2007 GMC Sierra 1500 Classic

Introduction

The 2007 GMC Sierra 1500 Classic is a versatile pickup truck that boasts a powerful engine and a comfortable interior. It is available with a range of engine and transmission options, including:

• 4.3L V6 with 4-speed automatic transmission (195 horsepower, 260 lb-ft of torque)
• 5.3L V8 with 4-speed automatic transmission (310 horsepower, 335 lb-ft of torque)
• 6.0L V8 with 6-speed automatic transmission (367 horsepower, 375 lb-ft of torque)

Owners appreciate the Sierra 1500 Classic’s ruggedness and towing capabilities, but they have also reported various issues across different components.

Engine

4.3L V6

• Intake Manifold Gasket Failure
  • Description/Symptoms: Coolant leaks, loss of coolant, rough idling, engine overheating
  • Solution: Replace intake manifold gasket
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found
• Piston Ring Failure
  • Description/Symptoms: Excessive oil consumption, blue or black smoke from exhaust
  • Solution: Overhaul engine
  • Estimated Cost to Fix: $2,500 - $4,000+
  • Recalls: None Found

5.3L V8

• Active Fuel Management (AFM) System Issues
  • Description/Symptoms: Engine misfires, reduced fuel economy
  • Solution: Deactivate AFM system or replace lifters
  • Estimated Cost to Fix: $1,000 - $1,500
  • Recalls: 14V238001
• Timing Chain Failure
  • Description/Symptoms: Engine rattling, loss of power, check engine light
  • Solution: Replace timing chain and related components
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: 11V232000

6.0L V8

• Valve Seat Recession
  • Description/Symptoms: Reduced engine performance, increased oil consumption
  • Solution: Replace cylinder heads
  • Estimated Cost to Fix: $2,000 - $3,000+
  • Recalls: None Found

Transmission

4-Speed Automatic Transmission

• Torque Converter Failure
  • Description/Symptoms: Transmission shuddering, slipping, or refusing to shift
  • Solution: Replace torque converter
  • Estimated Cost to Fix: $1,000 - $1,500
  • Recalls: None Found
• Transmission Control Module (TCM) Failure
  • Description/Symptoms: Erratic transmission shifting, check engine light
  • Solution: Replace TCM
  • Estimated Cost to Fix: $500 - $800
  • Recalls: 15V350000

6-Speed Automatic Transmission

• Transmission Cooler Lines Leaking
  • Description/Symptoms: Transmission fluid leaks, reduced transmission fluid level
  • Solution: Replace transmission cooler lines
  • Estimated Cost to Fix: $200 - $400
  • Recalls: 14V621000

Suspension

• Leaf Spring Breakage
  • Description/Symptoms: Sagging rear end, harsh ride, reduced handling
  • Solution: Replace leaf springs
  • Estimated Cost to Fix: $500 - $1,000 per side
  • Recalls: None Found
• Control Arm Bushing Wear
  • Description/Symptoms: Clunking noises, vibration, uneven tire wear
  • Solution: Replace control arm bushings
  • Estimated Cost to Fix: $200 - $400 per side
  • Recalls: None Found

Electrical

• Alternator Failure
  • Description/Symptoms: Dimming lights, difficulty starting, battery warning light
  • Solution: Replace alternator
  • Estimated Cost to Fix: $400 - $600
  • Recalls: None Found
• Body Control Module (BCM) Failure
  • Description/Symptoms: Electrical malfunctions, flickering lights, instrument cluster issues
  • Solution: Replace BCM
  • Estimated Cost to Fix: $500 - $800
  • Recalls: 14V317000

Exterior

• Door Handle Failure
  • Description/Symptoms: Door handles breaking or becoming loose
  • Solution: Replace door handles
  • Estimated Cost to Fix: $100 - $200 per door
  • Recalls: None Found

Interior

• Cup Holder Breakage
  • Description/Symptoms: Cup holders becoming brittle and breaking
  • Solution: Replace cup holders
  • Estimated Cost to Fix: $50 - $100
  • Recalls: None Found
• HVAC Blower Motor Failure
  • Description/Symptoms: No air flow from vents, loud noises from blower
  • Solution: Replace blower motor
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Summary

The 2007 GMC Sierra 1500 Classic has received mixed reviews from owners. While its powerful engine and rugged exterior are appreciated, it has also experienced a range of issues across different components. Some of the more severe issues, such as engine and transmission failures, can be costly to repair. Owners should be aware of these potential problems before purchasing a used Sierra 1500 Classic.