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1991 GMC K2500 Sierra SLE 7.4L Temperature
Posted to GM Engine on 7/17/2003 14 Replies

This truck overheats when pulling trailer or running ac and driving hard. weve check everything, it will run 220 on scanner going down hyway if your running fast with ac. We knocked a freeze plug out to check for buildup by cylinder wall. The clutch fan works ...

14 Replies Received (View Replies)

  Related Documents & Media  1991 GMC K2500 Sierra SLE

 
Message Closed w/Summary

car Vehicle Data

1991 GMC K2500 Sierra SLE

VIN 1GTGK24N5M
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedTemperature
ConditionsOver Heating
Message Closed w/Summary

car Vehicle Data

1991 GMC K2500 Sierra SLE

VIN 1GTGK24N5M
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedTemperature
ConditionsOver Heating