2021 Chevrolet Silverado 6500 HD

Introduction

The 2021 Chevrolet Silverado 6500 HD is a heavy-duty pickup truck offered with a range of engine and transmission options. The 6.6L gasoline V8 engine produces 401 horsepower and 464 lb-ft of torque. The 6.6L Duramax Turbo-Diesel V8 engine generates 445 horsepower and 910 lb-ft of torque. Transmission choices include an Allison 1000 6-speed automatic transmission and an Allison 3000 6-speed automatic transmission.

Owners appreciate the Silverado 6500 HD’s powerful engines, durable construction, and spacious interior. However, some have reported issues in various components.

Engine

6.6L Gasoline V8

• Intake Manifold Cracking:
  • Description/Symptoms: Coolant leaks, overheating, loss of power
  • Solution: Replace intake manifold
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: NHTSA Campaign Number: 21V509
• Fuel Injector Failure:
  • Description/Symptoms: Engine misfiring, poor performance, increased fuel consumption
  • Solution: Replace fuel injectors
  • Estimated Cost to Fix: $500 - $1,000+

6.6L Duramax Turbo-Diesel V8

• EGR Cooler Failure:
  • Description/Symptoms: Reduced engine power, poor fuel economy, excessive exhaust fumes
  • Solution: Replace EGR cooler
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: NHTSA Campaign Number: 21V229
• Turbocharger Actuator Failure:
  • Description/Symptoms: Loss of boost pressure, reduced engine performance
  • Solution: Replace turbocharger actuator
  • Estimated Cost to Fix: $500 - $1,000+

Transmission

Allison 1000 6-Speed Automatic Transmission

• Shift Solenoid Failure:
  • Description/Symptoms: Transmission slipping, hard shifting, delayed engagement
  • Solution: Replace shift solenoid
  • Estimated Cost to Fix: $200 - $400+
• Torque Converter Shudder:
  • Description/Symptoms: Vibrations when accelerating or decelerating
  • Solution: Replace torque converter
  • Estimated Cost to Fix: $1,000 - $2,000+

Allison 3000 6-Speed Automatic Transmission

• No Issues Found

Suspension

• Leaf Spring Failure:
  • Description/Symptoms: Sagging rear end, uneven tire wear
  • Solution: Replace leaf springs
  • Estimated Cost to Fix: $500 - $1,000+
• Shock Absorber Wear:
  • Description/Symptoms: Poor ride quality, excessive body roll
  • Solution: Replace shock absorbers
  • Estimated Cost to Fix: $200 - $400+

Electrical

• Battery Drain:
  • Description/Symptoms: Battery dies prematurely
  • Solution: Diagnose and fix electrical drain
  • Estimated Cost to Fix: $100 - $500+
• Alternator Failure:
  • Description/Symptoms: Dimming lights, electrical accessories not working
  • Solution: Replace alternator
  • Estimated Cost to Fix: $500 - $1,000+

Exterior

• Door Handle Failure:
  • Description/Symptoms: Door handle breaks or becomes difficult to open
  • Solution: Replace door handle
  • Estimated Cost to Fix: $100 - $200+
• Tailgate Corrosion:
  • Description/Symptoms: Rust and corrosion on the tailgate
  • Solution: Replace tailgate
  • Estimated Cost to Fix: $500 - $1,000+

Interior

• Climate Control Malfunction:
  • Description/Symptoms: AC not blowing cold air, heater not working
  • Solution: Diagnose and fix climate control system
  • Estimated Cost to Fix: $200 - $1,000+
• Dashboard Squeaks and Rattles:
  • Description/Symptoms: Noises coming from the dashboard
  • Solution: Apply foam or rubber insulation to contact points
  • Estimated Cost to Fix: $100 - $200+

Summary

Overall, the 2021 Chevrolet Silverado 6500 HD is a capable heavy-duty pickup truck with various engine and transmission options. However, it has been affected by some issues, particularly in the engine, transmission, and electrical categories. The severity and cost of the issues vary, with some being minor and affordable to fix while others can be more significant and expensive.