1978 Chevrolet G20 problems
The Chevrolet Van or Chevy Van (also known as the Chevrolet/GMC G-series vans and GMC Vandura) is a range of vans that was manufactured by General Motors from the 1964 to 1996 model years. Introduced as the successor for the rear-engine Corvair Corvan/Greenbrier, the model line also replaced the panel van configuration of the Chevrolet Suburban. The vehicle was sold both in passenger van and cargo van configurations as well as a cutaway van chassis that served as the basis for a variety of custom applications.
Produced across three generations (1964–66, 1967–70, and 1970–96), the model line was sold under a wide variety of model names under both the Chevrolet and GMC brands. The first two generations were forward control vehicles (with the engine placed between the seats); the third generation adopted a configuration placing the engine forward of the driver. The second and third generations shared powertrain commonality with the C/K pickup truck model line.
After the 1996 model year, GM retired the G-Series vans, replacing them with the GMT600-platform Chevrolet Express and GMC Savana.
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Common 1978 Chevrolet G20 problems
The Chevrolet G20, produced in 1978, has been known to have several common problems based on complaints from owners. This issue can lead to a decrease in the overall performance of the vehicle and can potentially cause severe engine damage if not addressed promptly.
Another common problem with the Chevrolet G20 is related to the transmission. Some owners have reported experiencing a "clunk" sound, which is often accompanied by a significant power loss, especially when going up hills or accelerating rapidly. This issue can be caused by a leak in the transmission fluid, which can lead to a decrease in the fluid level and ultimately result in damage to the transmission.
The cabin lights of the Chevrolet G20 are also known to have issues, with some owners reporting that they do not work at all. This problem is often caused by a burned-out bulb, which can be easily replaced. However, due to the age of the vehicle, some owners may choose to prioritize more pressing issues before addressing this one.
The ignition system of the Chevrolet G20 can also be problematic, with some owners reporting difficulty engaging the ignition at first, requiring two hands to start the engine. This issue can be caused by a variety of factors, including a faulty ignition switch or a weak battery.
The engine of the Chevrolet G20 is also known to have issues, with some owners reporting that it occasionally sputters out, especially in parking lots or during gear shifts. This issue can be caused by a variety of factors, including a faulty fuel pump or a clogged fuel filter.
The power brakes of the Chevrolet G20 can also fail occasionally, which can be a major safety concern. This issue is often caused by a leaky vacuum hose, which can be easily replaced.
The sliding door of the Chevrolet G20 can also be problematic, with some owners reporting that the top rear hinge is weak and the door sags or is difficult to close. This issue can be caused by a faulty hinge, which may need to be replaced.
The water pump of the Chevrolet G20 is also known to have issues, with some owners reporting that it whines a lot. This issue can be caused by a variety of factors, including a faulty water pump or a loose belt.
In summary, the Chevrolet G20 has several common problems based on complaints from owners, including leaks in the intake manifold gaskets, transmission issues, cabin light problems, ignition issues, engine problems, power brake failures, and sliding door hinge issues. These problems can lead to a decrease in the overall performance of the vehicle and can potentially cause severe damage if not addressed promptly.
What is the gas mileage on a Chevy G20?
The 1992 G-Series G20 gets 17 MPG overall, with 15 MPG in the city and 20 MPG on the highway.
Is a Chevy G20 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.
Why won't my Chevy G20 turn over?
The most common reasons a Chevrolet G20 won't start are a dead battery, an alternator problem, or failed starter.
What is the last year of the G20 van?
The 1971-1996 G-Series was sold by Chevrolet and GMC, and it was available in ½-ton (G10), ¾-ton (G20) and 1-ton (G30) configurations.
What is the fuel consumption of the Chevy van G20?
Used 1995 Chevrolet Chevy Van G20 - Specs & Features
| Fuel & MPG | |
|---|---|
| EPA city/highway MPG | 15/20 MPG |
| EPA combined MPG | 16 MPG |
| Range in miles (city/hwy) | 495.0/660.0 mi. |
| Fuel tank capacity | 33.0 gal. |
Why won't my Chevy G20 turn over?
The most common reasons a Chevrolet G20 won't start are a dead battery, an alternator problem, or failed starter.
Is a Chevy G20 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.
Did Chevy make a G20 truck?
The 1971-1996 G-Series was sold by Chevrolet and GMC, and it was available in ½-ton (G10), ¾-ton (G20) and 1-ton (G30) configurations. The passenger versions were known as the Sportvan (Chevrolet) and Rally (GMC), while the cargo versions were called the Chevy Van (Chevrolet) and Vandura (GMC).
1978 Chevrolet G20 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Chevrolet G20 problems, we found that the most common problems with these 2023 model year vehicles are:
- Service brakes problems
- Hydraulic problems
The graph below shows statistics for all 1978 Chevrolet G20 vehicle components and the number of complaints received.
1978 Chevrolet G20 complaints
The NHTSA has received 1 complaints about various vehicle components related to the 1978 Chevrolet G20.
SERVICE BRAKES, HYDRAULIC PROBLEM
- Date Of Incident: 1995-05-16
- Components: SERVICE BRAKES, HYDRAULIC
- Summary: THE CLAMP ON THE FRONT FLEXIBLE BRAKE HOSE IS SO TIGHT THAT AFTER TIME WITH RUBBER SWELLING AND CLAMP RUSTING IT STOPS ALL FLOW OF FLUID TO THE BRAKES. TT
1978 Chevrolet G20 recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 3 recalls for different components of the 1978 Chevrolet G20.
- Manufacturer: HONEYWELL INTERNATIONAL, INC.
- Components: EQUIPMENT
- Summary: CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. THE AFFECTED FILTERS ARE MARKED WITH A DATE CODE A61451 THROUGH A72571 SEQUENTIALLY. THE DATE CODE AND PART NUMBER APPEAR ON THE FILTER HOUSING. FRAM RACING HP4 AND HP8 OIL FILTERS NOT BEARING A DATE CODE IN THIS RANGE ARE NOT AFFECTED BY THIS RECALL. THE GASKET OF THE OIL FILTER BECOMES MORE PLIABLE UNDER HIGH TEMPERATURES AND PRESSURES.
- Consequence: THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.
- Remedy: HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 2007. OWNERS CAN CONTACT FRAM CUSTOMER SERVICE TOLL-FREE AT 1-800-890-2075.
- Manufacturer: MARK III INDUSTRIES, INC.
- Components: SEAT BELTS:FRONT:ANCHORAGE
- Consequence: OCCUPANTS WOULD NOT BE ADEQUATELY PROTECTED IN EVENT OFAN ACCIDENT OR SUDDEN STOP.
- Remedy: INSTALL PROPER MOUNTING HARDWARE AND SEAT BELTS.
- Manufacturer: GENERAL MOTORS CORP.
- Components: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
- Summary: ON THE INVOLVED VEHICLES, AN INTERFERENCE CONDITION MAY EXIST BETWEEN THE CARBURETOR FUEL PIPE ASSEMBLY AND THE AIR CONDITIONING BRACKET. THIS COULD EVENTUALLY CAUSE THE PIPE TO WEAR THROUGH DUE TO VIBRATION AND FUEL PRESSURE PULSATION.
- Remedy: DEALER WILL INSPECT AND, IF NECESSARY, REPOSITION THE CARBURETOR FUEL PIPE AT NO CHARGE.
Other years of Chevrolet G20
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