2009 GMC Sierra 3500 HD

The 2009 GMC Sierra 3500 HD is a heavy-duty pickup truck known for its towing and hauling capabilities. Engine options for this year include the 6.0L Vortec V8 (360 hp, 380 lb-ft of torque), the 8.1L Vortec V8 (330 hp, 450 lb-ft of torque), and the 6.6L Duramax Turbo Diesel V8 (365 hp, 660 lb-ft of torque). Transmission options include the Allison 1000 6-speed automatic (with the Duramax) and the Hydra-Matic 4L80E 4-speed automatic (with the gasoline engines). Owners often appreciate the truck’s robust build and workhorse nature, while common dislikes include fuel economy, ride quality, and some known reliability concerns.

Engine

6.0L Vortec V8

• Oil Consumption
  • Description/Symptoms: Excessive oil consumption, often exceeding 1 quart per 1,000 miles. May be accompanied by blue smoke from the exhaust.
  • Solution: In some cases, replacing the valve stem seals can help. In more severe instances, piston ring replacement is necessary.
  • Estimated Cost to Fix: $500 - $2,500+
  • Recalls: None Found
• Exhaust Manifold Bolts
  • Description/Symptoms: Broken exhaust manifold bolts, causing exhaust leaks and a ticking noise, especially noticeable on cold starts.
  • Solution: Replacing the broken bolts with new ones, often with a revised design. Sometimes, the manifold itself needs replacement if warped or damaged.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

6.6L Duramax Turbo Diesel V8 (LMM)

• Fuel Injector Failure
  • Description/Symptoms: Rough running, misfires, decreased fuel economy, and black smoke from the exhaust. May also set diagnostic trouble codes (DTCs) related to fuel injector performance.
  • Solution: Replacing the faulty fuel injector(s). It’s often recommended to replace injectors in pairs or all at once.
  • Estimated Cost to Fix: $800 - $4,000+ (depending on the number of injectors replaced)
  • Recalls: None Found
• EGR Cooler Failure
  • Description/Symptoms: Coolant loss, white smoke from the exhaust, and potential overheating.
  • Solution: Replacing the EGR cooler.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Glow Plug Failure
  • Description/Symptoms: Hard starting, especially in cold weather. Can cause the vehicle to run rough until it warms up.
  • Solution: Replace the failed glow plug or glow plugs.
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found

Transmission

Allison 1000 6-Speed Automatic

• Torque Converter Clutch (TCC) Failure
  • Description/Symptoms: Shuddering or vibration during torque converter lockup, slipping, and potential for transmission overheating.
  • Solution: Replacing the torque converter.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found
• Internal Leakage/Hard Shifting
  • Description/Symptoms: Delayed or harsh shifting, especially between certain gears. Can also lead to transmission overheating.
  • Solution: Often requires a transmission rebuild or replacement.
  • Estimated Cost to Fix: $2,500 - $6,000+
  • Recalls: None Found

Hydra-Matic 4L80E 4-Speed Automatic

• Loss of 3rd and 4th Gear
  • Description/Symptoms: Transmission slips or fails to shift into 3rd or 4th gear.
  • Solution: Typically requires a transmission rebuild or replacement.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found

Suspension

• Leaf Spring Sagging/Cracking
  • Description/Symptoms: Rear end sagging, especially when loaded. Can lead to a rough ride and reduced load-carrying capacity.
  • Solution: Replacing the leaf springs.
  • Estimated Cost to Fix: $500 - $1,500+ per side
  • Recalls: None Found
• Pitman Arm/Idler Arm Wear
  • Description/Symptoms: Loose steering, wandering, and play in the steering wheel.
  • Solution: Replacing the pitman arm and/or idler arm.
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found

Electrical

• Body Control Module (BCM) Issues
  • Description/Symptoms: Intermittent electrical problems, such as malfunctioning power windows, door locks, or lights.
  • Solution: Replacing the BCM.
  • Estimated Cost to Fix: $400 - $1,000+
  • Recalls: None Found
• Instrument Cluster Failure
  • Description/Symptoms: Gauges not working properly, dim or flickering display, or complete failure of the instrument cluster.
  • Solution: Replacing or repairing the instrument cluster.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Exterior

• Cab Corner Rust
  • Description/Symptoms: Rust forming on the lower rear corners of the cab.
  • Solution: Rust repair and body work, including cutting out the rusted areas and welding in new metal.
  • Estimated Cost to Fix: $500 - $2,000+ per side (depending on severity)
  • Recalls: None Found

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracks forming in the dashboard, especially in warmer climates due to sun exposure.
  • Solution: Replacing the dashboard (expensive) or installing a dashboard cover.
  • Estimated Cost to Fix: $200 - $2,000+ (depending on the solution)
  • Recalls: None Found
• Seat Heater Failure
  • Description/Symptoms: Seat heater stops working
  • Solution: Replace seat heater element
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Summary

The 2009 GMC Sierra 3500 HD, while a capable truck, does have its share of potential issues. Engine problems range from moderate oil consumption in the 6.0L to more serious injector issues in the Duramax diesel. Transmission issues, particularly with the Allison, can be costly to repair. Suspension and electrical problems are also common. Rust can be a concern in certain climates. Owners should be aware of these potential issues and have the truck thoroughly inspected before purchase. The severity and cost of repairs can vary widely, but some issues can lead to significant expenses.