Too Cold in Vehicle - Auxiliary (Cargo Van w/Aux Rear Heater)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
4. This checks for proper cooling system operation. This step links to Too Cold in Vehicle because system shows no sign of concern with auxiliary heater.