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Electrical Center Identification Views

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module (BCM) Fuses And Relays
GM1970692Courtesy of GENERAL MOTORS CORP.
BODY CONTROL MODULE (BCM) FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 FUSE PLR - Fuse Puller
2 EMPTY - Not Used
3 EMPTY - Not Used
4 EMPTY - Not Used
5 EMPTY - Not Used
6 AMP Fuse 20A Audio Amplifier (UQ3)
7 CLSTR Fuse 10A Instrument Panel Cluster (IPC)
8 IGN SW/PK3+ Fuse 2A Ignition Switch
9 STOP LP Fuse 10A Not Used
10 HVAC/PK3+ Fuse 10A HVAC Control Module, Theft Deterrent Control Module
11 EMPTY - Not Used
12 SPARE 20A Not Used
13 AIRBAG Fuse 10A Inflatable Restraint Front Passenger Presence System (PPS) Module, Inflatable Restraint Sensing and Diagnostic Module (SDM)
14 SPARE 10A Not Used
15 WPR Fuse 10A Windshield Wiper/Washer Switch, Turbocharger Boost Gauge (LNF)
16 HVAC/IP IGN Fuse 10A Clutch Pedal Start Switch (M/T), Instrument Panel Cluster (IPC), Heated Seat Switches (KA1), HVAC Control Module, Inflatable Restraint Passenger Air Bag On/Off Indicator
17 WNDW RAP Fuse 2A Not Used
18 EMPTY - Not Used
19 EPS/STR WHL CNTRL Fuse 2A Electronic Power Steering Control Module (PSCM), Steering Wheel Controls - Left (K34, UK3)
20 S ROOF Fuse 15A Sunroof Switch
21 SPARE 20A Not Used
22 EMPTY - Not Used
23 RDO Fuse 15A Radio, Remote Control Door Lock Receiver (RCDLR) (AU0)
24 XM/ONSTAR Fuse 10A Vehicle Communication Interface Module (VCIM) (UE1), Digital Radio Receiver (DRR)
25 ECM/TCM Fuse 10A Engine Control Module (ECM), Transmission Control Module (TCM)
26 DR LCK Fuse 15A DOOR LOCK PCB Relay, DOOR UNLOCK PCB Relay, DR DOOR UNLOCK PCB Relay, INT LIGHT PCB Relay
27 INT LIGHT Fuse 10A INT LIGHT PCB Relay
28 SWC BKLT Fuse 2A Steering Wheel Controls
29 PWR WNDW Fuse 30A Driver Window Switch, Front Passenger Window Switch
30 HVAC Relay - Blower Motor
31 EMPTY - Not Used
32 RAP Relay - PWR WNDW Fuse 29, S ROOF Fuse 20
Printed Circuit Board (PCB) Relays - Not Serviceable
- INT LIGHT PCB Relay - Dome Lamp, Inside Rearview Mirror
- DOOR LOCK PCB Relay - BCM Logic, Door Latches
- DOOR UNLOCK PCB Relay - BCM Logic, Door Latches
- DR DOOR UNLOCK PCB Relay - BCM Logic, Driver Door Latch
- IGN 3 PCB Relay - Blower Motor
Fig 2: Body Control Module (BCM) - Top View
GM2196381Courtesy of GENERAL MOTORS CORP.
Fig 3: Body Control Module (BCM) - Bottom View
GM2193478Courtesy of GENERAL MOTORS CORP.
Fig 4: Body Control Module (BCM) X1
GM1376257Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X1

