1980 Chevrolet C20 problems

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The third generation of the C/K series is a range of trucks that was manufactured by General Motors from the 1973 to 1991 model years. Serving as the replacement for the "Action Line" C/K trucks, GM designated the generation under "Rounded Line" moniker. Again offered as a two-door pickup truck and chassis cab, the Rounded Line trucks marked the introduction of a four-door cab configuration.

Marketed under the Chevrolet and GMC brands, the Rounded Line C/K chassis also served as the basis of GM full-size SUVs, including the Chevrolet/GMC Suburban wagon and the off-road oriented Chevrolet K5 Blazer/GMC Jimmy. The generation also shared body commonality with GM medium-duty commercial trucks.

In early 1987, GM introduced the 1988 fourth-generation C/K to replace the Rounded Line generation, with the company beginning a multi-year transition between the two generations. To eliminate model overlap, the Rounded Line C/K was renamed the R/V series, which remained as a basis for full-size SUVs and heavier-duty pickup trucks. After an 18-year production run (exceeded only in longevity by the Dodge D/W-series/Ram pickup and the Jeep Gladiator/Pickup), the Rounded Line generation was retired after the 1991 model year.

From 1972 to 1991, General Motors produced the Rounded Line C/K (later R/V) series in multiple facilities across the United States and Canada. In South America, the model line was produced in Argentina and Brazil, ending in 1997.

1980 Chevrolet C20

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Common 1980 Chevrolet C20 problems

Based on the complaints from owners of the Chevrolet C20 1980, here are some common problems associated with this vehicle:

  1. Windshield Wiper Motor Component Failure:
    • Models made between 1990 and 1999 may experience intermittent issues with the windshield wipers due to a defective wiper motor. This problem can cause the wipers to stop working, fail to turn on, run continuously, or only work on one speed setting. Auto manufacturers have issued recalls for this problem on some models. A temporary fix involves lightly tapping on the control box to get the wipers working again, but a more permanent solution would be to replace the wiper motor control board.
  2. Coolant Leaks or Oil Leaks From Intake Manifold Gaskets:
    • Another common issue reported is coolant leaks or oil leaks from the intake manifold gaskets. This problem can lead to coolant or oil seepage, which can result in engine overheating or loss of lubrication. It is essential to address these leaks promptly to prevent potential engine damage. Replacing the intake manifold gaskets is typically the solution to resolve this issue.
  3. Steering Wheel Position Sensor Failure:
    • Owners have reported hearing a knock or clunking noise from the steering shaft, which may be due to a failed steering wheel position sensor. This problem can trigger a service stability message in the vehicle, occurring intermittently or regularly. Replacing the sensor, which costs around $200 to $300, is the recommended fix. This issue typically arises around 90,000 miles.
  4. Failed 4WD Transfer Case Encoder Motor Position Sensors or Selector Switches:
    • Some models have experienced issues with failed 4WD transfer case encoder motor position sensors or selector switches. This can lead to difficulties in engaging or disengaging the four-wheel-drive system. Replacing these components is necessary to restore proper functionality to the 4WD system.
  5. Failed HVAC Temperature or Delivery Mode Door Actuators:
    • Another reported problem is the failure of HVAC temperature or delivery mode door actuators. This issue can result in improper functioning of the heating, ventilation, and air conditioning system, leading to issues with temperature control or air distribution. Replacing the faulty actuators is essential to maintain proper HVAC operation.

These common problems with the Chevrolet C20 1980 highlight some of the issues that owners have faced with this vehicle. Addressing these issues promptly through appropriate repairs or replacements can help ensure the continued reliability and performance of the vehicle.

1980 Chevrolet C20 engine

What engine does a Chevy C20 have?

Specifications for Chevrolet C20 Regular Cab 5.7 V8 Hydra-Matic, 167hp, 1985 4-speed.

What is the difference between a C10 and a C20?

C10 vs C20 Towing Capacity

In 1962, the two C10 options had a maximum payload capacity of 1,500 pounds for the Fleetside model and 1,550 pounds for the Stepside. The C20 had a payload capacity of 3,400 pounds in either the Fleetside or the Stepside model.

