2014 GMC Sierra 2500 HD

Introduction

The 2014 GMC Sierra 2500 HD is a heavy-duty pickup truck known for its towing and hauling capabilities. It offers a range of engine and transmission options, including:

• Engine Options:
  • 6.0L V8 (360 hp, 380 lb-ft)
  • 6.6L Duramax Diesel V8 (403 hp, 765 lb-ft)
• Transmission Options:
  • 6-speed automatic (6L90)
  • Allison 1000 6-speed automatic

Owners appreciate the Sierra 2500 HD’s powerful engines, rugged design, and comfortable interior. However, some owners have reported specific issues with the vehicle.

Engine

6.0L V8

• Intake Manifold Failure
  • Description/Symptoms: Intake manifold gasket leak, causing coolant loss, overheating, and engine misfires.
  • Solution: Replace intake manifold and gaskets.
  • Estimated Cost to Fix: $1,000 - $1,500
  • Recalls: None Found

6.6L Duramax Diesel V8

• CP4 Fuel Injection Pump Failure
  • Description/Symptoms: High-pressure fuel pump failure, leading to loss of power, stalling, and engine damage.
  • Solution: Replace fuel injection pump.
  • Estimated Cost to Fix: $4,000 - $6,000+
  • Recalls: NHTSA Campaign Number 19V632000

Transmission

6-speed Automatic

• Torque Converter Shudder
  • Description/Symptoms: Transmission vibration under acceleration, especially at low speeds.
  • Solution: Replace torque converter.
  • Estimated Cost to Fix: $1,500 - $2,000
  • Recalls: None Found

Allison 1000 6-speed Automatic

• No Issues Found

Suspension

• Leaf Spring Breakage
  • Description/Symptoms: Broken leaf springs in rear suspension, causing sagging and excessive bouncing.
  • Solution: Replace leaf springs.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Battery drains rapidly, even when the vehicle is not in use.
  • Solution: Diagnose and repair electrical system issues.
  • Estimated Cost to Fix: Varies depending on cause of drain
  • Recalls: None Found

Exterior

• Tailgate Mechanism Failure
  • Description/Symptoms: Tailgate fails to open or close properly, or rattles while driving.
  • Solution: Replace tailgate mechanism.
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found

Interior

• Infotainment Screen Malfunctions
  • Description/Symptoms: Touchscreen becomes unresponsive, glitches, or displays errors.
  • Solution: Update software or replace infotainment system.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found

Summary

The 2014 GMC Sierra 2500 HD is generally a reliable vehicle, but it has some notable issues. The most severe and expensive issue is the CP4 fuel injection pump failure on the Duramax Diesel engine. Other issues, such as intake manifold failure and torque converter shudder, can also be costly to repair. However, most of the reported issues are relatively minor and affordable to resolve.