Sierra 3500 2WD V8-6.0L (2008)
Thermostat: Specifications
J 24731 -188 tempil stick melts* at 87°C (188°F). The thermostat should begin to open.
J 24731 -206 tempil stick melts* at 97°C (206°F). The thermostat should be fully open.
*
When applied to the thermostat housing.