Fuse Block - I/P Bottom View

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.

Fig 1: Fuse Block - I/P Bottom View

Courtesy of GENERAL MOTORS CORP.

Fuse Block - I/P C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193906 68-Way F Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	LT BLU	244	Passenger Door Lock Switch Lock Supply Voltage (AU3 w/o YE9)
A2	GRY/BLK	255	Power Door Lock Fuse Supply Voltage (Crew Cab w/YE9)
A3	-	-	Not Used
A4	DK BLU	245	Passenger Door Lock Switch Unlock Supply Voltage (AU3 w/o YE9)
A4	TAN/BLK	254	Power Door Unlock Fuse Supply Voltage (Crew Cab w/YE9)
A5	-	-	Not Used
A6	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
A7	ORN	4240	Battery Positive Voltage (Except Base)
A8	YEL	1618	Trailer Left Rear Turn/Stop Lamp Supply Voltage
A9	DK GRN	1619	Trailer Right Rear Turn/Stop Lamp Supply Voltage
A10	-	-	Not Used
A11	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
A11	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
A12	RED	42	Battery Positive Voltage
B1	YEL	143	Accessory Voltage
B2	YEL	43	Accessory Voltage
B3	YEL	1977	Rear Fog Lamp Relay Control (Export - BCM)
B3	YEL	1977	Rear Fog Lamp Relay Control (Export - Dimming)
B4-B5	-	-	Not Used
B6	LT GRN	1391	Driver Door Unlock Relay Control (AU3 w/o YE9)
B7	-	-	Not Used
B8	WHT	17	Stop Lamp Switch Signal
B9-B10	-	-	Not Used
B11	LT BLU	195	Door Lock Control (AU3 w/o YE9)
B11	LT BLU	195	Door Lock Control (AU3 w/o YE9)
B12	ORN	2140	Battery Positive Voltage
C1	-	-	Not Used
C2	BRN	141	Ignition 3 Voltage (C42)
C3	-	-	Not Used
C4	BRN	41	Ignition 3 Voltage
C4	BRN	41	Ignition 3 Voltage (w/PTO or K34)
C5	BRN	441	Ignition 3 Voltage (NW7)
C8	LT BLU	1620	Trailer CHMSL Supply Voltage
C8	LT BLU	1620	Trailer CHMSL Supply Voltage
C9	GRY	295	Door Lock Actuator Lock Control (w/o YE9)
C10-C12	-	-	Not Used
D1	YEL	243	Accessory Voltage
D2	-	-	Not Used
D3	BRN	341	Ignition 3 Voltage - HVAC Control Module
D3	BRN	341	Ignition 3 Voltage - Fuse Block - Right I/P
D4	-	-	Not Used
D5	BRN	441	Ignition 3 Voltage - Stop Lamp Switch
D5	BRN	441	Ignition 3 Voltage - EBCM
D6-D8	-	-	Not Used
D9	WHT	194	Door Unlock Control (AU3 w/o YE9)
D9	WHT	194	Door Unlock Control (AU3 w/o YE9)
D10	BLK/WHT	1851	Ground
D11	TAN	294	Door Lock Actuator Unlock Control (AU3 w/o YE9)
D12	BRN	541	Ignition 3 Voltage (NYS)
E1	BRN	241	Ignition 3 Voltage (TP2)
E2	BRN	241	Ignition 3 Voltage - Front Axle Actuator (NP1/NP2/NP8)
E2	BRN	241	Ignition 3 Voltage - Transfer Case Control Switch (NP1/NP8)
E3	RED	122	Rear Fog Lamp Supply Voltage (Export)
E4	GRY	118	Left Front Door Speaker Output (-) (UQ3/UQ5/UQ7)
E5	BRN	1046	DDM Class 2 Serial Data (YE9)
E6	-	-	Not Used
E7	PNK	1691	Automatic Day/Night Mirror Low Reference (DF5)
E8	WHT	530	Ignition 0 Voltage
E9	ORN	4540	Battery Positive Voltage (Export)
E10	RED	842	Battery Positive Voltage
E11	ORN	4040	Battery Positive Voltage
E12	ORN	2240	Battery Positive Voltage
F1-F2	-	-	Not Used
F3	LT BLU	2114	Left Turn Signal Lamps Supply Voltage
F3	LT BLU	2114	Left Turn Signal Lamps Supply Voltage
F4	GRY/BLK	745	Left Front Door Ajar Switch Signal (w/o YE9)
F4	GRY	1690	Automatic Day/Night Mirror Signal (DF5)
F5	TAN	201	Left Front Door Speaker Output (+) (UQ3/UQ5/UQ7)
F6	BLK	1050	Ground
F7	BRN/WHT	230	Fuel Pump Enable Control (AU3 w/o YE9)
F8	PNK	1020	Off/Run/Crank Voltage - Fuse Block - Underhood
F9	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage (4.3L w/K34)
F9	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage
F10-F12	-	-	Not Used

Fuse Block - I/P C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193930 6-Way F Metri-Pack 280 Series Flexlock (BLK)
Pin	Wire Color	Circuit No.	Function
A	ORN	300	Ignition 3 Voltage
B	LT GRN	1427	Right Turn Signal Switch Signal
C	DK GRN	1428	Left Turn Signal Switch Signal
D	WHT	111	Hazard Switch Signal
E	WHT	1390	Off/Run/Crank Voltage
F	BRN	4	Accessory Voltage

Fuse Block - I/P C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12194035 12-Way F Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BRN/WHT	230	Instrument Panel Lamps Dimming Control (AU3 w/o YE9)
B	WHT	194	Door Unlock Control (AU3 w/o YE9)
C	GRY	295	Door Lock Actuator Lock Control (AU3 w/o YE9)
C	ORN	1240	Battery Positive Voltage (YE9)
D	BLK	1050	Ground (Base)
D	BLK	1050	Ground
E	-	-	Not Used
F	TAN	694	Driver Door Lock Actuator Unlock Control (AU3 w/o YE9)
F	ORN	4140	Battery Positive Voltage (Except Base)
G	TAN	201	Left Front Speaker Output (+) (UQ3)
G	TAN	201	Left Front Speaker Output (+)
H	PNK	1691	Automatic Day/Night Mirror Low Reference (DF5)
J	LT BLU	195	Door Lock Control (AU3 w/o YE9)
J	BRN	1046	DDM Class 2 Serial Data
K	GRY/BLK	745	Left Front Door Ajar Switch Signal (w/o YE9)
K	GRY	1690	Automatic Day/Night Mirror Signal (DF5)
L	GRY	118	Left Front Speaker Output (-) (UQ3)
L	GRY	118	Left Front Speaker Output (-)
M	BLK	1851	Ground (AU3 w/o YE9)
M	LT BLU	2114	Left Turn Signal Lamps Supply Voltage (YE9)

Fuse Block - I/P C4 (Crew Cab)

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-D	-	-	Not Used
E	TAN	294	Door Lock Actuator Unlock Control (Crew Cab w/YE9)
E	TAN	294	Door Lock Actuator Unlock Control (Crew Cab w/YE9)
F-J	-	-	Not Used
K	GRY	295	Left Rear Door Lock Actuator Lock Control (Crew Cab w/YE9)
K	GRY	295	Right Rear Door Lock Actuator Lock Control (Crew Cab w/YE9)
L	-	-	Not Used
M	ORN	1240	Battery Positive Voltage (Crew Cab w/YE9)