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The 2011 GMC Sierra 2500 Denali is a robust pickup truck powered by a 6.6L DURAMAX V8 diesel engine with a turbocharger, delivering impressive performance and capability. With a 4WD system and a gross vehicle weight rating of up to 10,000 lbs, it's built for tough jobs and off-road adventures. The truck features a hydraulic brake system and a direct TPMS, ensuring safety and reliability. Manufactured in Flint, Michigan, this Sierra model combines power, durability, and luxury in a single package.
Decoded VIN:
Make
GMC
Manufacturer Name
GENERAL MOTORS LLC
Model
Sierra
Model Year
2011
Plant City
FLINT
Series
2500
Trim
Denali
Vehicle Type
TRUCK
Plant Country
UNITED STATES (USA)
Plant Company Name
GMNA
Plant State
MICHIGAN
Body Class
Pickup
Doors
4
Gross Vehicle Weight Rating From
Class 2H: 9,001 - 10,000 lb (4,082 - 4,536 kg)
Drive Type
4WD/4-Wheel Drive/4x4
Brake System Type
Hydraulic
Engine Number of Cylinders
8
Displacement (CC)
6600.0
Displacement (CI)
402.75671102523
Displacement (L)
6.6
Engine Model
LML
Fuel Type - Primary
Diesel
Engine Configuration
V-Shaped
Other Engine Info
PTI
Turbo
Yes
Engine Manufacturer
DURAMAX
Seat Belt Type
Manual
Front Air Bag Locations
1st Row (Driver and Passenger)
Tire Pressure Monitoring System (TPMS) Type
Direct
Most common problems:
Brake fluid leaks
Hydraulic brake systems can suffer from leaks in the brake lines, master cylinder, or calipers, leading to reduced braking efficiency.
Brake pedal feels spongy
Air can enter the hydraulic brake system, causing the brake pedal to feel spongy and reducing braking effectiveness.
Warped brake rotors
Excessive heat or heavy braking can cause the brake rotors to warp, leading to vibration or pulsation when braking.
Brake pads wear out
Over time, brake pads wear down and need to be replaced to maintain effective braking.
Engine overheating
V-shaped engines, like the DURAMAX LML, can suffer from cooling system issues, leading to overheating.
Turbocharger failure
The DURAMAX LML engine is equipped with a turbocharger that can fail due to wear, oil contamination, or lack of maintenance.
Fuel injector issues
Common in diesel engines like the DURAMAX LML, fuel injectors can become clogged or fail, leading to poor engine performance.
Dpf (diesel particulate filter) clogging
The DPF can become clogged over time, causing reduced engine performance and increased emissions.
Egr (exhaust gas recirculation) valve problems
The EGR valve can become clogged or fail, leading to rough idling, reduced fuel efficiency, and increased emissions.
Glow plug failure
Essential for cold starts in diesel engines, glow plugs can fail and cause starting issues, especially in colder weather.
Transmission issues
The GMC Sierra is known to have transmission problems, such as hard shifting, slipping, or failure of the transmission solenoids.
Electrical problems
Issues with wiring or electronic components can lead to various problems, including starting issues, malfunctioning gauges, and intermittent electrical failures.
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