Pin Wire Circuit Function
1 0.35 L-BU/BK 747 Left Rear Door Ajar Switch Signal (Sedan)
2 - - Not Used
3 0.35 PU 5531 Hood Closed Switch Signal (AP8)
4 0.35 PK/BK 109 Hood Ajar Switch Signal (AP8)
5 - - Not Used
6 0.35 WH 682 Door Lock Lock/Unlock Signal
7 0.35 WH 682 Door Lock Lock/Unlock Signal
8 0.35 WH 1080 Park Lamp Relay Control
9-12 - - Not Used
13 0.35 PK 849 Brake Fluid Level Sensor Signal
14 0.35 L-BU 1134 Park Brake Switch Signal
15 0.35 YE 5199 Run/Crank Relay Coil Control
16 0.35 WH 193 Rear Defog Relay Control
17 0.5 D-BU 15 Right Front Turn Signal Lamp Supply Voltage
18 0.35 D-GN 5060 Low Speed GMLAN Serial Data
19 0.35 TN/WH 746 Right Front Door Ajar Switch Signal
20 0.35 L-GN/BK 748 Right Rear Door Ajar Switch Signal (Sedan)
21 - - Not Used
22 0.35 GY/BK 745 Left Front Door Ajar Switch Signal
23-25 - - Not Used
26 0.35 L-GN 1478 Coolant Level Switch Signal (LNF)
27-30 - - Not Used
31 0.35 WH 5065 CHMSL Relay Coil Supply Voltage
32 - - Not Used
33 0.35 D-GN/WH 1135 A/T Shift Lock Control Solenoid Supply Voltage (MN5 or MX0)
34 - - Not Used
35 0.35 L-BU 14 Left Front Turn Signal Lamp Supply Voltage
36 0.35 D-GN 5060 Low Speed GMLAN Serial Data (UE1)
37-39 - - Not Used
40 0.35 L-BU 1788 Traction Control Switch Signal (JL4 or JL9)
41-43 - - Not Used
44 0.35 TN/WH 1969 Headlamp High Beam Relay Control
45-46 - - Not Used
47 0.5 YE 196 Windshield Wiper Motor Park Switch Signal
48-50 - - Not Used
51 0.35 D-GN 113 Windshield Wiper Switch Signal
52-53 - - Not Used
54 0.35 YE 317 Fog Lamp Relay Control (T37)
55 0.35 OG/BK 744 Rear Compartment Lid Ajar Switch Signal
56 - - Not Used
57 0.35 BN 253 Trunk Release Relay Control
58-59 - - Not Used
60 0.35 TN 28 Horn Relay Control
61 0.5 BK 1250 Ground
62 0.35 RD/WH 1240 Battery Positive Voltage (without LNF)
63 0.35 GY 596 5-Volt Reference - 1 (without LNF)
64 0.5 BK 650 Ground (without LNF)
65-66 - - Not Used
67 0.35 YE/BK 61 Low Reference
68 0.35 WH 5075 Current Sensor Signal (without LNF)
69 - - Not Used
70 0.35 D-GN/WH 636 Ambient Air Temperature Sensor Signal
71 0.35 L-GN/BK 592 DRL Relay Control
72 - - Not Used
Connector Part Information 
  • OEM: 15393122
  • Service: 88987847
  • Description: 72-Way F Micro 64 (GY with BU cover)
Terminal Part Information 
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
Fig 5: Body Control Module (BCM) X2
GM1376254Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X2

Pin Wire Circuit Function
1 0.5 BN/WH 2500 High Speed GMLAN Serial Data (+)
2 0.35 TN/BK 2500 High Speed GMLAN Serial Data (+)
3 0.35 YE 10 Headlamp Switch Signal
4 0.35 PU 524 Headlamp Dimmer Switch High Beam Signal
5 0.35 BN/WH 301 Park Lamp Switch On Signal
6-8 - - Not Used
9 0.35 WH 111 Hazard Switch Signal
10 0.35 TN 1576 Rear Compartment Lid Release Switch
11 0.35 D-GN 264 Security Indicator Supply Voltage
12-13 - - Not Used
14 0.35 TN 28 Horn Relay Control
15 0.35 WH 103 Headlamp Switch Headlamps On Signal
16 0.35 OG 192 Front Fog Lamp Switch Signal (T37)
17 0.35 PU/WH 549 Headlamp Switch Headlamps Off Signal
18 0.35 WH 5359 5-Volt Reference
19 0.5 BN 2501 High Speed GMLAN Serial Data (-)
20 0.35 TN 2501 High Speed GMLAN Serial Data (-)
21-25 - - Not Used
26 0.35 D-GN 44 Instrument Panel Lamp Dimmer Switch Signal
27-30 - - Not Used
31 0.35 YE 5361 Brake Pedal Position Sensor Signal
32-37 - - Not Used
38 0.35 D-GN 5060 Low Speed GMLAN Serial Data
39-43 - - Not Used
44 0.35 L-GN/BK 1137 DRL Ambient Light Sensor Signal
45-46 - - Not Used
47 0.35 YE/BK 1138 DRL Ambient Light Sensor Low Reference
48-50 - - Not Used
51 0.35 BN 1356 Flash To Pass Switch Signal
52-55 - - Not Used
56 0.35 WH 1390 Off/Run/Crank Voltage
57 0.35 GY 112 Windshield Wiper Switch Signal
58 0.35 PU 719 Low Reference
59 0.35 BN 5360 Low Reference
60 - - Not Used
61 0.35 GY 1884 Cruise Control Switch Signal (K34)
62 0.35 WH/BK 1073 Ignition Key Resistor Signal
63-65 - - Not Used
66 0.35 YE/BK 1418 Left Rear Turn Signal Switch Signal
67 0.35 D-GN/WH 1419 Right Rear Turn Signal Switch Signal
68 0.35 L-BU 292 Rear Defog Switch Signal
69 0.35 L-GN 66 A/C Request Signal (C67)
70 - - Not Used
71 0.35 PU 5234 Passenger Seatbelt Reminder
72 0.35 WH 193 Rear Defog Relay Control
Connector Part Information 
  • OEM: 15393121
  • Service: 88987848
  • Description: 72-Way F Micro 64 (GY)
Terminal Part Information 
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
Fig 6: Body Control Module (BCM) X3
GM1814460Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X3

