COOLING FAN – GMC Cab & Chassis Sierra 3500 HD 2011 – SYSTEM WIRING DIAGRAMS

COOLING FAN

6.0L VIN G

6.0L VIN G, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011

List of elements for 6.0L VIN G, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011:

• (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
• 4.3l
• 4.8l, 5.3l & 6.2l
• 5v ref
• 6.0l
• 87a
• Computer data lines system
• Cooling fan diode 1
• Cooling fan diode 2
• Data bus (+)
• Data bus (-)
• Ect sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant temperature (ect) sensor (4.3l: left side of engine) (except 4.3l: on top of engine)
• Fan cntrl relay
• Fan hi relay
• Fan lo relay
• Fan rly ctrl
• Fan-1 fuse 60 40a
• Fan-2 fuse 62 40a
• G100 (on lower left radiator support)
• G101 (on lower right radiator support)
• Hot at all times
• J100
• J101
• Left cooling fan (left front of engine compt)
• Low ref
• Pwr/ trn relay
• Pwrtrn rly ctrl
• Right cooling fan (right front of engine compt)
• Sens sig
• Tan
• Under- hood fuse block (left side of engine compt)

6.6L VIN 8

6.6L VIN 8, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011

List of elements for 6.6L VIN 8, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011:

• 5v ref
• Automatic a/c
• Computer data lines system
• Driver information center (dic) display
• Ect sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant level switch (on bottom of surge tank)
• Engine coolant temperature (ect) sensor (top front center of engine)
• Engine cooling fan (front center of engine compt)
• Fan fuse 68 10a
• Fan rly relay
• G103 (on front of right cylinder head)
• Gnd
• Hot at all times
• Hvac control module
• Instrument panel cluster (ipc)
• J105
• J106
• Logic
• Low ref
• Manual a/c
• Rly spd sig
• Serial data
• Serial data +
• Serial data -
• Spd sig
• Sw sig
• Tan
• Underhood fuse block (left side of engine compt)
• X109
• X113
• X2 a1

6.6L VIN L

6.6L VIN L, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011

List of elements for 6.6L VIN L, Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra 3500 HD 2011:

• 5v ref
• Automatic a/c
• Computer data lines system
• Driver information center (dic) display
• Ect sens sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant level switch (on bottom of surge tank)
• Engine coolant temperature (ect) sensor (top front center of engine)
• Engine cooling fan (front center of engine compt)
• Fan fuse 68 10a
• Fan rly relay
• G103 (on front of right cylinder head)
• Gnd
• Hot at all times
• Hvac control module
• Instrument panel cluster (ipc)
• J105
• J106
• Logic
• Low ref
• Manual a/c
• Rly spd sig
• Serial data
• Serial data +
• Serial data -
• Spd sig
• Sw sig
• Tan
• Underhood fuse block (left side of engine compt)
• X109
• X113
• X2 a1