Glow Plug Control Module (GPCM) Connector End Views

Glow Plug Control Module (GPCM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15443870 1-Way F Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	RD	1	Battery Positive Voltage

Glow Plug Control Module (GPCM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		DOC00056511 53-Way F Kostal, Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	OG/BK	HB13	Glow Plug 3 Supply Voltage
2	WH/D-GN	HB12	Glow Plug 2 Supply Voltage
3	WH/RD	HB11	Glow Plug 1 Supply Voltage
4	WH/YE	HB14	Glow Plug 4 Supply Voltage
5	-	-	Not Used
6	WH/RD	HB18	Glow Plug 8 Supply Voltage
7	OG	HB15	Glow Plug 5 Supply Voltage
8	WH/L-GN	HB16	Glow Plug 6 Supply Voltage
9	PK	HB17	Glow Plug 7 Supply Voltage
10-25	-	-	Not Used
26	YE	IC182	IAH Command 2
27	RD	IC185	IAH Feedback Signal
28	BK	IC180	IAH Temperature Signal
29	PK	IC183	IAH Current Signal
30	TN	IC184	IAH Voltage Signal
31	OG	IC181	IAH Command 1
32-42	-	-	Not Used
43	TN	2501	High Speed GMLAN Serial Data Bus (-)
44	TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
45	TN	2501	High Speed GMLAN Serial Data Bus (-)
46	TN/BK	2501	High Speed GMLAN Serial Data Bus (+)
47-50	-	-	Not Used
51	RD	HB03	Ground
52	PK	439	Ignition 1 Voltage
53	PK	1020	Ignition 0 Voltage