The 1998 GMC Suburban, a quintessential full-size SUV, hails from the eighth generation (GMT400 platform) which spanned from 1992 to 1999. It featured a classic, boxy station wagon body style, available in 1500 and heavy-duty 2500 series. Key trims included the utilitarian SL, the well-equipped SLE, and the luxurious SLT. New, its pricing ranged approximately from $28,000 to $35,000. Its immense interior space, seating for up to nine, and formidable towing capacity made it stand out as the ultimate family hauler and workhorse for its era.
The Good
The 1998 GMC Suburban boasts impressive utility, offering vast cargo space and comfortable seating for large families, appealing to practical buyers. Its powerful V8 engines deliver strong towing and hauling capabilities. While not fuel-efficient, its robust construction and relative simplicity often translate to good long-term reliability and excellent value on the used market, resonating with buyers seeking enduring functionality and a commanding road presence.
The Bad
Potential weaknesses for the 1998 GMC Suburban include transmission issues, particularly with the 4L60E, and common failures of the fuel pump and intake manifold gaskets. Rust, especially on rocker panels and wheel arches, is also prevalent. Furthermore, electrical gremlins, such as faulty speedometers or ABS modules, are not uncommon and should be scrutinized during inspection.
1998 GMC Suburban: Quick Overview
- Engine Options:
- 5.7L Vortec 5700 V8 (gasoline)
- 7.4L Vortec 7400 V8 (gasoline, primarily 2500 series)
- 6.5L Turbo Diesel V8 (available on both 1500 and 2500 series) - Horsepower:
- 5.7L V8: Approximately 255 hp @ 4600 rpm and 330 lb-ft torque @ 2800 rpm
- 7.4L V8: Approximately 290 hp @ 4000 rpm and 410 lb-ft torque @ 3200 rpm
- 6.5L Turbo Diesel V8: Approximately 190 hp @ 3400 rpm and 385 lb-ft torque @ 1800 rpm - Fuel Economy (EPA estimates, highly variable by engine/drivetrain):
- 5.7L V8 4x4: Around 12-14 MPG city / 16-18 MPG highway
- 7.4L V8 4x4: Around 10-12 MPG city / 13-15 MPG highway
- 6.5L Turbo Diesel 4x4: Around 13-15 MPG city / 17-20 MPG highway - 0-60 MPH Times:
- Not a performance vehicle, times generally range from 9.0 to 11.0 seconds depending on engine, load, and drivetrain. - Towing Capacity (when properly equipped):
- 1500 series: Up to approximately 7,000-7,500 lbs
- 2500 series: Up to approximately 9,000-10,000 lbs (with 7.4L V8 or 6.5L Diesel) - Trim-Level Features:
- SL: Basic trim, typically included manual windows/locks, air conditioning, AM/FM radio, cloth seats, and bench seating.
- SLE: Mid-range trim, added power windows/locks, cruise control, tilt steering wheel, upgraded cloth upholstery, cassette player, and often alloy wheels.
- SLT: Top-tier luxury trim, featured leather seating, power-adjustable front seats, premium audio system with CD player, rear climate controls, keyless entry, fog lamps, and chrome exterior accents. Optional features like heated seats and a locking rear differential were also more common on the SLT.
1998 GMC Suburban Specifications
Vehicle Information
| Year | 1998 |
| Make | GMC |
| Model | Suburban |
| Trim | - |
| Style | - |
| Type | Sport Utility Vehicle |
| Category | Standard Sport Utility Vehicle |
Manufacturing Details
| Made In | Mexico |
| Manufacturing City | SILAO |
Dimensions
| Doors | 4-Door |
| Curb Weight | 5286 pounds |
| Gross Vehicle Weight Rating | 8600 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 5.7 8 |
| Engine Size | 5.7L |
| Engine Cylinders | 8 |
| Transmission | - |
| Transmission Type | Automatic |
| Transmission Speeds | - |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
Vehicle History Report
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Analysis
Analysis
What Problems Does the 1998 GMC Suburban Have?
Owners of the 1998 GMC Suburban frequently report several persistent issues, often linked to the GMT400 platform's aging components. A primary concern is the transmission, particularly the 4L60E automatic found in 1500 series models. These units are prone to failure around the 100,000-150,000-mile mark, exhibiting slipping gears or delayed engagement, often necessitating a rebuild or replacement. The heavier-duty 4L80E in 2500 models is generally more robust but not entirely immune.
