Most common 2000 GMC Sierra 2500 problems
Share of the 48 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 →
2000 GMC Sierra 2500 recalls (1)
Service brakes, hydraulic › Power assist › Vacuum
Vehicle description: light duty pickup trucks and sport utility vehicles equipped with vacuum power, 4-wheel disc brakes. These vehicles fail to comply with the requirements of FMVSS no. 105, "hydraulic brake systems." these vehicles were built with a kinked brake booster vacuum supply hose.
Remedy: Dealers will re-route the brake booster vacuum supply hose.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2000 GMC Sierra 2500:
Hydraulic pump shaft failures
The preliminary evaulation is being upgraded.during the ea odi will limitits investigation to only those vehicles equipped with a hydro-boost system, which provides power assist to the braking and steering sytems.vaccuum brake booster vehicles are excluded.odi hasexpanded the scope of the ea to include model years2003 and 2004, asduring the pe, odi learned that the hydroboast pumps were modified in febraury…
What 2000 GMC Sierra 2500 owners say
Brakes all 32 →
While driving the brake and ABS lights on the instrument panel light up. This has occurred while driving of the freeway and on city streets. Sometimes these lights go off and sometimes they remain lighted. When this happens I fear that there is a problem with the brakes and have taken this matter to a mechanic. The brakes were examined and he found nothing wrong. This is very startling to the driver and of great concern. This appears on internet searches and it appears that 100,000 plus individuals have this problem. I have contacted the dealer and obviously this matter has been brought to there attention. Yet they claim they are unfamiliar and want to charge $600 to diagnose and then likely more to fix. This is obviously a lie as there is no way that one could be reading so much about this on the internet if it was not a problem in the GMC Sierra trucks. …
Tl* the contact owns a 2000 GMC Sierra 2500. While driving approximately 35 MPH, the rear of the vehicle slightly lowered towards the ground. The vehicle was driven with caution to the contact's residence. The contact inspected the vehicle and noticed that that the driver side main frame rail was fractured in the center. Additionally, the passenger side main rail was partially fractured. The failure was beyond repair. The contact mentioned that the brake line and rear cross member near the fuel tank were completely corroded. The manufacturer was not notified of the failure. The approximate failure mileage was 92,000.
Body & structure
Tl* the contact owns a 2000 GMC Sierra 2500. While driving approximately 35 MPH, the rear of the vehicle slightly lowered towards the ground. The vehicle was driven with caution to the contact's residence. The contact inspected the vehicle and noticed that that the driver side main frame rail was fractured in the center. Additionally, the passenger side main rail was partially fractured. The failure was beyond repair. The contact mentioned that the brake line and rear cross member near the fuel tank were completely corroded. The manufacturer was not notified of the failure. The approximate failure mileage was 92,000.
GMC truck frames cracking, rotting out, braking due to poor design and coating and GM won't step up and take responsibility as Toyota has. The consumer gets an unsafe vehicle because of frames giving out well before the body, the frames should be strong. In under 2 years the frame went from strong and safe to now rusted up scrap metal. American quality should be of great standards in my up most opinion being an army veteran. General motors should compansate owners or buy them back as Toyota has.
Engine & cooling
I been having a problem with the exhaust manifold bolts breaking off. I spent a ton of money replacing o2 sensors over the last 4 years. I've just currently found out that the o2 sensors were not bad, it was actually the exhaust header bolts breaking allowing my emission system to malfunction. I've had 3 bolts replaced 2 months ago at a tidy cost of $1000.00. One week ago I was driving down the road and smelled exhaust fumes in my truck cab. I took my truck to my mechanic and he found 3 more bolts on the right side of the engine broken off. Not only am I without a vehicle (because at this time I cannot afford the repair) I think general motors should correct my problem and pay for previous repairs. This is poor workman ship on their part not to mention a serious safety hazard. All GM trucks manufactured between 1999 and 2007 with v-8 engines have this problem. …
While driving 60 MPH vehicle stalled. The consumer tried to restart it, but was unable to do so. The consumer had the vehicle towed to the dealer for inspection. The mechanic replaced the electric ejection pump, however the problem recurred. No matter what speed the vehicle was going, the engine would die as the key was turned off. Sometimes the vehicle restarted immediately, but sometimes it wouldn't restart until it was "worked with." the electric injection pump was replaced for a third time. Two new alternators had been placed in the vehicle but at times, frequently killed the pump which drained the battery. The vehicle had stopped in fast moving traffic. …
2000 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 2000 GMC Sierra 2500 a good car?
Based on 48 owner complaints filed with NHTSA, the 2000 Sierra 2500 rates better than average: 49% 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 2000 GMC Sierra 2500?
The brakes — 32 complaints, 67% of all complaints for this model year, most often about antilock/traction control/electronic limited slip. Next are the body & structure (5) and engine & cooling (4).
How many recalls does the 2000 GMC Sierra 2500 have?
There is 1 recall for the 2000 GMC Sierra 2500, the most recent from August 8, 2000 (vacuum). Recall repairs are free at any authorized dealer — check whether yours has been done with the 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 2000 GMC Sierra 2500 problems happen?
The median mileage reported in complaints is about 91,000 miles; 10% 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.