1990 GMC 2500 Pickup Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 GMC 2500 Pickup

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1990 GMC 2500 Pickup Problems

Service transmission every 30,000 miles
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.
Quick-connect fittings for heater hoses may leak engine coolant

The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commonly occurs because the metal housing has become brittle, which can break and cause leaks.

Alternator May Fail and Cause Noise and Dead Battery

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

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1990 GMC 2500 Pickup Questions

82 k2500 won't start after oil line blew, afree adding oil engine will not crank over (1 answer)

I need to know if the bolt pattern for 1990 torch converter will match 1980. (1 answer)

I have a 1990 GMC Sierra and I want to know if the bolt pattern will match onto a 1980 GMC . motors are both 350's

a/c kit install (1 answer)

flushed the system, replace orifice tub, added 3 oz Pag 100 oil to new compressor, put the rest of the 8oz in accumulator, vacumed for 45 minutes. Added 1 can of r134a, compressor began cycling with short clutch runs. Low side pressure increased to 100, high side never got above 50. Removed co...

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1990 GMC 2500 Pickup Reviews

is a 1993 gmc 1500 compatible with a 1990 gmc 1500 ??? motor wize body and interior ???
I love my old truck, but it started leaking power stearing real bad. I started puting Lucas power stearing stop leak fluid in it and then sometimes when I first started it, the stearing wheel will jump and once it wouldn't turn at all. Once it freed up, it drove fine, but I am worried that it might freeze up while I am driving and cause a wreck. Is that a possibility? Is this a bad pump, ...
Very reliable truck with its 350 cu inch V8 and 4 speed trans its a deer hunting machine and gets decent mph about 16 highway and 12 city

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