Is a C20 a 4x4?

All trucks whether be Cheyenne or custom or bare bones were either classified as C= 2WD or K=4WD. So it could be a c10 or c20 an it will be 2wd. Just as k10 or k20 it will be 4wd.

How much horsepower does a 1969 Chevy C20 have?

Under the hood, the 350 V8 engine provides an impressive amount of power, producing around 250 horsepower and 355 lb-ft of torque.

What engine does a Chevy C20 have?

Specifications for Chevrolet C20 Regular Cab 5.7 V8 Hydra-Matic, 167hp, 1985 4-speed.

What are the differences between a C10 and C20?

Chevy C10 and C20 Differences. The obvious difference between the C10 and the C20 is that one is a half-ton and the other a three-quarter-ton truck. These classifications don't refer to their respective curb weights, but rather to their payload capacity.

Is a C20 a 4x4?

All trucks whether be Cheyenne or custom or bare bones were either classified as C= 2WD or K=4WD. So it could be a c10 or c20 an it will be 2wd. Just as k10 or k20 it will be 4wd.

How long is a Chevy C20?

(base), 4.8L, Leaded Petrol, 4 SPEED MANUAL

DimensionMetricImperial
Chevrolet C20 Length5226 mm17 ft 2 in
Chevrolet C20 Wheelbase3340 mm10 ft 11 in
Chevrolet C20 Turning circle13.80 m45 ft 3 in
Chevrolet C20 Wheel size152x406 mm6.00x16 in

1980 Chevrolet C20 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Chevrolet C20 problems, we found that the most common problems with these 2023 model year vehicles are:

  • Structure problems
  • Fuel system problems
  • Gasoline problems
  • Seat belts problems
  • Seats problems

The graph below shows statistics for all 1980 Chevrolet C20 vehicle components and the number of complaints received.

1980 Chevrolet C20 complaints

The NHTSA has received 2 complaints about various vehicle components related to the 1980 Chevrolet C20.

1996-08-14

FUEL SYSTEM, GASOLINE,SEAT BELTS,STRUCTURE,SEATS PROBLEM

  • Date Of Incident: 1996-08-14
  • Crash: 1
  • VIN: JN1HU0153DT
  • Components: FUEL SYSTEM, GASOLINE,SEAT BELTS,STRUCTURE,SEATS
  • Summary: SEAT ADJUSTMENT CONTROLS TOO CLOSE TOGETHER, CAUSING ACCIDENT WHEN DRIVERS SEAT BACK FELL WHEN DRIVER WAS TRYING TO MOVE SEAT FORWARD.
1996-08-14

STRUCTURE PROBLEM

  • Date Of Incident: 1996-08-14
  • VIN: JN1HU0153DT
  • Components: STRUCTURE
  • Summary: POWER DOOR LOCKS PINCH ARM IF RESTING ARM ON DOOR SILL WHEN DRIVER PUSHES DOOR LOCK.

1980 Chevrolet C20 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 1980 Chevrolet C20.

2007-10-24
  • 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.
1981-01-13
  • Manufacturer: GENERAL MOTORS CORP.
  • Components: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
  • Summary: FATIGUE CRACKS MAY DEVELOP IN THE BRAKE VACUUM BOOSTER HOUSING. THIS MAY CAUSE A VACUUM LEAK AND REDUCE THE EFFECTIVENESS OF THE BRAKES. AFTER PROLONGED USE, THE CRACKS MAY DEVELOP TO THE EXTENT THAT THE BOOSTER MAY SEPARATE FROM THE VEHICLE.
  • Remedy: VEHICLES WILL BE INSPECTED FOR FATIGUE CRACKS IN THE BRAKE VACUUM BOOSTER. THOSE WITHOUT CRACKS WILL HAVE A SUPPORT BRACE INSTALLED. THOSE WITH EVIDENCE OF CRACKING WILL HAVE A NEW BRAKE VACUUM BOOSTER AND SUPPORT BRACE INSTALLED. THIS SERVICE WILL BE PROVIDED AT NO CHARGE.
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