Chevrolet Chevy van g20 problems

Common Chevrolet Chevy van g20 problems

The Chevrolet Chevy Van G20, produced in the late 1980s and early 1990s, has been reported to have several common problems by its owners. Here are the most frequently mentioned issues, along with their possible causes and solutions:

• Transmission clunking and power loss: This issue is often described as a "clunk" sound accompanied by a significant power loss, especially when going up hills or accelerating rapidly. The problem may be related to the transmission fluid level, which can cause the transmission to overheat and malfunction. The solution is to check the transmission fluid regularly and refill it if necessary. If the problem persists, it may be necessary to replace the transmission or the torque converter.

• Idling rough and stalling: This issue is often caused by a vacuum leak, a faulty oxygen sensor, or a malfunctioning air/idle control valve. The solution is to check the vacuum lines for leaks, replace the oxygen sensor if necessary, and adjust the air/idle control valve. It is also recommended to check the fuel pressure at idle, which should be around 10 PSI, and to perform a tune-up, including replacing the spark plugs, wires, cap, rotor, fuel filter, and air filter.

• Rust and rot: This issue is common in G20 vans that are more than 20 years old, especially in areas with harsh winter conditions. The solution is to replace the rusted or rotted parts, such as the floorboards or the unibody frame rails. This can be a major repair job, but it is often necessary to ensure the safety and longevity of the vehicle.

• Engine sputtering and misfiring: This issue is often caused by a dirty or clogged carburetor, a faulty ignition system, or a malfunctioning fuel system. The solution is to clean the carburetor, replace the spark plugs and wires, and check the fuel filter and the fuel pressure. It is also recommended to check the ignition system, including the distributor cap, rotor, and ignition coil, and to perform a tune-up if necessary.

• Power brakes occasionally failing: This issue is often caused by a leaky vacuum hose or a faulty brake booster. The solution is to check the vacuum hoses for leaks and to replace the brake booster if necessary. It is also recommended to check the brake fluid level and to bleed the brakes if necessary.

In summary, the Chevrolet Chevy Van G20 has several common problems that can affect its performance, safety, and longevity. These issues can be caused by various factors, such as wear and tear, lack of maintenance, or design flaws. The solutions to these problems range from simple fixes, such as refilling the transmission fluid or replacing the spark plugs, to major repairs, such as replacing the rusted or rotted parts or the transmission. Regular maintenance and timely repairs can help prevent these issues and ensure the safe and reliable operation of the vehicle.

What is the difference between the Chevy g10 and G20?

The G-20 has heavier suspension parts such as double action shock absorbers,heavier control arm & suspension springs. The 20 series will usually a heavier rear axle housing & lower gear ratio. There is several hundred pounds difference when you compare one to another. The G-10 came with a 305 or 350 as an option.

Why won't my Chevy G20 start?

The most common reasons a Chevrolet G20 won't start are a dead battery, an alternator problem, or failed starter.

Is a Chevy G20 van a 3 4 ton?

An addition for 1967 was the G20 heavy-duty 3/4-ton version. The G-20 featured heavier suspension, a 12-bolt rear axle, and increased hauling capability with wheels having a 6-lug bolt pattern. The G20 model was available only on the 108-inch wheelbase version.

Is a 1989 G20 Chevy Van carburetor or fuel injected?

1989 G20 van with a 5.7l fuel injected throttle body.