Fuel pump failures are another common problem, leading to no-start conditions or stalling. The pump is located inside the fuel tank, making replacement a labor-intensive job. Intake manifold gasket leaks, particularly with the lower intake manifold, are also widespread, often manifesting as coolant loss or engine misfires due to internal leakage. These can be costly to repair if neglected.
Electrically, faulty ABS modules are a known issue, leading to an illuminated ABS warning light and compromised braking performance. Speedometer and other gauge cluster inaccuracies or complete failures are also frequently cited. Rust is a significant long-term reliability concern, with rocker panels, wheel wells, and chassis components being particularly vulnerable, especially in regions with road salt.
The 6.5L Turbo Diesel engine, while offering good torque, has its own set of common issues, including injection pump failures (PMD "Death Module"), lift pump problems, and block cracking, which can be catastrophic. Exhaust manifold bolts breaking or rusting out are also common across all engine types. While specific recalls for the 1998 model year might require a VIN-specific search, the GMT400 platform had several recalls related to components like daytime running lights, seat belt buckles, and, in some earlier years, fuel tank issues, though these may not directly apply to all 1998 vehicles without verification.
Fuel pump failures are another common problem, leading to no-start conditions or stalling. The pump is located inside the fuel tank, making replacement a labor-intensive job. Intake manifold gasket leaks, particularly with the lower intake manifold, are also widespread, often manifesting as coolant loss or engine misfires due to internal leakage. These can be costly to repair if neglected.
Electrically, faulty ABS modules are a known issue, leading to an illuminated ABS warning light and compromised braking performance. Speedometer and other gauge cluster inaccuracies or complete failures are also frequently cited. Rust is a significant long-term reliability concern, with rocker panels, wheel wells, and chassis components being particularly vulnerable, especially in regions with road salt.
The 6.5L Turbo Diesel engine, while offering good torque, has its own set of common issues, including injection pump failures (PMD "Death Module"), lift pump problems, and block cracking, which can be catastrophic. Exhaust manifold bolts breaking or rusting out are also common across all engine types. While specific recalls for the 1998 model year might require a VIN-specific search, the GMT400 platform had several recalls related to components like daytime running lights, seat belt buckles, and, in some earlier years, fuel tank issues, though these may not directly apply to all 1998 vehicles without verification.
How long will the 1998 GMC Suburban last?
With diligent maintenance, a 1998 GMC Suburban can easily achieve 200,000 to 300,000 miles, and many owners report reaching even higher mileage figures, translating to 15-20+ years of service. Its robust body-on-frame construction and powerful V8 engines contribute to its long-term durability. However, this longevity hinges on proactive maintenance, particularly addressing common weaknesses. Transmissions are a major long-term weak point, often requiring a rebuild or replacement at higher mileages. Rust becomes a persistent battle in corrosive climates, impacting structural integrity and appearance over time. Electrical gremlins, such as gauge cluster or ABS module failures, also tend to surface as the vehicle ages. Regular fluid changes, especially for the transmission and differentials, are crucial for maximizing its lifespan, mitigating these known vulnerabilities.
What Technology & Safety Features are Included?
The 1998 GMC Suburban, as a product of its era, featured relatively basic built-in technology and driver-assistance systems compared to modern vehicles. Its primary focus was utility and comfort. Standard entertainment typically included an AM/FM stereo with a cassette player, with optional upgrades to a CD player, particularly on SLE and SLT trims. Rear-seat audio controls and headphone jacks were available on higher trims, a luxury at the time for long family trips.
Driver-assistance features were rudimentary. Anti-lock brakes (ABS) were standard on all four wheels, offering improved stopping power under hard braking. Cruise control was a common convenience feature, especially on SLE and SLT models. Power steering was standard, making the large vehicle manageable, and power windows, locks, and mirrors were increasingly common, moving up the trim levels. Keyless entry was an optional convenience feature for easier access.
Safety features were also more basic. Dual front airbags were standard, a significant advancement for the 1990s. Three-point seatbelts were provided for most seating positions. The sturdy body-on-frame construction offered inherent passive safety in a collision. Traction control and stability control systems, common today, were not available. Parking sensors or rearview cameras were decades away from becoming mainstream features. Crash-test ratings for the 1998 GMC Suburban by organizations like the NHTSA or IIHS are limited or non-existent in the same comprehensive format as modern vehicles. Early crash tests often focused on frontal impacts, where the Suburban's mass generally provided a degree of protection, but specific scores for side impact or rollover resistance are less readily available or detailed compared to contemporary standards. Owners primarily relied on its sheer size and mass for a sense of security.