Pin Wire Circuit Function
A1 0.5 TN 294 Door Lock Actuator Unlock Control (AU3)
A2 0.5 TN 294 Door Lock Actuator Unlock Control (AU3) (Sedan)
0.5 TN 294 Door Lock Actuator Unlock Control (AU3) (Sedan)
A3 0.5 D-BU/WH 149 Courtesy Lamp Supply Voltage
A4 0.5 GY 295 Door Lock Actuator Lock Control (AU3) (Driver)
0.5 GY 295 Door Lock Actuator Lock Control (AU3) (Passenger)
A5 0.5 GY 295 Door Lock Actuator Lock Control (AU3) (Sedan)
0.5 GY 295 Door Lock Actuator Lock Control (AU3) (Sedan)
A6 - - Not Used
A7 0.35 BN 9 Park Lamp Supply Voltage
A8 0.35 PK 339 Run/Crank Ignition 1 Voltage (KA1)
A9 0.5 YE 18 Left Rear Stop/Turn Lamp Supply Voltage
A10 0.5 GY 157 Courtesy Lamp Control
A11 - - Not Used
A12 0.5 D-GN 19 Right Rear Stop/Turn Lamp Supply Voltage
B1 0.5 TN 694 Driver Door Lock Actuator Unlock Control
B2 - - Not Used
B3 0.35 RD/WH 1240 Battery Positive Voltage (LAP)
0.5 RD/WH 1240 Battery Positive Voltage (UE1 or U2K)
B4 - - Not Used
B5 0.35 BN 4 Accessory Voltage
0.35 BN 4 Accessory Voltage (MN5)
B6-B7 - - Not Available
B8-B11 - - Not Used
B12 0.35 GY 8 Instrument Panel Lamp Supply Voltage (LAP)
0.35 GY 8 Instrument Panel Lamp Supply Voltage (LAP)
C1-C2 - - Not Available
C3 1 D-GN 1301 Retained Accessory Power Fuse Supply Voltage
C4 - - Not Used
C5 3 D-GN 801 Retained Accessory Power Fuse Supply Voltage
C6-C7 - - Not Available
C8-C11 - - Not Used
C12 0.35 OG 228 Windshield Washer Pump Control
D1 5 RD/BK 142 Battery Positive Voltage
D2 - - Not Available
D3 - - Not Used
D4 0.5 RD/WH 840 Battery Positive Voltage
D5 3 D-GN 801 Retained Accessory Power Fuse Supply Voltage
D6 3 PK 739 Run/Crank Ignition 1 Voltage
D7 0.35 PK 1339 Ignition Voltage
0.35 PK 1339 Ignition Voltage
D8-D9 - - Not Used
D10 3 RD/BK 442 Battery Positive Voltage
D11 - - Not Used
D12 3 RD/WH 242 Battery Positive Voltage
Connector Part Information 
  • OEM: 15492675
  • Service: 15404825
  • Description: 41-Way F Metri-Pack 280, 800 Series (RD)
Terminal Part Information 
  • Pins: A7, A8, B5, B12, C12, D7
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A1-A5, A9, A10, B1, B3, D4
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pin: C3
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: C5, D1, D5, D6, D10, D12
  • Terminal/Tray: 12191475/1
  • Core/Insulation Crimp: A/G
  • Release Tool/Test Probe: 12094429/J-35616-4A (PU)
Fig 7: Body Control Module (BCM) X4
GM697044Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X4

