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The 1999 GMC Sierra 2500 is a robust 3/4 ton pickup truck built for tough jobs, featuring a 5.7L V8 engine with multipoint fuel injection and a 4-wheel drive system. Manufactured by General Motors in Arlington, Texas, this truck boasts a hydraulic brake system and a gross vehicle weight rating between 8,001 - 9,000 lbs. Ideal for heavy-duty tasks, this conventional cab model comes with 2 doors and a reliable V-shaped engine configuration.

Decoded VIN:

Make

GMC

Manufacturer Name

GENERAL MOTORS LLC

Model

Sierra

Model Year

1999

Plant City

ARLINGTON

Series

2500 (3/4 Ton)

Vehicle Type

TRUCK

Plant Country

UNITED STATES (USA)

Plant Company Name

GM Truck Group

Plant State

TEXAS

Series2

Conventional Cab

Body Class

Pickup

Doors

Gross Vehicle Weight Rating From

Class 2G: 8,001 - 9,000 lb (3,629 - 4,082 kg)

Drive Type

4WD/4-Wheel Drive/4x4

Brake System Type

Hydraulic

Engine Number of Cylinders

Displacement (CC)

5700.0

Displacement (CI)

347.83534133997

Displacement (L)

5.7

Engine Configuration

V-Shaped

Fuel Delivery / Fuel Injection Type

Multipoint Fuel Injection (MPFI)

Engine Manufacturer

WRN

Most common problems:

Brake fluid leaks

Hydraulic brake systems rely on brake fluid to function properly. Leaks can cause a loss of brake pressure, leading to reduced braking performance or brake failure.

Brake pedal feels spongy

Air in the brake lines can cause the brake pedal to feel soft or spongy, reducing braking efficiency.

Worn brake pads or rotors

Over time, brake pads and rotors can wear down, reducing braking performance and causing noise or vibration when braking.

Engine misfires

V-shaped engines with multiple cylinders, like the V8 in the GMC Sierra, can experience misfires due to faulty spark plugs, ignition coils, or fuel injectors.

Oil leaks

V8 engines, especially older models, are prone to oil leaks from gaskets and seals, which can lead to reduced engine performance and potential damage.

Cooling system issues

V-shaped engines have a tendency to overheat if the cooling system is not properly maintained, leading to potential engine damage.

Timing chain or belt problems

Issues with the timing chain or belt can cause engine performance problems or even severe engine damage if not addressed promptly.

Fuel pump failure

The fuel pump can fail over time, leading to issues with fuel delivery and engine performance.

Throttle body problems

Dirty or malfunctioning throttle bodies can cause poor engine performance, rough idling, or stalling.

Transmission issues

Older GMC Sierra models may experience transmission problems such as slipping, hard shifting, or failure due to wear and tear.

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