Connector Part Information

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool	Service Terminal	Tray	Core Crimp	Insulation Crimp
I	Pins: 1, 32: 13579754	J-35616-42 (RD)	J-38125-553	15476168	5	F	3
II	13578883	J-35616-64B (L-BU)	J-38125-215A	SAITS-A03T-M064	14	9	9

K38 Chassis Control Module

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1	3	BK	650	Ground	I	-
2-4	-	-	-	Not Occupied	-	-
5	0.35	GY	7447	Low Reference	II	-
6	0.35	TN	2501	High Speed GMLAN Serial Data -	II	-
7	0.35	TN/BK	2500	High Speed GMLAN Serial Data +	II	-
8-9	-	-	-	Not Occupied	-	-
10	0.35	PU	7446	Fuel Line Pressure Sensor Signal	II	-
11-12	-	-	-	Not Occupied	-	-
13	0.35	D-GN/WH	465	Fuel Pump Relay Control	II	-
14	-	-	-	Not Occupied	-	-
15	0.35	PK	439	Ignition Voltage	II	-
16	2	PK	1580	Low Reference	I	-
17	0.35	L-BU	5986	Serial Data Communication Enable	II	-
18-20	-	-	-	Not Occupied	-	-
21	0.35	TN	2501	High Speed GMLAN Serial Data -	II	-
22	0.35	TN/BK	2500	High Speed GMLAN Serial Data +	II	-
23-31	-	-	-	Not Occupied	-	-
32	3	RD/WH	2940	Battery Positive Voltage	I	-
33-35	-	-	-	Not Occupied	-	-
36	0.35	BN	7445	5-Volt Reference	II	-
37-43	-	-	-	Not Occupied	-	-
44	0.5	GY	7443	Drain Wire	II	-
45-46	-	-	-	Not Occupied	-	-
47	2	GY	120	Fuel Pump Voltage	I	-

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

K38 Chassis Control Module