Pin Wire Circuit Function
A1 2 RD/WH 640 Battery Positive Voltage (UQ3)
A2-A12 - - Not Used
B1 0.35 OG 228 Windshield Washer Pump Control
B2 0.35 GY 8 Instrument Panel Lamp Supply Voltage
B3-B12 - - Not Used
C1 0.5 RD/WH 1440 Battery Positive Voltage
C2 0.35 GY 8 Instrument Panel Lamp Supply Voltage
0.35 GY 8 Instrument Panel Lamp Supply Voltage
C3-C5 - - Not Used
C6-C7 - - Not Available
C8 0.35 BN 4 Accessory Voltage
C9-C10 - - Not Used
C11 0.35 GY 8 Instrument Panel Lamp Supply Voltage
C12 0.35 GY 8 Instrument Panel Lamp Supply Voltage
D1 0.35 RD/WH 1040 Battery Positive Voltage
D2 - - Not Used
D3 0.35 YE 5199 Run/Crank Voltage
D4 3 BN 141 Ignition 3 Voltage
D5 - - Not Used
D6-D7 - - Not Available
D8-D9 - - Not Used
D10 1 RD/WH 1140 Battery Positive Voltage
0.5 RD/WH 1140 Battery Positive Voltage
D11-D12 - - Not Used
E1-E5 - - Not Used
E6 0.35 PK 439 Ignition Voltage
0.35 PK 439 Ignition 1 Voltage (LNF)
E7-E11 - - Not Used
E12 2 BK 550 Ground
F1 0.35 RD/WH 1540 Battery Positive Voltage
0.35 RD/WH 1540 Battery Positive Voltage
F2 0.35 GY 8 Instrument Panel Lamp Supply Voltage (LNF)
F3 0.35 GY 8 Instrument Panel Lamp Supply Voltage (KA1)
0.35 GY 8 Instrument Panel Lamp Supply Voltage (KA1)
F4 0.35 PK 339 Ignition 1 Voltage
F5 0.5 PK 339 Ignition Voltage
F6 0.5 PK 339 Ignition Voltage
F7-F8 - - Not Used
F9 0.5 PK 1539 Ignition Voltage
0.35 PK 1539 Ignition 1 Voltage (K34)
F10-F12 - - Not Used
Connector Part Information 
  • OEM: 15492668
  • Service: 88988776
  • Description: 68-Way F Metri-Pack 280 Series (L-GY)
Terminal Part Information 
  • Pins: B1, B2, C8, C11, C12, D1, D3, E6, F2, F4
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: C1, C2, F1, F3, F5, F6, F9
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pin: D10
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A1, D4, E12
  • Terminal/Tray: 12191475/1
  • Core/Insulation Crimp: A/G
  • Release Tool/Test Probe: 12094429/J-35616-4A (PU)
Fig 8: Fuse Block - Underhood Label
GM1970842Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND

