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 $
795
1990 Chevrolet G Series Van (G20)
$
270
to $
378
1990 Chevrolet G Series Van (G20)
$
231
to $
496
1990 Chevrolet G Series Van (G20)
$
300
to $
467
1990 Chevrolet G Series Van (G20)
$
143
to $
327

1990 Chevrolet G Series Van (G20) Problems

Idling Problems Due to Vacuum Leak in Throttle Body Gasket

An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.

Alternator May Fail and Cause Noise and Dead Battery

The alternator may fail causing the battery to go dead. The charge light on the dash may or may not illuminate. The alternator may also develop an abnormal noise. A failed alternator will require replacement.

Internal Faults in Distributor Can Cause Engine Problems

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.

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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 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!
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...

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