3 Common Chevy G20 Transmission Problems & Fixes

Last Updated on June 21, 2023 by Robert Wilson

The Chevy G20 is a full-size van that was produced by Chevrolet from the 1970s through the 1990s.

The G20 was equipped with a variety of engines and transmissions over its production run, and many of these components were troublesome.

The most common transmission problems with the Chevy G20 are related to the automatic transmission, which was used in most models.

While Chevy has issued a few recalls over the years to try and fix the problem, it seems that they haven’t been completely successful.

Chevy G20 Common Issues & Fixes

Shifting delays, grinding or jumping during acceleration, a feeling of shakiness, or a burning smell are some of the most common problems with the Chevy G20 vehicle!

There are a few different symptoms that can indicate your G20 is having transmission trouble.

If you notice that your van is hesitating when you shift gears or if it’s slipping out of gear, those are both red flags.

You may also notice that your engine revs up but your vehicle doesn’t move as quickly as it should.

1992 Chevy G20 Common Problems

The Chevy G20 van is a versatile and affordable vehicle that can be used for a variety of purposes.

Here are some of the most commonly reported issues with the 1992 Chevy G20 van:

1. Transmission problems – Many owners have reported issues with the transmission, including slipping, jerking, and overall poor performance.

2. Engine overheating – This is a common issue with older vehicles, and the G20 van is no exception.

The engine may overheat due to a variety of factors, such as a leaking radiator or coolant hose, an inadequate cooling system, or simply because the engine is getting old and worn out.

3. Leaky power steering fluid – Another common problem with the G20 van is leaks in the power steering fluid system. These leaks can cause the power steering to fail entirely, making it very difficult to steer the van.

4. Brake problems – Various brake issues have been reported by G20 owners, including premature wear, leaky brake lines, and failed calipers or wheel cylinders. In some cases, replacing the brakes entirely may be necessary to fix the problem properly.

5. Suspension problems – Rough driving conditions can take their toll on your suspension system, causing components like shocks and struts to wear out prematurely.

1995 Chevy G20 Van Problems

1. Engine overheating

2. Transmission slipping

3. Brake failure

4. Electrical problems

1993 Chevy G20 Van Problems

The Chevy G20 van has been known to have a few problems, mainly with the engine and transmission. In 1993, these vans were equipped with a 3.8L V6 engine and a 4-speed automatic transmission.

Some of the most common problems that have been reported are as follows:

Engine: -The 3.8L V6 engine is known to have issues with oil leaks. These leaks can cause the engine to overheat and eventually fail.

-The spark plugs and wires tend to go bad on these vans, causing the engine to misfire and run poorly.

-The fuel injectors can also cause issues, causing the engine to run lean and resulting in decreased performance and fuel economy. Transmission:

-The 4-speed automatic transmission is known to be problematic on these vans. Many owners have reported issues with hard shifting, delayed engagement, and even complete failure of the transmission.

1990 Chevy G20 Van Problems

If you’re the owner of a 1990 Chevy G20 van, you may be all too familiar with some of the common problems that tend to plague this vehicle.

1. Engine Trouble: One of the most common problems with the 1990 Chevy G20 van is engine trouble.

This can manifest itself in a number of ways, from stalling and sputtering to simply not starting at all.

2. Transmission Issues: Another common problem with the 1990 Chevy G20 van is transmission issues.

3. Electrical Problems: Electrical issues are also fairly common in the 1990 Chevy G20 van.

Everything from faulty headlights and taillights to electrical shorts can cause major headaches for owners . If you’re having electrical problems with your van, it’s best to have them checked out by a professional as soon as possible .

4 . Suspension/Steering Issues : Another problem area on the 1990 Chevy G20 van is suspension and steering . This can include everything from worn shocks and struts to loose steering components.

Chevy G20 Transmission Problems

What Transmission is in a 1988 G20 Van?

The 1988 G20 van came equipped with a three-speed automatic transmission. This was the only transmission option available for this model year. The three-speed automatic was replaced by a four-speed automatic in 1989.

What Transmission is in a 1990 Chevy G20 Van?

The transmission in a 1990 Chevy G20 van is a 4-speed automatic. This transmission was used in many GM vehicles of the time, including vans, trucks, and SUVs. It is a reliable transmission that is known for its durability.

What Transmission is in a 95 G20 Van?

The 1995 model year saw the introduction of a new 4-speed automatic transmission for the G20 van. This was in addition to the 3-speed automatic that had been offered previously. The new transmission was designed to provide smoother shifting and improved fuel economy.

It was also intended to be more durable, with a longer service life than the previous transmission.

How Do You Check the Transmission Fluid on a Chevy G20?

Transmission fluid helps to keep the transmission cool and lubricated, and it needs to be at the correct level for the transmission to work properly.

You should check your transmission fluid level at least once a month, and more often if you notice any problems with shifting gears or unusual noises coming from the transmission.

It’s easy to check your transmission fluid level yourself; all you need is a clean rag and some gloves.

Park your Chevy G20 on a level surface and open the hood. Locate the dipstick for the transmission (it will have “TRANS” written on it). Pull out the dipstick and wipe it clean with the rag.

Insert the dipstick all the way back into its housing, then pull it out again and check where the fluid level falls on the stick. If it’s low, add some more until it reaches between the “FULL” and “ADD” marks on the dipstick. Wipe off any excess before putting everything back together.

Transmission service on 1985 chevy G20 Van (Turbo 350)


One common issue with Chevy G20 is that the transmission may slip out of gear while the vehicle is being driven. This can be dangerous and can cause the driver to lose control of the van.

Another problem that has been reported is that the transmission may not shift properly, which can cause the engine to rev up and down excessively.

If you own a Chevy G20 or are considering buying one, it’s important to be aware of these potential transmission problems.


  • Robert Wilson

    Introducing Robert Wilson, your go-to source for automotive technical solutions. With 5 years of industry experience and a mechanical engineering background, Robert's expertise was honed at the heart of Ford Motors in Michigan back in 2010. Join him on this blog as he shares his knowledge and practical fixes to keep your vehicles running at their best.

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