Fuse And Relay Description Rating Circuits
ABS Fuse 40A Electronic Brake Control Module (EBCM)
ABS2 Fuse 10A Electronic Brake Control Module (EBCM)
ABS3 Fuse 20A Electronic Brake Control Module (EBCM)
A/C CLTCH Fuse 10A A/C Compressor Clutch (C60)
A/C CLTCH Relay - A/C CLTCH Fuse
AIR PUMP Fuse 40A AIR PUMP Relay (NU6)
AIR PUMP Relay - Secondary Air Injection (AIR) Pump (NU6)
AIR SOL Fuse 10A Secondary Air Injection (AIR) Solenoid (NU6)
AIR SOL/COOL FAN2 Relay - AIR SOL Fuse (L61+NU6), Cooling Fan - 2 (LNF)
BCK UP Fuse 10A Back Up Lamp Switch (M/T), Park Neutral Position (PNP) Switch (A/T)
BCM2 Fuse 40A AMP Fuse 6, CLSTR Fuse 7, HVAC/PK3+ Fuse 10, IGN SW/PK3+ Fuse 8, STOP LP Fuse 9 (BCM Fuses)
BCM3 Fuse 30A HVAC Relay 30 (BCM)
CHMSL Fuse 10A CHMSL Relay
CHMSL Relay - Engine Control Module (ECM), Transmission Control Module (TCM), Center High Mounted Stop Lamp (CHMSL)
CNSTR VENT Fuse 10A Evaporative Emission (EVAP) Canister Vent Solenoid
COOL FAN 1 Fuse 30A COOL FAN1 Relay
COOL FAN 2 Fuse 30A COOL FAN2 Relay
COOL FAN 1 Relay - Cooling Fan Diode (L61), Cooling Fan Motor (L61), Cooling Fan 1 (LNF), Cooling Fan Resistor (LE5)
COOL FAN 2 (Turbo) COOL FANS Relay - Cooling Fan
CRNK Fuse 30A CRNK Relay
CRNK Starter Relay - Starter
DLC Fuse 15A Data Link Connector (DLC)
DRL Fuse 10A RT and LT LO BEAM Fuses
ECM/TRANS Fuse 15A Engine Control Module (ECM), Transmission Control Module (TCM) (MN5)
ENG VLV SOL Fuse (LNF) 10A Turbocharger Wastegate Solenoid, Turbocharger Bypass Valve Solenoid, Camshaft Position (CMP) Actuator Solenoid - Intake, Camshaft Position (CMP) Actuator Solenoid - Exhaust
EXH Fuse 10A Evaporative Emission (EVAP) Canister Purge Solenoid, HO2S Sensors, Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
EPS Fuse 60A Electronic Power Steering (EPS) Control Module (PSCM)
FOG LAMP Fuse 15A Left Front and Right Front Fog Lamps (T37)
FUEL PUMP Fuse 15A Fuel Pump and Sender Assembly
FUEL PUMP Relay - FUEL PUMP Fuse
HORN Fuse 10A Horn
INJ Fuse 15A Fuel Injectors, Ignition Coil/Modules
IP IGN Fuse 20A Body Control Module (BCM)
LT HI BEAM Fuse 10A Left Headlamp
LT LO BEAM Fuse 10A Left Headlamp
MIR/UGDO Fuse 5A Outside Rearview Mirror Switch (DG7)
OUTLET Fuse 20A Cigar Lighter (DT4), Auxiliary Power Outlet
PCM/ECM Fuse 20A Engine Control Module (ECM)
PRK LAMP Fuse 10A Body Control Module (BCM), License Lamps, Marker Lamps,
Park/Turn/DRL Signal Lamps, Tail/Stop and Turn Signal Lamps
PWR/TRN Powertrain Relay - EXH Fuse, INJ Fuse, PCM/ECM Fuse, ENG VLV SOL Fuse
REAR DEFOG Fuse 40A REAR DEFOG Relay
REAR DEFOG Relay - Rear Window Defogger Grid
RT LO BEAM Fuse 10A Right Headlamp
RT HI BEAM Fuse 10A Right Headlamp
RUN/CRNK Relay - ECM/TRANS Fuse, IP IGN Fuse, BCK UP Fuse, ABS2 Fuse
SDM Fuse 10A Inflatable Restraint Sensing and Diagnostic Module (SDM), Body Control Module (BCM)
TRUNK/HEATED SEATS Fuse 20A TRUNK PCB Relay, Driver and Passenger Heated Seat Modules
WPR Fuse 25A WPR ON/OFF Relay
WPR ON/OFF Wiper Relay - WPR HI/LO Relay
WPR HI/LO Wiper Relay - Windshield Wiper Motor
Printed Circuit Board (PCB) Relays - Not Serviceable
DRL PCB Relay - DRL Fuse
FOG LAMP PCB Relay - FOG LAMP Fuse
HI BEAM PCB Relay - LT HI BEAM Fuse, RT HI BEAM Fuse
HORN PCB Relay - HORN Fuse
LO BEAM PCB Relay - LT LO BEAM Fuse, RT LO BEAM Fuse
PRK LAMP PCB Relay - PRK LAMP Fuse
TRUNK PCB Relay - Rear Compartment Lid Release Actuator
Fig 9: Fuse Block - Underhood Top View
GM1971011Courtesy of GENERAL MOTORS CORP.
Fig 10: Fuse Block - Underhood Bottom View
GM2193449Courtesy of GENERAL MOTORS CORP.
Fig 11: Fuse Block - Underhood X1
GM647951Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X1

