The 1999 GMC Sierra 2500 marked the introduction of the all-new GMT800 platform, a significant redesign from its C/K predecessors. Available in Regular and Extended Cab body styles with various bed lengths, it offered SL, SLE, and SLT trims. With new pricing ranging from approximately $25,000 to $35,000+, it quickly became popular for its updated styling, improved ride quality, and robust powertrain options, establishing itself as a reliable workhorse for heavy-duty tasks.
The Good
The 1999 Sierra 2500 offers strong towing and hauling performance from its Vortec V8s, combined with impressive reliability for its era. Its updated design provided enhanced comfort and a more refined ride than previous generations. Practical buyers appreciate its lasting durability and excellent value, while emotional buyers connect with its rugged capability and timeless American truck aesthetic.
The Bad
Common weaknesses include fuel pump failures, issues with steering components like pitman and idler arms, premature brake line corrosion, and potential instrument cluster malfunctions. Exhaust manifold leaks are also a frequent complaint, alongside general rust in colder climates, particularly on rocker panels and wheel wells.
1999 GMC Sierra 2500: Quick Overview
- Engine Options:
- 5.3L Vortec 5300 V8 (LM7): Less common in the 2500, but was an option.
- 6.0L Vortec 6000 V8 (LQ4): Standard or optional for 2500 models, offering more power.
- 6.5L Turbo Diesel V8 (L65): Carried over from the previous generation for early GMT800 heavy-duty models, though being phased out.
- Horsepower:
- 5.3L V8: Approximately 270 hp.
- 6.0L V8: Approximately 300 hp.
- 6.5L Turbo Diesel: Approximately 190-215 hp.
- Fuel Economy (estimated, highly dependent on configuration and driving):
- Gas V8s: Typically in the range of 10-14 MPG combined. Heavy-duty trucks like the 2500 are not known for efficiency.
- 6.5L Diesel: Potentially slightly better, around 12-16 MPG.
- 0-60 Times:
- Gas V8s: Generally in the 8-10 second range, not a performance metric focus for these trucks.
- Towing Capacity:
- Varies significantly based on engine, axle ratio, cab, and bed configuration. Typically ranges from 7,000 lbs to over 10,000 lbs, with properly equipped models reaching higher figures.
- Trim-Level Features:
- SL (Base): Basic vinyl or cloth interior, AM/FM radio, manual windows and locks (power optional), steel wheels. Focused on utility.
- SLE (Mid-Range): Adds power windows and locks, air conditioning, cruise control, improved cloth upholstery, chrome exterior accents, upgraded audio system, and possibly alloy wheels.
- SLT (Top-Tier): Includes leather seating, automatic climate control, premium sound system, steering wheel controls, OnStar (if equipped), more extensive power features, and unique exterior styling elements like fog lights and larger alloy wheels.
- Common options across trims included different axle ratios, four-wheel drive, various bed liners, and heavy-duty towing packages.
1999 GMC Sierra 2500 Specifications
Vehicle Information
| Year | 1999 |
| Make | GMC |
| Model | Sierra 2500 |
| Trim | - |
| Style | - |
| Type | Pickup Truck |
| Category | Standard Pickup Truck |
Manufacturing Details
| Made In | United States |
| Manufacturing City | ARLINGTON |
Dimensions
| Doors | 2-Door |
| Curb Weight | 5160 pounds |
| Gross Vehicle Weight Rating | 8600 pounds |
| Overall Height | 76.00 inches |
| Overall Length | 213.40 inches |
| Overall Width | 76.80 inches |
| Wheelbase Length | 131.50 inches |
| Standard Seating | 3 |
Engine & Performance
| Engine | 5.7-L V-8 OHV 16V |
| Engine Size | 5.7L |
| Engine Cylinders | 8 |
| Transmission | 5-Speed Manual |
| Transmission Type | Manual |
| Transmission Speeds | 5-Speed |
| Drivetrain | Four-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Recirculating |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $22,043 |
| Invoice Price | $19,287 |
| Delivery Charges | - |
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What Problems Does the 1999 GMC Sierra 2500 Have?
The 1999 GMC Sierra 2500, while generally robust, does have several frequently reported problems. A common and frustrating issue is premature failure of the fuel pump, often necessitating removal of the fuel tank for replacement. Steering components, specifically the pitman arm and idler arm, are known wear items that can lead to loose steering and require periodic replacement, especially on trucks used for heavy hauling or off-road conditions. Brake lines are prone to corrosion, particularly in regions that use road salt, potentially leading to brake fluid leaks and loss of braking power. Owners frequently report instrument cluster issues, including faulty gauges (speedometer, fuel gauge), dead backlighting, or complete cluster failure; this is a common GMT800 platform issue that was addressed by GM in later years with updated parts or recalls for specific model years (though 1999 might not always be covered for all issues).
