Relay Block - Body Bottom View

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Fig 1: Relay Block - Body Bottom View

Courtesy of GENERAL MOTORS CORP.

Relay Block - I/P - C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193905 68-Way F Metri-Pack 280 Series Flexlock (GRY)
Pin	Wire Color	Circuit No.	Function
A1	LT GRN	24	Backup Lamp Supply Voltage - BCM
A1	LT GRN	24	Backup Lamp Supply Voltage - Junction Block - Rear
A2	-	-	Not Used
A3	BLK/WHT	1704	Low Reference
A4	DK GRN/ WHT	636	Ambient Air Temperature Sensor Signal
A5	BLK/WHT	1851	Ground
A5	BLK/WHT	1851	Ground
A6	WHT	193	Rear Defog Relay Control
A7	-	-	Not Used
A8	BRN/WHT	230	Instrument Panel Lamps Dimming Control
A8	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/Y91)
A9	YEL	1139	Ignition 1 Voltage
A10	-	-	Not Used
A11	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/NP1/NP8/NR4)
A11	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/VSES)
A12	GRY/BLK	690	Courtesy Lamp Supply Voltage
B1	PNK	1045	Serial Communications Circuit (w/o Y91)
B2	ORN	3740	Battery Positive Voltage (UQ7 w/o Y91)
B3	BLK/WHT	1851	Ground
B3	BLK/WHT	1851	Ground
B4	-	-	Not Used
B5	BLK/WHT	1851	Ground
B5	BLK/WHT	1851	Ground
B6	ORN	1840	Battery Positive Voltage
B7	RED	642	Battery Positive Voltage
B8	BRN/WHT	230	Instrument Panel Lamps Dimming Control
	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/JL4)
	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/NYS)
B9	DK GRN/WHT	817	Vehicle Speed Signal (UQ7 w/Y91)
B9	DK GRN/WHT	817	Vehicle Speed Signal
B10	-	-	Not Used
B11	ORN	3240	Battery Positive Voltage (w/o Y91)
B12	-	-	Not Used
C1	ORN	340	Battery Positive Voltage (w/YE9)
C2	BRN/WHT	230	Instrument Panel Lamps Dimming Control
C2	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/YE9)
C3	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/YE9)
C3	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/U1S)
C4	ORN	1732	Inadvertent Power Supply Voltage
C5	BLK/WHT	1851	Ground
C8	BRN/WHT	230	Instrument Panel Lamps Dimming Control
C8	BRN/WHT	230	Instrument Panel Lamps Dimming Control
C9	ORN	1340	Battery Positive Voltage
C10	BRN	2409	Interior Park Lamps Supply Voltage
C11	ORN	1732	Inadvertent Power Supply Voltage (w/Y91)
C11	ORN	1732	Inadvertent Power Supply Voltage (Avalanche/Escalade EXT)
C12	-	-	Not Used
D1	WHT/BLK	5515	Inside Air Temperature Sensor Assembly Control (w/CJ2)
D2	BRN/WHT	230	Instrument Panel Lamps Dimming Control
D3	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/T89/-Y91)
D3	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/UM8)
D4	ORN	1732	Inadvertent Power Supply Voltage
D5	BLK/WHT	1851	Ground
D5	BLK/WHT	1851	Ground (w/U42)
D8	BLK/WHT	1851	Ground
D8	BLK/WHT	1851	Ground (w/Y91)
D9	BLK	1050	Ground
D10	BRN	2409	Interior Park Lamps Supply Voltage (906 w/NYS)
D11	-	-	Not Used
D12	ORN	2340	Battery Positive Voltage (w/VYU)
E1	BRN	718	Low Reference (w/CJ2)
E2	PNK	1691	Automatic Day/Night Mirror Low Reference (w/DL3)
E3	-	-	Not Used
E4	PPL/WHT	1382	LED Dimming Signal
E4	PPL/WHT	1382	LED Dimming Signal (w/NP1/NP8/NR4)
E5	BLK/WHT	1851	Ground (w/AU3/-YE9)
E5	BLK/WHT	1851	Ground (w/UQ7/Y91)
E6	DK GRN/WHT	817	Vehicle Speed Signal
E6	DK GRN/WHT	817	Vehicle Speed Signal (w/NYS)
E7	PPL/WHT	1382	LED Dimming Signal
E7	PPL/WHT	1382	LED Dimming Signal
E8	BLK/WHT	1851	Ground - BCM - C2
E8	BLK/WHT	1851	Ground - BCM - C3
E9	-	-	Not Used
E10	RED	242	Battery Positive Voltage
E11-E12	-	-	Not Used
F1	DK GRN	734	Inside Air Temperature Sensor Signal (w/CJ2)
F2	GRY	1690	Automatic Day/Night Mirror Signal (w/DL3)
F3	PNK	739	Ignition 1 Voltage
F4	TAN/WHT	1384	Selective Ride Control Switch Signal
F5	BLK/WHT	1851	Ground (w/NP1/NP8)
F5	BLK/WHT	1851	Ground (w/U2K/U2L & Y91)
F6	PPL/WHT	1382	LED Dimming Signal (w/Z75 or T79)
F6	PPL/WHT	1382	LED Dimming Signal (w/NYS)
F7	ORN	4540	Battery Positive Voltage
F7	ORN	4540	Battery Positive Voltage (w/ T79)
F8	BLK/WHT	1851	Ground (w/ Y91)
F8	BLK/WHT	1851	Ground (Export Only)
F9	LT BLU	1620	Trailer CHMSL Supply Voltage
F10	DK BLU	47	Trailer Auxiliary Supply Voltage (w/o LU3)
F11	YEL	243	Accessory Voltage
F12	-	-	Not Used

