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The 2002 GMC Sierra 2500 is a robust pickup truck manufactured by General Motors LLC, featuring a powerful L18 V8 engine with a displacement of 8.1 liters. With its 4-wheel drive capability and Crew Cab configuration, it's designed for both heavy-duty tasks and comfortable passenger transport. Built in Flint, Michigan, this truck is equipped with a multipoint fuel injection system and runs on gasoline, making it a reliable choice for various driving conditions.

Decoded VIN:

Make

GMC

Manufacturer Name

GENERAL MOTORS LLC

Model

Sierra

Model Year

2002

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)

8100.0

Displacement (CI)

494.29232716733

Displacement (L)

8.1

Engine Model

L18

Fuel Type - Primary

Gasoline

Engine Configuration

V-Shaped

Fuel Delivery / Fuel Injection Type

Multipoint Fuel Injection (MPFI)

Cooling Type

Water

Engine Manufacturer

WRN

Most common problems:

Brake fluid leaks

Hydraulic brake systems rely on brake fluid, and leaks can lead to reduced braking efficiency and increased stopping distances.

Brake booster failure

The brake booster assists in applying the brakes. A failure can make the brake pedal hard to press and reduce braking power.

Brake pad and rotor wear

Over time, brake pads and rotors wear out and need to be replaced to maintain effective braking performance.

Engine misfires

The V-shaped, 8-cylinder engine may experience misfires due to issues with spark plugs, ignition coils, or fuel injectors.

Oil leaks

The WRN L18 engine can develop oil leaks from valve cover gaskets, oil pan gaskets, or other seals.

Coolant leaks

Coolant leaks can occur from the radiator, hoses, or water pump, leading to engine overheating.

Fuel pump failure

The fuel pump may fail, causing engine performance issues or preventing the engine from starting.

Intake manifold gasket failure

This can lead to coolant or air leaks, affecting engine performance and causing overheating or rough idling.

Throttle position sensor issues

Problems with the throttle position sensor can cause erratic idling, poor acceleration, and engine stalling.

Mass airflow sensor failure

A faulty mass airflow sensor can lead to poor fuel economy, rough idling, and reduced engine performance.

Transmission issues

The transmission may experience slipping, hard shifts, or delayed engagement, affecting vehicle drivability.

Rust and corrosion

Rust and corrosion can develop on the brake lines, fuel lines, and body, leading to potential failures and structural issues.

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