Pin Wire Circuit Function
A1 - - Not Used
A2 0.5 RD/WH 840 Battery Positive Voltage (MN5 or MX0)
A3-A4 - - Not Used
A5 0.5 D-GN 59 A/C Compressor Clutch Supply Voltage (C67)
A6 3 WH 504 Cooling Fan Low Reference (LNF)
A7 - - Not Used
A8 0.5 PK/BK 5291 Ignition Voltage
0.5 PK/BK 5291 Ignition Voltage
A9-A10 - - Not Used
A11 3 GY 532 Cooling Fan Motor Supply Voltage
A12 - - Not Used
B1-B4 - - Not Used
B5 0.35 L-BU 20 Stop Lamp Supply Voltage (MN5 or MX0)
B6-B8 - - Not Used
B9 0.35 PK/BK 5291 Ignition Voltage
0.5 PK/BK 5291 Ignition Voltage (LNF)
0.5 PK/WH 5291 Ignition Voltage (LAP)
B10 2 PU 6 Starter Solenoid Crank Voltage
B11 0.35 PU 421 Air Injection Reaction Solenoid Coil (NU6)
B12 0.5 BK/WH 451 Ground
C1 - - Not Used
C2 0.35 BN 436 AIR Pump Relay Control (NU6)
C3-C8 - - Not Used
C9 0.8 PK/BK 5293 Ignition 1 Voltage (LNF)
C10-C12 - - Not Used
D1-D5 - - Not Used
D6-D7 - - Not Available
D8 - - Not Used
D9 0.5 PK/BK 5292 Ignition Voltage
0.8 PK/WH 5292 Ignition Voltage (LAP)
D10-D12 - - Not Used
E1-E4 - - Not Used
E5 0.5 PK 1039 Ignition Voltage (LAP with MN5 or MX0)
0.5 PK 1039 Ignition Voltage (LAP with MN5 or MX0)
E7 - - Not Used
E8 0.5 PK/BK 415 AIR Solenoid Supply Voltage (NU6)
E9 - - Not Used
E10 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
E11-E12 - - Not Used
F1-F2 - - Not Used
F3 0.5 BK 150 Ground (C67)
F4 - - Not Used
F5 0.5 PK/BK 539 Ignition Voltage
F6-F8 - - Not Used
F9 1 BK 1050 Ground (NU6)
F10 3 L-BU 409 Cooling Fan Motor Supply Voltage
F11-F12 - - Not Used
Connector Part Information 
  • OEM: 15319896
  • Service: 15319896
  • Description: 68-Way F Metri-Pack 280 Series (BK)
Terminal Part Information 
  • Pins: A2, A5, A8, B12, C9, D9, E5, E8, F3, F5, F9, F10 (LNF)
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A6, A11, F10
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: A6, A11
  • Terminal/Tray: 12191475/1
  • Core/Insulation Crimp: A/G
  • Release Tool/Test Probe: 12094429/J-35616-4A (PU)
  • Pins: B5, B9, B11, C2, E10
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B10
  • Terminal/Tray: 12110842/4
  • Core/Insulation Crimp: A/B
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: F10
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
Fig 12: Fuse Block - Underhood X2
GM1376704Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X2

