COOLING FAN – GMC Sierra 3500 HD 2008 – SYSTEM WIRING DIAGRAMS

COOLING FAN

Cooling Fan Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for Cooling Fan Wiring Diagram for GMC Sierra 3500 HD 2008:

• (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
• (on lower right radiator support) g101
• 4.3l
• 6.6l
• 87a
• Automatic a/c
• Colnt lvl
• Cool/ fan relay 1
• Cooling fan diode 1
• Cooling fan diode 2
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant level switch (6.6l) (on bottom of surge tank)
• Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
• Except 6.6l & 4.3l
• Except 6.6l & 6.0l (vin k)
• Fan cntrl relay
• Fan lo relay
• Fan-1 fuse 60 40a
• Fan-2 fuse 62 40a
• G100 (on lower left radiator support)
• G103 (on front of right cylinder head)
• Hot at all times
• Hvac control module
• J100
• J101
• J106
• Left engine cooling fan (left front of engine compt)
• Logic
• Manual a/c
• Pwr/ trn relay
• Right engine cooling fan (right front of engine compt)
• Tan
• Under- hood fuse block (left side of engine compt)