The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
Resources for the Repair and Maintenance of your 1990 Chevrolet 3500 Pickup
1990 Chevrolet 3500 Pickup
1990 Chevrolet 3500 Pickup Problems
The inside and outside door handles are prone to breaking.
The anti-lock brake system (ABS) front wheel speed sensors are prone to failure. When a sensor fails, the ABS warning light may illuminate and/or the ABS system may activate erratically.
The power door lock actuators may become slow to operate or stop working completely and require replacement.
Power brake systems using "hydro-boost" may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. Replacement of the hydro-boost unit is the common repair to correct this concern.
1990 Chevrolet 3500 Pickup Questions and Answers
My clutch hasn't been engaging properly so I bled the slave cylinder on the manual transmission.The clutch worked fine after that but soon it started loosing it's pressure at the pedal. I...
My truck temperature tends to rise when go about 70 MPH. I flushed the system, replaced the thermostat and the clutch fan. I also pressure washed the radiator's fins.
I have a 454 1983 itaska that overheated. it still runs strong and dose not knock in neutral. what can I do?
I need the location of the dash light blubs on my 1990 chevy ck3500 pickup
brake lights not working