Driver-assistance features were rudimentary. Anti-lock brakes (ABS) were standard on all four wheels, offering improved stopping power under hard braking. Cruise control was a common convenience feature, especially on SLE and SLT models. Power steering was standard, making the large vehicle manageable, and power windows, locks, and mirrors were increasingly common, moving up the trim levels. Keyless entry was an optional convenience feature for easier access.
Safety features were also more basic. Dual front airbags were standard, a significant advancement for the 1990s. Three-point seatbelts were provided for most seating positions. The sturdy body-on-frame construction offered inherent passive safety in a collision. Traction control and stability control systems, common today, were not available. Parking sensors or rearview cameras were decades away from becoming mainstream features. Crash-test ratings for the 1998 GMC Suburban by organizations like the NHTSA or IIHS are limited or non-existent in the same comprehensive format as modern vehicles. Early crash tests often focused on frontal impacts, where the Suburban's mass generally provided a degree of protection, but specific scores for side impact or rollover resistance are less readily available or detailed compared to contemporary standards. Owners primarily relied on its sheer size and mass for a sense of security.
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.
1998 GMC Suburban Prices and Market Value
When new in 1998, a GMC Suburban typically retailed for approximately $28,000 for a base 1500 SL model, extending to around $35,000 or more for a fully optioned 2500 SLT. Fast forward to today, and the used market prices vary significantly based on condition, mileage, and maintenance history. Well-preserved examples can fetch $5,000 to $15,000, particularly if they are 2500 series models or have been meticulously cared for. More common, higher-mileage examples generally range from $2,000 to $6,000. Depreciation has largely bottomed out, meaning these vehicles hold their minimal value well if kept running. Factors affecting resale value include the absence of significant rust, a healthy transmission and engine, functional 4x4 systems, and a clean interior. Poor maintenance or major mechanical issues significantly diminish its value, making it a parts car.
1998 GMC Suburban Cost of Ownership
Owning a 1998 GMC Suburban can be a mixed bag financially. Insurance costs are generally moderate due to its age and common parts availability. However, fuel costs are high; its large V8 engines and heavy weight result in poor fuel economy, making it quite costly at the pump. Maintenance and repair costs can vary. While parts are widely available and often inexpensive, major repairs like a transmission rebuild or fuel pump replacement can be substantial. Long-term, consistent maintenance is crucial to prevent cascading issues. Overall, while the initial purchase price is low, the Suburban is generally a costly vehicle to own due to its significant fuel consumption and potential for expensive, age-related repairs, despite reasonable insurance and readily available parts.
1998 GMC Suburban Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
42 gallons
City Mileage
-
Highway Mileage
-
1998 GMC Suburban Safety Rating
NHTSA
IIHS
1998 GMC Suburban Insurance
Insurance for a 1998 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 1998 GMC Suburban Compare to Other Sport Utility Vehicle?
The 1998 GMC Suburban faced strong competition from rivals, primarily the Ford Expedition/Excursion and Chevrolet Tahoe/Yukon (its platform mates).
Against its mechanical twin, the 1998 Chevrolet Suburban, the GMC version offered virtually identical performance, reliability, and features, differing mostly in grille, trim, and badging. Prices were also very similar.
When compared to the 1998 Ford Expedition, the Suburban often offered superior third-row space and cargo capacity behind the third row, making it a more practical choice for larger families needing maximum utility. The Expedition, launched in 1997, felt slightly more refined and car-like to drive for some, and its independent front suspension offered a marginally smoother ride. Performance was comparable with their respective V8s, though the Suburban's optional 7.4L V8 gave it a towing advantage. Reliability was broadly similar, with both brands having their common age-related issues.
A more direct rival in terms of sheer size and capability was the eventual Ford Excursion (though it debuted later). For the 1998 model year, the Suburban was still king of the hill for passenger and cargo volume among consumer-oriented SUVs.
In terms of reliability, the Suburban's common issues like transmission failures and intake manifold gaskets were mirrored by Ford's own set of prevalent problems for the era, such as spark plug issues and transmission concerns. Overall, the long-term durability for all these full-size SUVs often came down to individual maintenance.
