Power Take-Off (PTO) Connectors

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Power Take Off (PTO) Relay

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12129716 4-Way F Metri-pack 280 FLX LK (MD GRY)
Pin	Wire Color	Circuit No.	Function
30	ORN	3440	Battery Positive Voltage
85	LT GRN	488	Power Take Off Switch - Output - Enable
86	PPL	2562	PTO Engage
87	WHT	2561	PTO Signal

Power Take Off (PTO) Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12186098 8-Way F Metri-pack 150 Series (LT GRY)
Pin	Wire Color	Circuit No.	Function
A	BRN	41	Ignition 3 Voltage
B	LT GRN	488	Power Take Off Switch - Output - Enable
C	GRY	8	Instrument Panel Lamp Supply Voltage - 1
D	GRY	397	Cruise Control On Switch Signal
E	YEL	2522	PTO Status Signal
F	BLK	1850	Ground
G	DK BLU	84	Cruise Control Set/Coast Switch Signal
H	PPL/WHT	1382	LED Dimming Signal