Engine Fails To Reach Normal Operating Temperature

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
1	Did you review the Symptoms-Engine Cooling Diagnosis information and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Engine Cooling
2	Verify that the engine does not reach normal operating temperature. Does the engine reach normal operating temperature?	System OK	Go to Step 3
3	Inspect the coolant level. Is the coolant level below the add mark?	Go to Step 4	Go to Step 5
4	Add coolant as necessary. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LM4) . Perform a cooling system pressure test. Is the repair complete?	System OK	Go to Step 5
5	Inspect for a stuck open, missing, or wrong type of thermostat. Refer to Thermostat Diagnosis . Is the thermostat operating properly?	System OK	Go to Step 6
6	Install the correct replacement thermostat. Refer to Thermostat Replacement (4.2L Engine) or Thermostat Replacement (5.3L Engine) . Is the repair complete?	System OK	Go to Step 7
7	Run the engine in order to verify the repair. Does the engine fail to reach normal operating temperature?	Go to Step 1	System OK