1990 Chevrolet G Series Van (G20) Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Chevrolet G Series Van (G20)

Repair Estimates

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1990 Chevrolet G Series Van (G20)
$
550
to $
794
1990 Chevrolet G Series Van (G20)
$
343
to $
498
1990 Chevrolet G Series Van (G20)
$
609
to $
1,017
1990 Chevrolet G Series Van (G20)
$
71
to $
110
1990 Chevrolet G Series Van (G20)
$
186
to $
290

1990 Chevrolet G Series Van (G20) Problems

Intake Manifold Gaskets May Leak Coolant or Engine Oil

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.

Replace Fuel Filter Every 30,000 to Prevent Fuel Pump Failure

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.

Leaking Water Pump May Cause Coolant Loss and Overheating

A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.

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1990 Chevrolet G Series Van (G20) Questions

Power bed/seat quit working..is there a fuse? Or a way to fold down manually? (1 answer)

How do you remove a broken bolt from the intake manifold while still in engine? (1 answer)

While trying to replace my thermostat, I tried to remove the intake manifold and one of the bolts broke off. Now I must figure out how to remove this bolt without damaging my intake manifold.

How many quarts of transmission fluid to add if stick is dry (1 answer)

I put 6 but still low and going slow now but reverse fine and fluid drain from coolant line

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1990 Chevrolet G Series Van (G20) Recalls

Recall 91V040000
SEAT BACK OF THE REAR BENCH SEAT MAY BREAK AWAY FROM THE SEAT CUSHION IN AN ACCIDENT.
Recall 90V074000
IMPROPERLY TORQUED TIE ROD CLAMP FASTENERS COULD ALLOW THE TIE ROD TO LOOSEN AND EVENTUALLY SEPARATE.

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1990 Chevrolet G Series Van (G20) Reviews

i have a 1990 chevy g20 van and since iv had it i took it for a test drive the first day i have had it and only went about a mile and a half from home and started going up hill is when i had lost power and costed to the side of the road and would start it had sounded like i was out of gas>when i had finally made it home finally after getting it towed i had a mechanic come out and look at it and...
I had the same issue as with the idle, turned out to be a combination of a bad EGR valve and I replaces the pick up coil in the distrbutor for 22.00, just knocked out the dist. gear pin with a punch and hammer, put the new one on and it purred like a G20 kitten. Before you do that though check your fuel pressure to be between 9-13 if its lower that may be the prob.
I had the same thing happen on our 1991 g20. Found a fuse for the fuel pump was all it was! Hope this helps!

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