Exhaust manifold bolts breaking or exhaust manifold leaks are also common, creating ticking noises and requiring repair. The anti-lock brake system (ABS) module can also fail, leading to an illuminated ABS light and reduced braking effectiveness. Rust is a significant long-term concern, especially on rocker panels, wheel arches, and cab corners, as well as on the frame and undercarriage components, particularly in areas exposed to harsh winters. For trucks equipped with the older 6.5L Turbo Diesel, issues like PMD (Pump Mounted Driver) failure and head gasket problems were known reliability concerns carried over from previous generations. Recalls for the 1999 model year have included issues like unexpected airbag deployment, brake light switch malfunctions, and problems with seat belt retractors. Regular maintenance and diligent rust prevention are crucial for long-term reliability.
Exhaust manifold bolts breaking or exhaust manifold leaks are also common, creating ticking noises and requiring repair. The anti-lock brake system (ABS) module can also fail, leading to an illuminated ABS light and reduced braking effectiveness. Rust is a significant long-term concern, especially on rocker panels, wheel arches, and cab corners, as well as on the frame and undercarriage components, particularly in areas exposed to harsh winters. For trucks equipped with the older 6.5L Turbo Diesel, issues like PMD (Pump Mounted Driver) failure and head gasket problems were known reliability concerns carried over from previous generations. Recalls for the 1999 model year have included issues like unexpected airbag deployment, brake light switch malfunctions, and problems with seat belt retractors. Regular maintenance and diligent rust prevention are crucial for long-term reliability.
How long will the 1999 GMC Sierra 2500 last?
Based on owner data and proper maintenance habits, a 1999 GMC Sierra 2500 can reliably achieve 200,000 to 300,000 miles, with many examples exceeding this. Its large V8 engines (especially the 6.0L Vortec) and heavy-duty drivetrain components are known for their durability if regularly serviced. Key factors for longevity include consistent oil changes, transmission fluid flushes, and addressing common wear items proactively. Over time, weaknesses like rust on the body and frame, especially in salt-belt states, can significantly impact its lifespan. The aging electrical system, particularly the instrument cluster and ABS module, also becomes a more frequent concern, as do steering and suspension components due to general wear and tear from heavy use. Diligent maintenance can mitigate many of these issues, allowing these trucks to serve for well over two decades.
What Technology & Safety Features are Included?
The 1999 GMC Sierra 2500 featured a relatively straightforward array of built-in technology, reflecting its era. For entertainment, standard offerings included an AM/FM radio, with optional upgrades to a cassette player, CD player, or a combination unit. Premium sound systems were available on higher trims, offering improved audio quality. Built-in tech was basic but functional, including a digital odometer and trip meter. Higher trims like the SLT could be equipped with automatic climate control, steering wheel-mounted audio controls, and an optional OnStar system for communication and emergency services, though its functionality might be limited today.
Driver-assistance features were minimal by modern standards. The primary assistance included power steering and power brakes. There were no advanced systems like lane departure warning, blind-spot monitoring, or adaptive cruise control. The focus was on fundamental driving dynamics.
Safety features for the 1999 Sierra 2500 included standard dual front airbags for the driver and front passenger. Anti-lock brakes (ABS) were standard on most configurations, providing improved stopping power in emergency situations. Day running lights (DRL) were also standard, enhancing visibility. Crash-test ratings for heavy-duty trucks from this era are less comprehensive than today's evaluations. The National Highway Traffic Safety Administration (NHTSA) provided some frontal crash ratings, typically giving 3 or 4 stars for driver and passenger protection, but these were basic assessments and didn't cover side impact or rollover as extensively as contemporary tests. These ratings should be considered in the context of late 1990s safety standards, which are considerably different from modern vehicle safety requirements.
Driver-assistance features were minimal by modern standards. The primary assistance included power steering and power brakes. There were no advanced systems like lane departure warning, blind-spot monitoring, or adaptive cruise control. The focus was on fundamental driving dynamics.
Safety features for the 1999 Sierra 2500 included standard dual front airbags for the driver and front passenger. Anti-lock brakes (ABS) were standard on most configurations, providing improved stopping power in emergency situations. Day running lights (DRL) were also standard, enhancing visibility. Crash-test ratings for heavy-duty trucks from this era are less comprehensive than today's evaluations. The National Highway Traffic Safety Administration (NHTSA) provided some frontal crash ratings, typically giving 3 or 4 stars for driver and passenger protection, but these were basic assessments and didn't cover side impact or rollover as extensively as contemporary tests. These ratings should be considered in the context of late 1990s safety standards, which are considerably different from modern vehicle safety requirements.
