and addressing any emerging rust issues promptly. The robust V8 engines and sturdy chassis are built to last. However, neglect can significantly shorten its service life, leading to major drivetrain repairs or rust-related structural compromises, which become its primary weaknesses over extended periods.
What Technology & Safety Features are Included?
The 1986 GMC Suburban represents an era where technology in vehicles was far less advanced than today, focusing primarily on functionality. Built-in tech was rudimentary. Standard entertainment usually consisted of an AM/FM radio, with an optional AM/FM cassette player being a popular upgrade for better audio fidelity and the ability to play personal mixtapes. Air conditioning was a highly desirable and common option, crucial for comfort in such a large cabin.
Driver-assistance features were virtually non-existent. The most advanced safety systems available would have been seatbelts (lap and shoulder belts for front occupants, lap belts for rear) and possibly a daytime running light system, though not as sophisticated as modern DRLs. Power steering and power brakes were standard, improving the driving experience and control. Anti-lock braking systems (ABS) were beginning to appear on some GM vehicles in the mid-to-late 80s, but were not standard or widely available on the Suburban for 1986; they were an optional feature on some higher trims or specific configurations, primarily for the rear wheels.
The truck-based platform offered a sense of robust build quality, but formal crash-test ratings from organizations like the NHTSA or IIHS in the way we understand them today were either not conducted comprehensively for large SUVs or the results are not readily available or comparable to modern standards. These vehicles relied more on their substantial metal construction for occupant protection. Optional features would have been limited to things like cruise control, tilt steering wheel, and perhaps upgraded speaker systems. The focus was on utility and durability rather than electronic aids or sophisticated infotainment.
Driver-assistance features were virtually non-existent. The most advanced safety systems available would have been seatbelts (lap and shoulder belts for front occupants, lap belts for rear) and possibly a daytime running light system, though not as sophisticated as modern DRLs. Power steering and power brakes were standard, improving the driving experience and control. Anti-lock braking systems (ABS) were beginning to appear on some GM vehicles in the mid-to-late 80s, but were not standard or widely available on the Suburban for 1986; they were an optional feature on some higher trims or specific configurations, primarily for the rear wheels.
The truck-based platform offered a sense of robust build quality, but formal crash-test ratings from organizations like the NHTSA or IIHS in the way we understand them today were either not conducted comprehensively for large SUVs or the results are not readily available or comparable to modern standards. These vehicles relied more on their substantial metal construction for occupant protection. Optional features would have been limited to things like cruise control, tilt steering wheel, and perhaps upgraded speaker systems. The focus was on utility and durability rather than electronic aids or sophisticated infotainment.
What Colors Options are Available?
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1986 GMC Suburban Prices and Market Value
In 1986, a new GMC Suburban likely had a base price starting in the low to mid-$20,000 range, with higher trims and options pushing it well into the $30,000s. These vehicles were a significant investment. Today, used market prices for a 1986 GMC Suburban vary dramatically. Clean, well-maintained examples, especially those with desirable options or rarer engine choices, can fetch anywhere from $5,000 to $15,000 or even more for pristine, low-mileage survivors. Poor condition examples can be found for under $3,000. Depreciation has long since bottomed out; these vehicles are now considered classics or vintage utility vehicles. Resale value is heavily influenced by condition, rust, originality, maintenance history, and whether it has been converted into a more specialized vehicle (e.g., camper).
1986 GMC Suburban Cost of Ownership
Owning a 1986 GMC Suburban is generally not economical. Fuel costs are high due to poor MPG. Insurance for older vehicles can be surprisingly affordable, especially if classified as a classic, but can increase with specialized coverage. Maintenance requires diligence: regular fluid changes, tune-ups, and rust prevention are key. Repairs can be moderate to high; while parts are often available, specialized knowledge for older V8s and transmissions might be needed. Complex repairs can be costly. Overall, expect higher than average ownership costs primarily driven by fuel consumption and the potential for significant repairs on aging components, making it a costly, though potentially rewarding, vehicle to own.
1986 GMC Suburban Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
1986 GMC Suburban 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
1986 GMC Suburban Insurance
Insurance for a 1986 GMC Suburban is moderately priced, reflecting its status as a Sport Utility Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1986 GMC Suburban Compare to Other Sport Utility Vehicle?