Pin Wire Circuit Function
A1 0.35 L-GN 1715 Windshield Wiper Switch High Signal
A2 0.35 TN/WH 1969 Headlamp High Beam Relay Control
A3-A5 - - Not Used
A6 1 BK 150 Ground
A7 0.35 D-GN 113 Windshield Wiper Switch Signal 2
A8-A12 - - Not Used
B1 1 PU 92 Windshield Wiper Motor High Speed
B2 1 D-GN 95 Windshield Washer Switch Signal
B3-B5 - - Not Used
B6 0.35 TN 28 Horn Relay Control
B7 0.35 WH 1080 Park Lamp Relay Control
B8-B9 - - Not Used
B10 0.35 BN 253 Trunk Release Relay Control
B11-B12 - - Not Used
C1 0.35 PU/WH 6386 CRNK Relay Control
C2 0.35 PK/WH 1970 Headlamp Low Beam Relay Control
C3 0.35 YE 317 Fog Lamp Relay Control (T37)
C4-C5 - - Not Used
C6-C7 - - Not Available
C8-C10 - - Not Used
C11 1 RD/WH 340 Battery Positive Voltage (KA1)
1 RD/WH 340 Battery Positive Voltage (KA1)
C12 - - Not Used
D1-D3 - - Not Used
D4 1 GY 120 Fuel Pump Supply Voltage
D5 - - Not Used
D6-D7 - - Not Available
D8 0.8 TN/WH 56 Rear Compartment Lid Release Switch
D9-D12 - - Not Used
E1 3 BK 293 Rear Defog Element Supply Voltage
E2-E4 - - Not Used
E5 0.35 L-GN/BK 592 Daytime Running Lamp Relay Output - Coil
E6-E8 - - Not Used
E9 0.35 WH 5065 CHMSL Relay Coil Supply Voltage
E10-E12 - - Not Used
F1 0.35 WH 193 Rear Defog Relay Control
F2-F4 - - Not Used
F5 0.8 L-BU 20 Stop Lamp Supply Voltage
0.35 L-BU 20 Stop Lamp Supply Voltage
F6 0.35 D-GN/WH 465 Fuel Pump Relay Control
F7-F12 - - Not Used
Connector Part Information 
  • OEM: 15405474
  • Service: 88956512
  • Description: 68-Way F Metri-Pack 280 Series FLXLK (L-GY)
Terminal Part Information 
  • Pins: E1
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: A1, A2, A7, B6, B7, B10, C1-C3, D1, F1, F6, A6, B1, B2, C11, D4, D8
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: Pins A1, A2, A7, B6, B7, B10, C1, C1-C3, D1, F1, F6: E/C
  • Core/Insulation Crimp: Pins A6, B1, B2, C11, D4, D8 : C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 13: Fuse Block - Underhood X3
GM647944Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X3

Pin Wire Circuit Function
A1 0.5 D-BU 15 Right Turn Signal Lamp Supply Voltage
A2 0.35 PU 359 Daytime Running Lamps Headlamp Feed
A3 0.5 L-GN/BK 311 Right Headlamp High Beam Supply Voltage
A4-A6 - - Not Used
B1 0.5 OG 228 Windshield Washer Pump Control
B2 1 BK 150 Ground (without LNF)
B3 0.5 D-GN/WH 711 Left Headlamp High Beam Supply Voltage
B4-B6 - - Not Used
C1 0.5 BN 9 Park Lamp Supply Voltage
0.5 BN 9 Park Lamp Supply Voltage
C2 - - Not Used
C3-C4 - - Not Available
C5-C6 - - Not Used
D1 0.5 L-BU 14 Left Turn Signal Lamp Supply Voltage
D2 - - Not Used
D3-D4 - - Not Available
D5 0.5 PU 2234 Front Fog Lamp Supply Voltage (T37)
0.5 PU 2234 Front Fog Lamp Supply Voltage (T37)
D6 - - Not Used
E1-E2 - - Not Used
E3 0.5 D-GN 29 Horn Control
E4 0.5 TN/WH 312 Right Headlamp Low Beam Supply Voltage
E5-E6 - - Not Used
F1 - - Not Used
F2 3 BK 150 Ground (LNF)
F3 - - Not Used
F4 0.5 YE 712 Left Headlamp Low Beam Supply Voltage
0.35 PU 359 Daytime Running Lamps Headlamp Feed
F5-F6 - - Not Used
Connector Part Information 
  • OEM: 15319892
  • Service: 15319892
  • Description: 32-Way F Metri-Pack 280 Series (WH)
Terminal Part Information 
  • Pins: F2
  • Terminal/Tray: 12110842/4
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A1, D1, A3, B1, B3, C1, D5, E3, E4, F4
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: Pins A1, D1: E/C
  • Core/Insulation Crimp: Pins A3, B1, B3, C1, C1, D5, D5, E3, E4, F4: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 14: Fuse Block - Underhood X4
GM1243665Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X4

Pin Wire Circuit Function
A1-A2 - - Not Used
B1 3 RD/BK 542 Battery Positive Voltage
B2 - - Not Used
C1 3 RD/WH 242 Battery Positive Voltage
C2 3 RD/BK 442 Battery Positive Voltage
D1-D2 - - Not Used
Connector Part Information 
  • OEM: 15447740
  • Service: 88987883
  • Description: 8-Way F Metri-Pack 800 Series (L-GY)
Terminal Part Information 
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 15: Fuse Block - Underhood X5
GM647947Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X5

