Blower Motor High Speed Inoperative - Auxiliary Air Conditioning (A/C). GMC Truck Safari

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1998 🢒 Safari - 4WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Blower Motor High Speed Inoperative - Auxiliary Air Conditioning (A/C)

Step	Action	Value(s)	Yes	No
1	Did you perform the HVAC Blower Controls System Check?	--	Go to Step 2	Go to HVAC Blower Controls System Check
2	Place the ignition switch in the RUN position. Place the rear air conditioning (A/C) switch in the HIGH position. Use a test lamp J 35616-200 in order to backprobe from the rear A/C switch CKT 1052 (ORN) cavity A to ground. Did the test lamp light?	--	Go to Step 3	Go to Step 4
3	Repair the open in CKT 1052 (ORN) between the rear A/C switch and the rear A/C resistor pack. Is the repair complete?	--	Go to Heater Blower Controls System Check	--
4	Inspect for a poor connection at the rear A/C switch. Did you find a poor connection?	--	Go to Step 5	Go to Step 6
5	Repair the poor connection. Is the repair complete?	--	Go to Heater Blower Controls System Check	--
6	Replace the rear A/C switch. Refer to Accessory Switch Replacement . Is the repair complete?	--	Go to Heater Blower Controls System Check	--