The 1986 GMC Suburban primarily competed against its GM sibling, the Chevrolet K/V Series Suburban, which shared most mechanicals and powertrains. Its main non-GM rival in the full-size SUV segment was the Ford Bronco, though the Bronco was significantly smaller, less focused on passenger capacity, and more of a traditional 4x4 utility vehicle. Other large station wagons with optional 4WD could be considered indirect competitors for family hauling, but lacked the Suburban's serious truck capability.
Performance: The Suburban offered robust V8 options superior to most smaller SUVs or cars, excellent for towing and hauling. Its truck chassis provided a commanding presence but a less refined ride than some luxury SUVs that emerged later.
Features: In 1986, features were basic by today's standards. The Suburban offered ample seating and cargo space, which was its primary feature. Rivals like the Bronco had a more spartan interior.
Reliability: GM's C/K platform was known for being robust and repairable, a strong point for the Suburban. Ford's Bronco was also generally reliable, but its smaller size limited its utility. Parts availability for the Suburban remains good due to its widespread production.
Price: New, the Suburban was a premium-priced vehicle. Used, its value is highly condition-dependent.
Alternatives:
For those seeking pure utility and space in a vintage package, the 1986 Suburban is a top contender. If a smaller, more nimble off-roader is desired, a Bronco is the pick. For a more modern experience, look to later generations.
Performance: The Suburban offered robust V8 options superior to most smaller SUVs or cars, excellent for towing and hauling. Its truck chassis provided a commanding presence but a less refined ride than some luxury SUVs that emerged later.
Features: In 1986, features were basic by today's standards. The Suburban offered ample seating and cargo space, which was its primary feature. Rivals like the Bronco had a more spartan interior.
Reliability: GM's C/K platform was known for being robust and repairable, a strong point for the Suburban. Ford's Bronco was also generally reliable, but its smaller size limited its utility. Parts availability for the Suburban remains good due to its widespread production.
Price: New, the Suburban was a premium-priced vehicle. Used, its value is highly condition-dependent.
Alternatives:
- Chevrolet K/V Series Suburban: Virtually identical to the GMC, often offering slightly different trim or badging. A very similar choice.
- Ford Bronco (1980-1986): A more compact, rugged 4x4. Better off-road focus but less passenger and cargo space than the Suburban.
- Later Model SUVs (e.g., 1990s Chevrolet Tahoe/Yukon, Ford Expedition): If modern features, improved fuel economy, and better safety are priorities, these later models offer significant advantages, though at a higher purchase price and potentially more complex electronics.
For those seeking pure utility and space in a vintage package, the 1986 Suburban is a top contender. If a smaller, more nimble off-roader is desired, a Bronco is the pick. For a more modern experience, look to later generations.
Final Verdict: Is the 1986 GMC Suburban a Good Sport Utility Vehicle?
The 1986 GMC Suburban is ideal for individuals or families who prioritize immense space, towing capability, and a rugged, classic aesthetic over modern conveniences and fuel efficiency. It's a vehicle for enthusiasts who appreciate its historical significance and are willing to invest time and money in maintenance. It is worth buying for those seeking a project vehicle, a capable hauler for specific needs (like boat towing or large equipment transport), or a unique, retro family cruiser. Buying one is most sensible in good to excellent condition, with minimal rust and a documented maintenance history. Opting for a well-preserved V8 model, especially the 5.7L or 7.4L, will provide the most robust performance. It is not recommended for daily commuting or for those on a tight budget due to its fuel consumption and potential repair costs.
Eugene S
Eugene is an automotive enthusiast with over 15 years of experience in the used car market. As a writer at VINCheck.info, he brings deep industry insight and a passion for cars, helping readers make smart, informed decisions. Eugene has written hundreds of used car reviews and is known for breaking down complex automotive topics into clear, actionable advice. Over the years, he has driven and worked on a wide range of vehicles—starting with tuning street cars in his early days and eventually focusing on performance upgrades and reliability improvements. Today, he specializes in evaluating used vehicles through the lens of real-world ownership and enthusiast needs. A longtime fan of Porsche, Eugene especially appreciates vehicles that blend durability with driving enjoyment.