Relay Block - I/P - C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15328768 12-Way F Metri-Pack 280 Series Flexlock (BRN)
Pin	Wire Color	Circuit No.	Function
A	LT GRN	24	Backup Lamp Supply Voltage
B	ORN	4540	Battery Positive Voltage
C	BLK	1050	Ground
D	-	-	Not Used
E	YEL	1139	Ignition 1 Voltage
F	DK GRN	2308	Passenger Air Bag OFF Indicator Control (w/ALO)
G	BLK/WHT	1704	Low Reference (w/YE9)
H	DK BLU	2307	Passenger Air Bag ON Indicator Control (w/ALO)
J	-	-	Not Used
K	DK GRN/WHT	636	Ambient Air Temperature Sensor Signal (w/YE9)
L	GRY/BLK	690	Courtesy Lamp Supply Voltage
L	GRY/BLK	690	Courtesy Lamp Supply Voltage (Avalanche/Escalade EXT)
M	ORN	1732	Inadvertent Power Supply Voltage

Relay Block - I/P - C4 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193922 6-Way F Metri-Pack 280 Series Flexlock (CRM)
Pin	Wire Color	Circuit No.	Function
A	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/YE9)
A	BRN/WHT	230	Instrument Panel Lamps Dimming Control (w/C36 or C69)
B	PNK	1691	Automatic Day/Night Mirror Low Reference (w/DL3)
C	GRY	1690	Automatic Day/Night Mirror Signal (w/DL3)
D	DK GRN	734	Inside Air Temperature Sensor Signal (w/CJ2)
E	BRN	718	Low Reference (w/CJ2)
F	WHT/BLK	5515	Inside Air Temperature Sensor Assembly Control (w/CJ2)

Relay Block - I/P - C7 Connector End View (Z82 w/Electric Trailer Brake Jumper Installed)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193924 6-Way F Metri-Pack 280 Series Flexlock (BRN)
Pin	Wire Color	Circuit No.	Function
A	BRN	2409	Interior Park Lamps Supply Voltage
B	RED	242	Battery Positive Voltage
C	DK BLU	47	Trailer Auxiliary Supply Voltage
D	LT BLU	1620	Trailer CHMSL Supply Voltage
E	-	-	Not Used
F	BLK	1050	Ground

Relay Block - I/P - C8 Connector End View (w/VYU)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193930 6-Way F Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	ORN	2340	Battery Positive Voltage
B-D	-	-	Not Used
E	ORN	4540	Battery Positive Voltage
F	BLK	1050	Ground

Relay Block - I/P - C9 Connector End View (Except Y91)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12194035 12-Way F Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	-	-	Not Used
B	PNK	1045	Serial Communications Circuit
C	-	-	Not Used
D	ORN	3740	Battery Positive Voltage (UQ7)
E	ORN	340	Battery Positive Voltage (w/UK6)
E	ORN	340	Battery Positive Voltage (w/U2K/U2L)
F-G	-	-	Not Used
H	ORN	3240	Battery Positive Voltage (w/UE1)
H	ORN	3240	Battery Positive Voltage (w/UE1)
J	ORN	3240	Battery Positive Voltage (w/U42)
K	BLK/WHT	1851	Ground (UE1)
K	BLK/WHT	1851	Ground (w/U42)
L	BLK/WHT	1851	Ground (w/UE1)
M	BLK/WHT	1851	Ground (UQ7)
M	BLK/WHT	1851	Ground (w/U2K/U2L)

Relay Block - I/P - C10 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357030 12-Way F Metri-Pack 280 Series Flex-Lock (WHT)
Pin	Wire Color	Circuit No.	Function
A	ORN	4540	Battery Positive Voltage - LR Heated Seat Module (w/Y91)
A	ORN	4540	Battery Positive Voltage - RR Heated Seat Module (w/Y91)
B	GRY/BLK	690	Courtesy Lamp Supply Voltage (Suburban/Escalade ESV)
C	GRY/BLK	690	Courtesy Lamp Supply Voltage - LR Door
C	GRY/BLK	690	Courtesy Lamp Supply Voltage - RR Door
D	DK GRN	2308	Passenger Air Bag OFF Indicator Control (w/ALO)
E	ORN	1440	Battery Positive Voltage
F	BRN/WHT	230	Instrument Panel Lamps Dimming Control
F	BRN/WHT	230	Instrument Panel Lamps Dimming Control
G	DK BLU	2307	Passenger Air Bag ON Indicator Control (w/ALO)
H	ORN	1440	Battery Positive Voltage
J	DK GRN/WHT	817	Vehicle Speed Signal (w/Z75)
K	ORN	1340	Battery Positive Voltage
L	PPL	293	Rear Defog Element Supply Voltage
M	YEL	1139	Ignition 1 Voltage
M	YEL	1139	Ignition 1 Voltage (w/ALO)