For features, all these full-size SUVs of the late 90s offered comparable levels of comfort and convenience for the time, with power accessories, air conditioning, and optional leather being standard fare on higher trims. None offered advanced driver-assistance systems.
Considering alternatives today, if someone is looking for a similar blend of space and utility on a budget, the 1998 Chevrolet Suburban is an obvious, essentially identical choice. For something slightly newer with potentially more modern safety or comfort features, a well-maintained early 2000s Chevrolet Tahoe/Suburban (GMT800 platform) would be a better alternative, offering improved ride quality, better engines, and enhanced safety without a massive jump in price. If towing capacity is paramount and fuel economy is a secondary concern, an older Ford Excursion with its larger Power Stroke diesel or V10 gas engine could be considered, though finding clean examples is challenging.
Against its mechanical twin, the 1998 Chevrolet Suburban, the GMC version offered virtually identical performance, reliability, and features, differing mostly in grille, trim, and badging. Prices were also very similar.
When compared to the 1998 Ford Expedition, the Suburban often offered superior third-row space and cargo capacity behind the third row, making it a more practical choice for larger families needing maximum utility. The Expedition, launched in 1997, felt slightly more refined and car-like to drive for some, and its independent front suspension offered a marginally smoother ride. Performance was comparable with their respective V8s, though the Suburban's optional 7.4L V8 gave it a towing advantage. Reliability was broadly similar, with both brands having their common age-related issues.
A more direct rival in terms of sheer size and capability was the eventual Ford Excursion (though it debuted later). For the 1998 model year, the Suburban was still king of the hill for passenger and cargo volume among consumer-oriented SUVs.
In terms of reliability, the Suburban's common issues like transmission failures and intake manifold gaskets were mirrored by Ford's own set of prevalent problems for the era, such as spark plug issues and transmission concerns. Overall, the long-term durability for all these full-size SUVs often came down to individual maintenance.
For features, all these full-size SUVs of the late 90s offered comparable levels of comfort and convenience for the time, with power accessories, air conditioning, and optional leather being standard fare on higher trims. None offered advanced driver-assistance systems.
Considering alternatives today, if someone is looking for a similar blend of space and utility on a budget, the 1998 Chevrolet Suburban is an obvious, essentially identical choice. For something slightly newer with potentially more modern safety or comfort features, a well-maintained early 2000s Chevrolet Tahoe/Suburban (GMT800 platform) would be a better alternative, offering improved ride quality, better engines, and enhanced safety without a massive jump in price. If towing capacity is paramount and fuel economy is a secondary concern, an older Ford Excursion with its larger Power Stroke diesel or V10 gas engine could be considered, though finding clean examples is challenging.
Final Verdict: Is the 1998 GMC Suburban a Good Sport Utility Vehicle?
The 1998 GMC Suburban is ideal for large families, active individuals, or small businesses requiring immense passenger and cargo capacity, strong towing capabilities, and a robust, no-nonsense platform. It's particularly suited for those who appreciate classic SUV styling and are willing to handle basic maintenance themselves or have a trusted mechanic.
Is it worth buying today? Absolutely, but with specific conditions. It's an excellent used vehicle purchase for those on a tight budget needing maximum utility. Look for a well-maintained 2500 series with the 7.4L V8 if heavy towing is a priority, or a 1500 SLE/SLT for balanced family use. Critical checks include the transmission, signs of rust, engine health (especially for leaks or unusual noises), and electrical functionality. Avoid examples with known major mechanical issues unless you plan a comprehensive restoration. If you understand its fuel consumption and are prepared for potential age-related repairs, this '90s workhorse offers unparalleled practicality and durability for its price.
Is it worth buying today? Absolutely, but with specific conditions. It's an excellent used vehicle purchase for those on a tight budget needing maximum utility. Look for a well-maintained 2500 series with the 7.4L V8 if heavy towing is a priority, or a 1500 SLE/SLT for balanced family use. Critical checks include the transmission, signs of rust, engine health (especially for leaks or unusual noises), and electrical functionality. Avoid examples with known major mechanical issues unless you plan a comprehensive restoration. If you understand its fuel consumption and are prepared for potential age-related repairs, this '90s workhorse offers unparalleled practicality and durability for its price.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.