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.
1999 GMC Sierra 2500 Prices and Market Value
When new, the 1999 GMC Sierra 2500 typically retailed from approximately $25,000 for a base Regular Cab to over $35,000 for a well-optioned Extended Cab SLT with 4WD. As a heavy-duty truck, it depreciated steadily like most vehicles, losing a significant portion of its value in the first few years. However, its robust nature and utility mean it holds value better than some passenger cars. Currently, used market prices for a 1999 Sierra 2500 vary widely, from $5,000 for a high-mileage, basic work truck in fair condition to $15,000 or more for well-maintained, lower-mileage examples, especially those with desirable features or diesel engines. Factors affecting resale value include overall condition, mileage, rust levels, maintenance history, 4WD capability, and the presence of the more powerful 6.0L V8 or a desirable diesel engine, though the latter is rare for this specific year.
1999 GMC Sierra 2500 Cost of Ownership
Ownership costs for a 1999 GMC Sierra 2500 are a mixed bag. Insurance premiums are generally moderate for a truck of this age, depending on coverage and driving record. Fuel costs can be significant, as its large V8 engines are not fuel-efficient, typically averaging 10-14 MPG. Maintenance is relatively straightforward and parts are widely available and affordable, making routine servicing economical. However, repairs for common issues like fuel pumps, steering components, or rust can add up. Long-term, anticipate replacing wear items like brakes, tires, and suspension components. While routine maintenance is affordable, its thirst for fuel and potential for age-related repairs make it somewhat costly to own, rather than economical, especially if neglected.
1999 GMC Sierra 2500 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
34.00 gallons
City Mileage
12 miles/gallon
Highway Mileage
16 miles/gallon
1999 GMC Sierra 2500 Safety Rating
NHTSA
IIHS
1999 GMC Sierra 2500 Recalls & Defects
Fuel System, Gasoline
Recall date
2006-05-19
Recall no.
06e043000
Source
NHTSA
Summary
Certain Replacement Fuel Filters, Fram Brand Name P/N G3727, With Date Codes X52911 Through X60801 Sequentially or X600141 and A Mexico Country or Origin Marking ON THE Fuel Filter Housing Manufactured From October 18, 2005, Through March 21, 2006, Sold FOR USE ON THE Vehicles Listed Above and ON Certain School Buses. (TO SEE THE School Bus Engine Sizes, Click ON "document Search" and Then "bus Applications"). THE Connector ON THE Fuel Filter WAS NOT Manufactured TO Honeywell's Specification. AS A Result, THE O-Ring MAY NOT Seat Correctly ON THE Fuel Line.
Consequence
This Condition MAY Cause AN Inadequate Seal AT THE Connection, Potentially Leading TO A Fuel Leak. IN THE Presence OF AN Ignition Source, A Fire Could Occur.
Remedy
Honeywell Will Notify Owners and Replace THE Fuel Filters Free OF Charge. THE Recall Began ON October 18, 2006. Owners MAY Contact Fram Customer Service AT 1-800-890-2075 (Option 1).
Notes
This Recall Only Pertains TO Aftermarket Fram Fuel Filters and HAS NO Relation TO ANY Original Equipment Installed ON THE Vehicles Listed.customers MAY Contact THE National Highway Traffic Safety Administration's Vehicle Safety Hotline AT 1-888-327-4236 (Tty: 1-800-424-9153); or GO TO Http://Www.safercar.gov.
Equipment
Recall date
2007-10-24
Recall no.
07e088000
Source
NHTSA
Summary
Certain Honeywell Fram Racing Brand HP4 and HP8 OIL Filters That Were Manufactured From MAY 25, 2006, Through September 14, 2007, and Sold FOR USE AS Replacement Equipment FOR Vehicles List Above. THE Affected Filters ARE Marked With A Date Code A61451 Through A72571 Sequentially. THE Date Code and Part Number Appear ON THE Filter Housing. Fram Racing HP4 and HP8 OIL Filters NOT Bearing A Date Code IN This Range ARE NOT Affected BY This Recall. THE Gasket OF THE OIL Filter Becomes More Pliable Under High Temperatures and Pressures.
Consequence
This Condition MAY Cause Inadequate Sealing and Loss OF Engine Oil, Possibly Resulting IN A Fire.
Remedy
Honeywell Will Replace THE Affected OIL Filters Free OF Charge. THE Recall Began During November 2007. Owners CAN Contact Fram Customer Service Toll-Free AT 1-800-890-2075.
