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The 1994 GMC Suburban is a robust Sport Utility Vehicle (SUV) with a powerful 5.7L V8 engine. It features a 4WD drive type and hydraulic brake system, making it well-suited for both on-road and off-road adventures. Manufactured by General Motors LLC in Janesville, Wisconsin, this MPV is designed for versatility and performance.

Decoded VIN:

Make

GMC

Manufacturer Name

GENERAL MOTORS LLC

Model

Suburban

Model Year

1994

Plant City

JANESVILLE

Series

1/2 Ton Nominal

Vehicle Type

MULTIPURPOSE PASSENGER VEHICLE (MPV)

Plant Country

UNITED STATES (USA)

Plant Company Name

NA - Truck Platform

Plant State

WISCONSIN

Series2

Conventional Cab

Body Class

Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)

Gross Vehicle Weight Rating From

Class 2F: 7,001 - 8,000 lb (3,175 - 3,629 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

Fuel Type - Primary

Gasoline

Engine Configuration

V-Shaped

Fuel Delivery / Fuel Injection Type

Throttle Body Fuel Injection (TBI)

Other Engine Info

LPG conversion can be accomplished on the engine

Engine Manufacturer

WRN

Most common problems:

Brake fluid leak

Hydraulic brake systems rely on brake fluid to function properly. A leak in the brake lines, master cylinder, or brake calipers can lead to reduced braking performance.

Brake master cylinder failure

The master cylinder is essential for converting pedal pressure into hydraulic pressure. If it fails, the braking system will not work effectively.

Warped brake rotors

Over time, brake rotors can warp due to high heat, leading to brake pulsation or vibration when braking.

Brake pad wear

Brake pads wear out over time and need regular replacement to ensure proper braking performance.

Engine overheating

V-shaped engines, especially older models like the 1994 GMC Suburban, can suffer from overheating issues, often due to coolant leaks or radiator problems.

Oil leaks

V8 engines are prone to oil leaks from valve cover gaskets, oil pan gaskets, or front and rear main seals.

Ignition system problems

Older V8 engines can experience issues with the ignition system, such as faulty spark plugs, ignition coils, or distributor problems.

Fuel system issues

The LPG conversion can introduce additional complexity, leading to potential problems with fuel delivery or fuel system leaks.

Exhaust manifold cracks

V8 engines can develop cracks in the exhaust manifold, leading to exhaust leaks and potential performance issues.

Timing chain/belt wear

Over time, the timing chain or belt can wear out, leading to poor engine performance or failure to start.

Vacuum leaks

Older engines can develop vacuum leaks in hoses or gaskets, leading to rough idling or poor fuel economy.