We don't have a lot of complaints on file for the Chevrolet G20 (although feel free to add yours here) -- probably because it's so old, no one bothers to post complaints anymore.
The 1993 Chevrolet G20 has the most complaints, & the most-reported problem is with the 1983 G20 for exhaust manifold runs too hot.
Worst Reported Problems with the G20
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Latest Owner Complaints About the G20
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brake lights do not work -- 1993 G20:
I called Chevy they told me it could be a bad ground or faulty wiring, I even had it blamed on my trailer. So I'm fixing it myself with help of a retired gm service mechanic. Read more »
This problem has been reported 1 times by other 1993 G20 owners.
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exhaust manifold runs too hot -- 1983 G20:
i bought it used, had the following work done, new radiator, wather pump, thermostat, hoses, carburetor rebuild, major tune up. runs fine on freeway, BUT! any small up hill grade when you open 4 barrel carb, the engine heats up and exhaust manifold turn cherry red!! Vacum is higher than normal. ... Read more »
This problem has been reported 1 times by other 1983 G20 owners.