Notes
Customers MAY Contact THE National Highway Traffic Safety Administration's Vehicle Safety Hotline AT 1-888-327-4236 (Tty: 1-800-424-9153); or GO TO Http://Www.safercar.gov.
1999 GMC Sierra 2500 Warranty
Basic
Original warranty
36 months / 36,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
36 months / 36,000 miles
Estimated remaining
Expired
Rust
Original warranty
72 months / 100,000 miles
Estimated remaining
Expired
1999 GMC Sierra 2500 Insurance
Insurance for a 1999 GMC Sierra 2500 is moderately priced, reflecting its status as a Pickup Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1999 GMC Sierra 2500 Compare to Other Pickup Truck?
The 1999 GMC Sierra 2500 competes primarily with the Ford F-250 Super Duty and the Dodge Ram 2500, both of which also saw significant updates around this period. In terms of performance, the Sierra's 6.0L Vortec V8 offered competitive power and torque for its class, often feeling more refined than the Ford's Triton V8s, though the Ford's optional 7.3L Power Stroke diesel was a dominant force, surpassing the rare 6.5L diesel in the Sierra. The Ram 2500, particularly with its Cummins diesel, was unrivaled for heavy towing power.
Regarding features, all three trucks offered similar work-oriented amenities and basic comfort options. The Sierra often had a slightly more refined interior design and ride quality compared to its immediate rivals, especially when new. However, none were rich in advanced tech or driver-assistance features by today's standards.
Reliability is a strong suit for the Sierra's 6.0L V8, often considered one of the most durable engines of its time. While the Ford 7.3L Power Stroke diesel also boasts legendary reliability, the Ford's gasoline Triton V8s had issues like spark plug ejection. The Dodge Ram 2500, while having a bulletproof Cummins diesel, could suffer from front-end suspension issues. Overall, the Sierra's powertrain reliability is highly competitive.
In terms of price, new and used, all three trucks were similarly positioned. Today, pricing largely depends on condition, mileage, and engine choice. The 7.3L Power Stroke F-250 and Cummins Ram 2500 often command higher resale values due to their diesel prowess, potentially making them "better" alternatives for specific heavy-duty applications. For a gasoline-powered heavy-duty truck, the Sierra 2500 offers a very strong, reliable, and generally more comfortable option, comparable to or even slightly better than its Ford counterpart for non-diesel needs. If supreme towing and diesel reliability are paramount, the Ford F-250 (7.3L) or Dodge Ram 2500 (Cummins) might be better alternatives.
Regarding features, all three trucks offered similar work-oriented amenities and basic comfort options. The Sierra often had a slightly more refined interior design and ride quality compared to its immediate rivals, especially when new. However, none were rich in advanced tech or driver-assistance features by today's standards.
Reliability is a strong suit for the Sierra's 6.0L V8, often considered one of the most durable engines of its time. While the Ford 7.3L Power Stroke diesel also boasts legendary reliability, the Ford's gasoline Triton V8s had issues like spark plug ejection. The Dodge Ram 2500, while having a bulletproof Cummins diesel, could suffer from front-end suspension issues. Overall, the Sierra's powertrain reliability is highly competitive.
In terms of price, new and used, all three trucks were similarly positioned. Today, pricing largely depends on condition, mileage, and engine choice. The 7.3L Power Stroke F-250 and Cummins Ram 2500 often command higher resale values due to their diesel prowess, potentially making them "better" alternatives for specific heavy-duty applications. For a gasoline-powered heavy-duty truck, the Sierra 2500 offers a very strong, reliable, and generally more comfortable option, comparable to or even slightly better than its Ford counterpart for non-diesel needs. If supreme towing and diesel reliability are paramount, the Ford F-250 (7.3L) or Dodge Ram 2500 (Cummins) might be better alternatives.
Final Verdict: Is the 1999 GMC Sierra 2500 a Good Pickup Truck?
The 1999 GMC Sierra 2500 is ideal for individuals or businesses needing a robust, capable, and relatively comfortable heavy-duty work truck for towing, hauling, or off-road utility. It's a fantastic choice for those who value mechanical simplicity and long-term durability over modern tech and fuel efficiency. It's definitely worth buying as a used vehicle, particularly if you find a well-maintained example with the 6.0L Vortec V8 and minimal rust. Look for SLE or SLT trims if you desire more comfort features. Avoid neglected trucks with significant rust or multiple unresolved electrical issues, as repairs can be costly. If you need a powerful, reliable, and relatively inexpensive heavy-duty truck that can still get the job done without breaking the bank, the '99 Sierra 2500 remains a smart, practical choice.
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.