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International Automotive Technicians Network
No P2181?
Posted to Technical Discussion Forum on 1/26/2016 5 Replies

Subject truck had low heat output and MIL on. Infrared thermometer suggested that ECT was around 135F. Coolant level OK. Scanner confirmed ECT at 135F.

Replaced thermostat and ECT returned to normal, 195F. Heat restored.

The only 2 DTCs stored were for oxy... Login to read more.

5 Replies Received (View Replies)

 

car Vehicle Data

1999 Chevrolet Tahoe LS 5.7L

Engine5.7 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

1999 Chevrolet Tahoe LS 5.7L

Engine5.7 L
Trans4-speed Automatic (Electronic)