2024 GMC Sierra 2500 HD

The 2024 GMC Sierra 2500 HD is a heavy-duty pickup truck known for its towing capacity, powerful engine options, and available luxury features. Engine options include a 6.6L gasoline V8 producing 401 horsepower and 464 lb-ft of torque and a 6.6L Duramax turbodiesel V8 producing 470 horsepower and 975 lb-ft of torque. Both engines are paired with a 10-speed Allison automatic transmission. Owners generally appreciate the Sierra 2500 HD for its strong performance and comfortable interior, especially in higher trim levels. Some common dislikes include the truck’s large size making it difficult to maneuver in tight spaces, and the high price tag, particularly for well-equipped models.

Engine

6.6L Gas V8

• No Issues Found

6.6L Duramax Turbodiesel V8

• Fuel Injector Failure
  • Description/Symptoms: Engine misfires, rough idling, decreased fuel economy, black smoke from the exhaust, and potentially a check engine light with codes related to fuel injector performance (e.g., P0201-P0208). Some owners have reported this issue occurring at relatively low mileage.
  • Solution: Replacement of the faulty fuel injector(s). In some cases, the high-pressure fuel pump may also need to be inspected and potentially replaced to prevent future injector failures if contamination is suspected.
  • Estimated Cost to Fix: $500 - $1500+ per injector depending on location and diagnostic needs.
  • Recalls: None Found

Transmission

Allison 10-Speed Automatic

• Harsh Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing harsh or erratic shifting, particularly between certain gears. Others have described hesitation or delays in shifting, especially during acceleration or when towing.
  • Solution: Software update/reprogramming of the transmission control module (TCM). In some cases, a full transmission replacement may be required.
  • Estimated Cost to Fix: $100 - $300 for software updates; $5000 - $8000+ for transmission replacement.
  • Recalls: None Found

Suspension

• “Death Wobble”
  • Description/Symptoms: At highway speeds, the steering wheel and front axle begin to violently shake, making the vehicle nearly impossible to control. This can occur after hitting a bump or uneven surface.
  • Solution: Many possible solutions including aftermarket steering stabilizers, replacing the steering box, and ensuring proper torque specifications for the suspension components and ball joints.
  • Estimated Cost to Fix: $300 - $2000+ depending on the cause and components replaced.
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment screen freezes, becomes unresponsive, or crashes intermittently. This can affect navigation, audio, and other vehicle functions.
  • Solution: Software update/reprogramming of the infotainment system. In some cases, replacement of the infotainment unit may be necessary.
  • Estimated Cost to Fix: $0 - $200 for software updates; $500 - $1500+ for infotainment unit replacement.
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Issues with various sensors, including the blind-spot monitoring system, parking sensors, or lane departure warning system. Symptoms include false alarms, non-operation, or error messages.
  • Solution: Diagnosis and replacement of the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $800+ per sensor depending on the type and location.
  • Recalls: None Found

Exterior

• Tailgate Issues
  • Description/Symptoms: Tailgate malfunctioning, including not opening or closing properly, power tailgate not working, or the multi-flex tailgate becoming stuck.
  • Solution: Repair or replacement of the tailgate latch mechanism, hinges, or power assist components.
  • Estimated Cost to Fix: $100 - $1000+ depending on the complexity of the repair.
  • Recalls: None Found

Interior

• Seat Discomfort
  • Description/Symptoms: Owners have reported issues with seat discomfort, especially on long drives, even in higher trim levels. This includes lumbar support issues, lack of adjustability, and general discomfort with the seat cushion.
  • Solution: There is not a permanent solution, however some owners have replaced the seat cushions to solve this problem.
  • Estimated Cost to Fix: $100-500+
  • Recalls: None Found

Summary

The 2024 GMC Sierra 2500 HD appears to have some issues, with the Duramax diesel engine potentially experiencing fuel injector problems, and some owners reporting transmission issues. There are also reported issues with the infotainment system, and sensors, however these issues do not seem to be extremely prevelant. The “death wobble” is something to keep an eye on as it can be a large safety issue. The severity and cost of these issues vary, with fuel injector and transmission repairs potentially being the most expensive.