GMC Workshop Service and Repair Manuals > G 2500 3/4 Ton Van V8-305 5.0L (1990) > Engine, Cooling and Exhaust | Cooling System | Thermostat, Engine Cooling | Component Information | Specifications | Page 1873

Mechanical Specifications|Page 1874 > < Mechanical Specifications|Page 1872

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Thermostat: Testing and Inspection

Thermostat Diagnosis Chart

Refer to image for thermostat diagnosis chart.

Engine, Cooling and Exhaust
Cooling System
Thermostat, Engine Cooling / Specifications
Page 1873

Mechanical Specifications|Page 1874 > < Mechanical Specifications|Page 1872