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Decoded VIN

1GTHK23255F838180

2005 GMC Sierra

Vehicle Summary

The 2005 GMC Sierra 2500 is a robust 4WD pickup truck powered by a 6.6L V8 Isuzu diesel engine with turbocharging. It features a crew cab with four doors and a hydraulic brake system. Built in Flint, Michigan, this heavy-duty truck falls under the Class 2H weight rating, making it ideal for tough jobs.

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Complete Specifications

Make

GMC

Manufacturer Name

GENERAL MOTORS LLC

Model

Sierra

Model Year

2005

Plant City

FLINT

Series

2500 (3/4 Ton)

Vehicle Type

TRUCK

Plant Country

UNITED STATES (USA)

Plant Company Name

GM Truck Group

Plant State

MICHIGAN

Body Class

Pickup

Doors

Gross Vehicle Weight Rating From

Class 2H: 9,001 - 10,000 lb (4,082 - 4,536 kg)

Cab Type

Crew/Super Crew/Crew Max

Drive Type

4WD/4-Wheel Drive/4x4

Brake System Type

Hydraulic

Engine Number of Cylinders

Displacement (CC)

6600.0

Displacement (CI)

402.75671102523

Displacement (L)

6.6

Engine Model

LLY

Fuel Type - Primary

Diesel

Engine Configuration

V-Shaped

Turbo

Yes

Engine Manufacturer

Isuzu

Common Issues for This Vehicle

Brake fluid leaks

Over time, the hydraulic brake system in vehicles like the 2005 GMC Sierra can develop leaks in the brake lines, master cylinder, or calipers, leading to reduced braking efficiency.

Abs module failure

The Anti-lock Braking System (ABS) module can fail, causing the ABS warning light to illuminate and potentially compromising braking performance.

Brake pad and rotor wear

Regular usage can cause brake pads and rotors to wear down, requiring periodic replacement to maintain optimal braking performance.

Turbocharger failure

The Isuzu LLY V8 engine in the 2005 GMC Sierra is known for potential turbocharger issues, which can lead to reduced power and efficiency.

Injector failure

Fuel injectors on the LLY engine can become clogged or fail, causing rough idling, misfires, and reduced fuel economy.

Head gasket issues

The LLY engine may experience head gasket failures, leading to coolant leaks, overheating, and potential engine damage.

Egr valve problems

The Exhaust Gas Recirculation (EGR) valve can become clogged or malfunction, causing poor engine performance and increased emissions.

Glow plug failure

In diesel engines, glow plugs are crucial for cold starts. Failures can lead to hard starting, especially in cold weather.

Transmission problems

The transmission in the 2005 GMC Sierra can develop issues such as slipping, hard shifts, or failure due to wear and tear over time.

Electrical system issues

Older GMC Sierra models may experience electrical problems such as faulty wiring, failing sensors, and dashboard warning lights.

Fuel pump failure

The fuel pump can wear out, leading to fuel delivery issues that can cause the engine to stall or have starting difficulties.

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