GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 Transmission/Transaxle 🢒 Power Take-Off 🢒 Power Take-Off (PTO) Schematics
Figure 1:

Switch Controls
Object Number: 1870571 Size: FS
Master Electrical Component List
Power Take-Off (PTO) Description and Operation
Control Module References
Wiring Provisions - 1 of 2
AIRBAG BATT, ALC COMP, EAP, LGM, SEO B1 and SEO B2 Fuses
AMP, ELEC RUN BOARD, ESC/ALC EXH, EXP/PTO, INFOTMNT, and TREC Fuses
Ignition II/III Voltage
RUN/CRANK BUS - AIRBAG IGN, MISC IGN and SEO/ALC Fuses
Dimming Control and LED Dimming 1 of 3
LED Dimming 3 of 3
Wiring Provisions - 1 of 2
Stop Lamp Controls and CHMSL
Serial Data Communication Enable
Wiring Provisions - 2 of 2
Wiring Provisions - 1 of 2
Figure 2:

Wiring Provisions - 1 of 2
Object Number: 1870572 Size: FS
Master Electrical Component List
Power Take-Off (PTO) Description and Operation
Control Module References
Wiring Provisions - 2 of 2
Switch Controls
Switch Controls
Switch Controls
High Speed Bus - 1 of 3
G106 (4.3L) and G103
Figure 3:

Wiring Provisions - 2 of 2
Object Number: 1870573 Size: FS
Master Electrical Component List
Power Take-Off (PTO) Description and Operation
Control Module References
Wiring Provisions - 1 of 2
G106 (4.3L) and G103
Switch Controls
Switch Controls
High Speed Bus - 3 of 3 (Diesel)