WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power Take Off (PTO) Module Connector End View

Courtesy of GENERAL MOTORS CORP.

Power Take Off (PTO) Module Connector Parts Information

Connector Part Information

OEM: 15491306
Service: See Catalog
Description: 47-Way F ASG Series (BK)

Terminal Part Information

Pins: 1, 32
Terminal/Tray: 1547616815
Core/Insulation Crimp: F/3
Release Tool/Test Probe: 15315247/J-35616-42 (RD)

Pins: 2, 6-8, 10-12, 17, 21-23, 26-29, 33-34, 37
Terminal/Tray: 7116-0370-02/14
Core/Insulation Crimp: 9/9
Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

Pins: 3, 13, 31, 45-46
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Power Take Off (PTO) Module Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	2 BK/WH	451	Ground
2	0.35 YE	970	5-Volt Reference
3	0.8 D-BU	979	Torque Limit Request Signal
4-5	-	-	Not Used
6	0.5 TN	2501	High Speed GMLAN Serial Data Bus-
7	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus+
8	0.35 PU	974	Low Reference
9	-	-	Not Used
10	0.35 L-BU	977	Remote Mode PPS
11	0.35 D-GN/WH	972	Mode Select B
12	0.35 TN	973	Mode Select C
13	0.8 BN/WH	6085	PTO Remote Engine Start Switch Signal
14-16	-	-	Not Used
17	0.35 L-BU	5986	Serial Data Communication Enable
18-20	-	-	Not Used
21	0.5 TN	2501	High Seed GMLAN Serial Data Bus-
22	0.5 TN/BK	2500	High Seed GMLAN Serial Data Bus+
23	0.35 GY/BK	976	Low Reference
24-25	-	-	Not Used
26	0.35 BN	971	Mode Select A
27	0.35 D-BU/WH	6089	PTO Remote Switch Set Signal
28	0.35 PU	2562	PTO Relay Coil Control
29	0.35 GY/BK	6086	PTO Switch Indicator Control
30	-	-	Not Used
31	0.8 L-BU	494	Engine Shut Off Signal
32	2 RD/WH	4540	Battery Positive Voltage
33	0.5 D-GN/WH	6142	PTO Engine Shutdown Signal
34	0.35 WH	975	5-Volt Reference
35-36	-	-	Not Used
37	0.5 L-BU/WH	6311	TCC Brake Signal
38-44	-	-	Not Used
45	0.8 GY	978	Remote Mode Enable Signal
46	0.8 YE	2522	PTO Engage Signal
47	-	-	Not Used

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Power Take Off (PTO) Module

Use the Manual With the Right Hardware

When to See a Mechanic