Pin Wire Circuit Function
A1 0.35 D-BU 473 High Speed Cooling Fan Relay Control
A2 3 PK 739 Ignition 1 Voltage
A3 - - Not Used
A4 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control (C67)
A5 0.5 RD/WH 1840 Battery Positive Voltage
A6 - - Not Used
B1 0.8 PK/BK 5290 Ignition Voltage
B2 0.35 PK 1439 Ignition 1 Voltage (without JL4)
0.5 PK 1439 Ignition 1 Voltage (JL4)
B3 0.5 PK 1039 Ignition Voltage
B4 0.35 YE 5199 Run/Crank Relay Coil Control
B5 0.5 RD/WH 240 Battery Positive Voltage
B6 - - Not Used
C1 - - Not Used
C2 0.5 BK 1250 Ground
C3-C4 - - Not Available
C5 0.35 RD/WH 440 Battery Positive Voltage (DG7)
C6 - - Not Used
D1 0.5 BN 9 Park Lamp Supply Voltage
D2 - - Not Used
D3-D4 - - Not Available
D5 0.8 RD/WH 40 Battery Positive Voltage
D6 - - Not Used
E1 0.35 OG 228 Windshield Washer Pump Control
E2 0.35 YE 5991 Engine Main Relay Control
E3 0.5 RD/WH 840 Battery Positive Voltage
E4 0.5 RD/WH 840 Battery Positive Voltage
E5 2 RD/WH 740 Battery Positive Voltage
E6 - - Not Used
F1 0.5 D-BU 15 Right Turn Signal Lamp Supply Voltage
F2 0.5 L-BU 14 Left Turn Signal Lamp Supply Voltage
F3-F4 - - Not Used
F5 0.35 RD/WH 1340 Battery Positive Voltage
F6 - - Not Used
Connector Part Information 
  • OEM: 15319893
  • Service: 15319893
  • Description: 32-Way F Metri-Pack 280 Series (GY)
Terminal Part Information 
  • Pins: A1, A4, B4, C2, C5, E1, E2, A5, B1, B3, C1, D1, D5, E3, E4, F1-F5
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: Pins A1, A4, B4, C2, C5, E1, E2: E/C
  • Core/Insulation Crimp: Pins A5, B1, B3, C1, D1, D5, E3, E4, F1, F2- F5: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A2, B2, B5
  • Terminal/Tray: 12110842/4
  • Core/Insulation Crimp: Pins A2: F/G
  • Core/Insulation Crimp: Pins B2, B5: C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 16: Fuse Block - Underhood X6 Connector End View
GM888055Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X6

Pin Wire Circuit Function
A 5 RD/BK 642 Battery Positive Voltage
Connector Part Information 
  • OEM: 15303503
  • Service: 88988312
  • Description: 1-Way F Metri-Pack 800 Series (L-GY)
Terminal Part Information 
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 17: Fuse Block - Underhood X7 (L61 with NU6) Connector End View
GM888055Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X7 (L61 with NU6)

Pin Wire Circuit Function
A 5 OG 78 AIR Pump Supply Voltage
Connector Part Information 
  • OEM: 15303504
  • Service: 88988819
  • Description: 1-Way F Metri-Pack 800 Series (L-GN)
Terminal Part Information 
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
NOTE: Connector end view for Fuse Block - Underhood X8 (To Starter/Generator) not available from manufacturer.
Fuse Block - Underhood X8 (To Starter/Generator)

Terminal Part Information 
  • Harness: Engine Harness
  • Terminal: 7003611702
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Underhood X8 (To Starter/Generator)

Pin Wire Circuit Function
+ 50 RD 1 Battery Positive Voltage
NOTE: Connector end view for Fuse Block - Underhood X8 (To Battery) not available from manufacturer.
Fuse Block - Underhood X8 (To Battery)

Terminal Part Information 
  • Harness: Battery Cable
  • Terminal: 7003-6115-02
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Underhood X8 (To Battery)

Pin Wire Circuit Function
+ 40 RD 1 Battery Positive Voltage
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