Defrost Air Inoperative. Buick GL7 (Export) 2000

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the Air Delivery/Temperature Control Circuit Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 | Verify that the defrost air is inoperative. Does the defrost air operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 | Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement . Is the repair complete? | -- | Go to Step 4 | --

4

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components disconnected.
3. Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Symptoms