GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon XL - 4WD 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 HVAC Component Views
Figure 1:

Sunload Temperature Sensor/Daytime Running Lamp (DRL) Sensor
Object Number: 667799 Size: MF
(1)Instrument Panel Upper Trim Panel
(2)Sun Load Temperature Sensor
(3)DRL/AHL Ambient Light Sensor
Figure 2:

Front Heater Temperature Sensor Auto HVAC
Object Number: 618704 Size: MF
(1)Front Floor Duct Assembly
(2)Front Heater Temperature Sensor
Figure 3:

Rear Auxiliary HVAC Module
Object Number: 618737 Size: MF
(1)Inner Side Body Panel
(2)Auxiliary Heater and A/C Module
(3)A/C and Heater Duct Assembly
Figure 4:

Rear HVAC Harness
Object Number: 573929 Size: LF
(1)Inner Body Side Panel
(2)Splice Pack 410 (SP410)
(3)Splice Pack 410A (SP410A)
(4)Blower Motor Connector
(5)Auxiliary HVAC Module
(6)Heater Temperature Sensor
(7)Mode Door Connector
(8)Inline Connector 350 (Auxiliary HVAC Harness Side)
(9)Inline Connector 350 (Headliner Harness Side)
(10)Inline Connector 397 (Auxiliary HVAC Harness Side)
(11)Inline Connector 397 (RH Body Harness Side)