2014 GMC Sierra 1500

The 2014 GMC Sierra 1500 marked the first year of the truck’s third generation, offering a blend of capability and comfort. Engine options included a 4.3L EcoTec3 V6 (285 hp, 305 lb-ft of torque), a 5.3L EcoTec3 V8 (355 hp, 383 lb-ft of torque), and a 6.2L EcoTec3 V8 (420 hp, 460 lb-ft of torque). All engine options were paired with a 6-speed automatic transmission. Owners generally appreciated the Sierra’s comfortable ride, updated interior compared to previous generations, and available technology. Common dislikes included some reported issues with the transmission and certain electrical components.

Engine

4.3L EcoTec3 V6

• No Issues Found

5.3L EcoTec3 V8

• Active Fuel Management (AFM) Lifter Failure
  • Description/Symptoms: Ticking or knocking noise from the engine, misfires, reduced power, and potential for complete engine failure. The AFM system deactivates cylinders to improve fuel economy, but the lifters on those cylinders can fail.
  • Solution: Replacing the failed lifters, and sometimes the camshaft, is necessary. Some owners opt for deleting the AFM system entirely.
  • Estimated Cost to Fix: $2,000 - $5,000+
  • Recalls: None Found
• Excessive Oil Consumption
  • Description/Symptoms: Oil level dropping significantly between oil changes, blue smoke from the exhaust, and potential for engine damage if the oil level gets too low.
  • Solution: Revised valve cover with improved PCV system.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

6.2L EcoTec3 V8

• Active Fuel Management (AFM) Lifter Failure
  • Description/Symptoms: Ticking or knocking noise from the engine, misfires, reduced power, and potential for complete engine failure. The AFM system deactivates cylinders to improve fuel economy, but the lifters on those cylinders can fail.
  • Solution: Replacing the failed lifters, and sometimes the camshaft, is necessary. Some owners opt for deleting the AFM system entirely.
  • Estimated Cost to Fix: $2,000 - $5,000+
  • Recalls: None Found
• Excessive Oil Consumption
  • Description/Symptoms: Oil level dropping significantly between oil changes, blue smoke from the exhaust, and potential for engine damage if the oil level gets too low.
  • Solution: Revised valve cover with improved PCV system.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Transmission

6L80 6-Speed Automatic Transmission

• “Chevy Shake” or “GM Shudder”
  • Description/Symptoms: A vibration felt at highway speeds, particularly under light acceleration. This is often caused by torque converter issues.
  • Solution: Replacing the torque converter, or performing a transmission fluid flush.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Harsh Shifting
  • Description/Symptoms: Abrupt or jerky shifts between gears.
  • Solution: Transmission flush with updated fluid or valve body replacement.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Suspension

• “Chevy Lean” or “GM Lean”
  • Description/Symptoms: Uneven stance of the vehicle, with one side noticeably lower than the other.
  • Solution: Replace worn leaf springs, torsion bars, or coil springs.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Electrical

• Radio/Infotainment System Issues
  • Description/Symptoms: Freezing, screen blackouts, unresponsive touch screen, and Bluetooth connectivity problems.
  • Solution: Software updates from the dealer or replacement of the radio unit.
  • Estimated Cost to Fix: $0 (if software update resolves) - $800+ (if radio replacement is needed)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The battery drains quickly, especially when the vehicle is not in use.
  • Solution: Test and replace the battery. Check wiring.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Cracked Dash
  • Description/Symptoms: Cracks appearing on the dashboard, especially in warmer climates.
  • Solution: Dashboard replacement or installation of a dash cover.
  • Estimated Cost to Fix: $400 - $1,500+
  • Recalls: None Found

Summary

The 2014 GMC Sierra 1500 has some notable issues, particularly with the AFM lifters in the V8 engines. The 6L80 transmission can also exhibit problems such as vibrations and harsh shifting. Electrical issues, especially with the infotainment system, are also common complaints. The most serious and costly issues are related to the engine, which can potentially lead to significant repair bills. While the Sierra offers a comfortable ride and updated interior, potential buyers should be aware of these issues and carefully inspect the vehicle’s service history before purchasing.