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 G Series Van (G30)
1990 Chevrolet G Series Van (G30)
1990 Chevrolet G Series Van (G30) Problems
A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
Our technicians recommend flushing the brake fluid every 60,000 miles. Brake fluid that is dirty may cause problems in the brake system.
The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
The distributor may develop internal faults. This can cause a rough running engine or stalling condition, the Check Engine Light may or may not illuminate. Our technicians tell us that the distributor should be overhauled or replaced to correct this concern.
1990 Chevrolet G Series Van (G30) Recalls (Recent)
Summary: SEAT BACK OF THE REAR BENCH SEAT MAY BREAK AWAY FROM THE SEAT CUSHION IN AN ACCIDENT.Learn more »
1990 Chevrolet G Series Van (G30) Questions and Answers
I put my GPS plug in and the fuse blows.
Is ther any way I can find out if the socket is bad?
Where is there a good Torque converter re-builder?
I have been having issues with starting my van. The starter is new. Sometimes it starts ok. An hour later, it just simply gives me a dead "click".
After trying several times, one afte...
rightside taillights out, replaced bulb's but still out, could this be a fuse, and if so which one would it be in fusepanel and amp.
1990 Chevrolet G Series Van (G30) Reviews
An excellent vehicle with some previous owner issues - such as no oil changes, lights not replaced or repaired, fuel inlet restrictor damaged/missing, missing sound system but intact radio/cassette player, and otherwise shoddy repairs to the whole of the vehicle. But, as with any gem in the rough, this vehicle has a great engine and transmission with low (for the year) miles.