2025 GMC Sierra 3500 Problems, Recalls & Reliability
Verdict
CautionComplaint Index
73/100
#5 most-complained of 16 Sierra 3500 years
The 2025 GMC Sierra 3500 has 16 NHTSA complaints, a Complaint Index of 73, and ranks 5th worst out of 16 model years, earning a Caution verdict. Brakes are the top problem area at 31% of complaints, with one recall for a fuel pump issue.
- Complaints
- 16
- Recalls
- 1
- Crashes / fires
- 0 / 0
- Injuries / deaths
- 0 / 0
- NHTSA overall rating
- Not rated
- EPA combined MPG
- —
Top 2025 GMC Sierra 3500 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Brakes5 (31%)
- Electrical System3 (19%)
- Engine3 (19%)
- Other3 (19%)
- Collision Avoidance & Cameras2 (13%)
- Suspension, Wheels & Tires2 (13%)
- Lane Departure1 (6%)
- Steering1 (6%)
- Structure & Body1 (6%)
- Transmission & Powertrain1 (6%)
What owners report
- Trailer brake systems intermittently disconnect while towing, sometimes cutting braking capacity suddenly and dangerously.
- A power steering hose reportedly came off due to incorrect factory installation, causing loss of power steering and brakes at once.
- Vehicles lose all audio output — turn signal chimes, collision warnings, radio, and OnStar sounds — until the truck is restarted and left off for a period.
- Oil coolers have failed, letting oil mix with coolant and risking internal engine damage, reported around 40,000 miles at median failure.
- The automatic parking brake disengages on its own after being set on an incline, especially while towing.
- Turn signals and the infotainment system randomly stop working at the same time with no warning.
2025 GMC Sierra 3500 recalls
1 NHTSA recall campaign list this model year.
- NHTSA 26V129000Mar 5, 2026Fuel System11,807 vehiclesOver-the-air fix
Fuel system, gasoline:delivery:fuel pump:control/drive module
General Motors, LLC (GM) is recalling certain 2025-2026 Chevrolet Silverado 3500, and GMC Sierra 3500 vehicles with gasoline engines and dual fuel tanks (RPOs L8T and N2N). The rear fuel pump may not transfer adequate fuel to the front tank, causing an engine stall.
Risk: An engine stall increases the risk of a crash.
Remedy: The vehicle's engine control module (ECM) will be updated by a dealer or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed April 8, 2026. Owners may contact GMC customer service at 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N262544420. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 5, 2026.
2025 compared with other Sierra 3500 years
Frequently asked questions
- Is the 2025 GMC Sierra 3500 reliable?
- NHTSA lists 16 complaints for the 2025 Sierra 3500, giving it a Complaint Index of 73 and a Caution verdict. It ranks 5th worst among 16 model years of the Sierra 3500 covered.
- What is the most common problem on the 2025 GMC Sierra 3500?
- Brakes are the top problem area, accounting for 31% of complaints (5 of 16), followed by Electrical System and Engine issues, each at 19%.
- Does the 2025 GMC Sierra 3500 have any recalls?
- Yes, one recall covering the Fuel System. GM says the rear fuel pump may not transfer adequate fuel, and the remedy is an engine control module update by a dealer or over-the-air.
- How does the 2025 Sierra 3500 compare to other years?
- With a Complaint Index of 73, the 2025 model is worse than years like 2012 (index 7, Best) and 2018 (index 20, Best), but better than 2024 (index 100, Avoid) and 2022 (index 93, Avoid).
- At what mileage do 2025 Sierra 3500 problems show up?
- Engine-related complaints show a median mileage at failure of 40,000 miles.