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1990 GMC K1500 Sierra SLE 5.7L Cooling System
Posted to GM Engine on 8/29/2008 25 Replies

This truck is getting me crazy, I have replace 2 different premiun long blocks, 4 different thermostats, 160, 180, and 190 degrees, also overheats with out thermostat, new water pump, new fan clutch twice, new radiator, ECM and laser thermometer reads only 210...

25 Replies Received (View Replies)

  Related Documents & Media  1990 GMC K1500 Sierra SLE

 
Message Closed w/FIX

car Vehicle Data

1990 GMC K1500 Sierra SLE

VIN 1GTDK14K2L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
AffectedCooling System
ConditionsOverheating
Misc.Overheating
Message Closed w/FIX

car Vehicle Data

1990 GMC K1500 Sierra SLE

VIN 1GTDK14K2L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
AffectedCooling System
ConditionsOverheating
Misc.Overheating