Most common 1999 GMC Sierra 2500 problems
Share of the 36 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
GMC Sierra 2500 complaints by model year
Best Sierra 2500 years: 2012, 2014, 2013. Years to avoid: 2024, 2025, 2020, 2021, 2022. Compare all years →
What 1999 GMC Sierra 2500 owners say
Brakes all 22 →
2 years ago I had all of the brake lines replaced because of failure due to rust at a cost of $1000.00 I believe the cause was poor metal in the brake lines and the way the lines are attached to the body & frame help to cause the problem.
1999 GMC Sierra k2500 4x4. At just over 100K miles the advanced rust and corrosion on my steel brake lines is very bad. These are the hard galvanized lines that are in the engine compartment beneath the brake fluid reservoir near the frame, and the hard galvanized lines that run along the inside of the frame rail on the driver side (left hand side of the truck) from front to rear. This started a few years ago and has gotten progressively worse. The corrosion is in the form of rust that is flaking off in chunks. With the steel rusting and flaking away like this, it will compromise the integrity of the brake line, significantly reducing the ability for the brake lines to hold pressure, and at some point May ultimately result in brake failure. I have other GM vehicles with more miles that are older I've had since new and the brake lines have very little signs of rust and corrosion. …
Suspension
Tl contact owns a 1999 GMC Sierra 2500. The contact stated that every time he approaches a stop at approximately 10 MPH, the ABS engages and the vehicle jerks forward. The vehicle was taken to the dealer and they stated that it was not included in NHTSA campaign id number 05V379000 (service brakes, hydraulic:antilock). The dealer stated that the hub bearing needed to be replaced at the cost of $1,700. The current mileage was 120,000 and failure mileage was 96,000. Updated 12/12/07
I was making a right turn out of a parking lot and heard a load clunk. When I got home I was looking for the cause of the banging and found that the rear leaf spring shackle had rusted so bad it broke in half.
Wheels & tires
Employee driving 1999 GMC 2500 pickup towing a 2008 towmaster trailer loaded with a bobcat 325 Mini excavator northbound on I-25 at san felipe exit heard a pop, thinking it was a blown tire, tried to pull off to the right side of the road. Lost control of the vehicle, hit a passing car, hit a guardrail, crossed over the highway through another guardrail, down the concrete embankment to the road below. On the pickup both front tires were blown out as a result of landing at the bottom of the embankment (dot #k2w8yd4a, dom ???? Country of origin: vietnam). Right rear tire held air, but tread was peeled off(dot# 4tw8yd4a, dom 0806 country of origin: china). Left rear tire (dot# h2w8yd4a, dom 2906, country of origin: Korea) remained intact. All tires on the pickup were kuhmo road venture at - lt265/75r16. The right front tire of the trailer was also blown out. …
Tl contact owns a 1999 GMC Sierra with fts westlake tires. While driving 40 MPH the vehicle would shake and vibrate. The service mgr stated that the tires were out of specification and they would be unable resolve the tire issues. The current and failure mileages were 102,000.
1999 GMC Sierra 2500 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.3L 8-cyl | 4-speed automatic | RWD | 14 / 18 / 15 |
| 6.0L 8-cyl | 4-speed automatic | RWD | 11 / 15 / 12 |
EPA ratings. Class: Full-size pickup.
Frequently asked questions
Is the 1999 GMC Sierra 2500 a good car?
Based on 36 owner complaints filed with NHTSA, the 1999 Sierra 2500 rates better than average: 61% fewer complaints than a typical year of the Sierra 2500 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 1999 GMC Sierra 2500?
The brakes — 22 complaints, 61% of all complaints for this model year, most often about antilock/traction control/electronic limited slip. Next are the suspension (3) and wheels & tires (3).
How many recalls does the 1999 GMC Sierra 2500 have?
NHTSA lists no recalls for the 1999 GMC Sierra 2500. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the GMC Sierra 2500?
The best years by complaints, compared at the same age, are 2012, 2014 and 2013. Years to avoid or approach with caution: 2024, 2025, 2020, 2021 and 2022. See the full GMC Sierra 2500 years comparison.
At what mileage do 1999 GMC Sierra 2500 problems happen?
The median mileage reported in complaints is about 100,000 miles; 14% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.