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Home >> GMC >> 2011 >> Terrain SLT, 2.4 C, FWD >> Repair and Diagnosis >> Electrical >> Component Locations >> Component Locations - Electrical Center Identification Views >> Electrical Center Identification Views

Electrical Center Identification Views

Fig 1: X50A Fuse Block - Underhood Label
G00672268Courtesy of GENERAL MOTORS COMPANY
X50A FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND

No. Device Label Name Fuse And Relay Description Rating Circuits
1 COOL FAN I Fuse F1UA Fuse 30A KR20C Cooling Fan Low Speed Relay (LEA)
25A KR20C Cooling Fan Low Speed Relay (LFW)
2 COOL FAN II Fuse F2UA Fuse 40A KR20D Cooling Fan High Speed Relay (LEA)
25A KR20D Cooling Fan High Speed Relay (LFW)
3 BRK/BSTR Fuse F3UA Fuse 25A KR14 Brake Booster Pump Motor Relay
4 WNDW RT Fuse F4UA Fuse 30A S79P Window Switch - Passenger, S79RR Window Switch - Right Rear
5 MSM Fuse F5UA Fuse 40A K40 Seat Memory Control Module (LTZ or SLT)
6 PWR SEAT LT Fuse F6UA Fuse 30A S64D Seat Adjuster Switch - Driver
7 I/P BEC #1 Fuse F7UA Fuse 60A F4DA, F8DA, F10DA, F12DA, F16DA, F30DA, F34DA, and F40DA Fuses
8 REAR DEFOG Fuse F8UA Fuse 30A E18 Rear Defogger Grid
9 STRTR Fuse F9UA Fuse 30A M64 Starter Motor
10 AIR PUMP Fuse F10UA Fuse 40A KR25 Secondary Air Injection Pump
Relay (NU6), G21 Secondary Air Injection Pump (NU6)
11 I/P BEC #2 Fuse F11UA Fuse 60A F6DA, F20DA, F29DA, F31DA, F32DA, F33DA, F35DA, F36DA, F37DA, and F38DA Fuses
12 S/ROOF Fuse F12UA Fuse 30A M69 Sunroof Motor (CF5)
13 ABS PUMP Fuse F13UA Fuse 40A K17 Electronic Brake Control Module
14 I/P BEC #3 Fuse F14UA Fuse 60A KR80 Accessory Relay, KR104A Battery Saver Relay 1 (EXP)
KR80 Accessory Relay, F5DA, F7DA, F9DA, F11DA, F15DA, and F19DA Fuses (without EXP)
15 WNDW LT Fuse F15UA Fuse 30A S79D Window Switch - Driver, S79LR Window Switch - Left Rear
16 ABS MDL Fuse F16UA Fuse 20A K17 Electronic Brake Control Module
17 TCM BATT Fuse F17UA Fuse 15A T12 Automatic Transmission Assembly
18 PRK/LGHT Fuse F18UA Fuse 15A X88 Trailer Connector (V92)
19 Not Used Not Used N/A Not Used
20 ECM BATT Fuse F20UA Fuse 10A K20 Engine Control Module
21 CNSTR VENT Fuse F21UA Fuse 10A Q13 Evaporative Emission Vent Solenoid Valve
22 TRLR LT Fuse F22UA Fuse 10A X88 Trailer Connector (V92)
23 LGM Fuse F23UA Fuse 30A K39 Liftgate Control Module (TB5)
24 PWR LUM Fuse F24UA Fuse 20A S65D Seat Lumbar Support Switch - Driver
25 TRLR RT Fuse F25UA Fuse 10A X88 Trailer Connector (V92)
26 REAR ACCY PWR OUTLET Fuse F26UA Fuse 20A X80R Accessory Power Receptacle - Rear Compartment
27 MIR MM Fuse F27UA Fuse 7.5A K96L Mirror Control Module - Left (LTZ or SLT), S52 Outside Rearview Mirror Switch (without LTZ or SLT)
28 RVC BATT SNSR F28UA Fuse 5A K9 Body Control Module
29 WPR Fuse F29UA Fuse 25A KR12C Windshield Wiper Speed Control Relay, KR12B Windshield Wiper Relay
30 REAR/WPR Fuse F30UA Fuse 20A KR7 Rear Wiper Relay
31 A/C CMPRSR Fuse F31UA Fuse 10A Q2 A/C Compressor Clutch
32 REAR CLOSURE Fuse F32UA Fuse 15A KR95A Liftgate Unlatch Relay
33 HTD MIR Fuse F33UA Fuse 10A A9A Outside Rearview Mirror - Driver (DL8 or DL9), A9B Outside Rearview Mirror - Passenger (DL8 or DL9)
34 HORN Fuse F34UA Fuse 15A P12A Horn - High Note, P12B Horn - Low Note
35 RT HI BEAM Fuse F35UA Fuse 10A E4F Headlamp - Right High Beam
36 LT HI BEAM Fuse F36UA Fuse 10A E4E Headlamp - Left High Beam
37 EVEN INJ Fuse F37UA Fuse 20A K20 Engine Control Module (LFW), T8B Ignition Coil 2, T8D Ignition Coil 4, T8F Ignition Coil 6 (LFW)
38 ODD INJ Fuse F38UA Fuse 20A K20 Engine Control Module, T8A Ignition Coil 1, T8C Ignition Coil 3, T8E Ignition Coil 5 (LFW)
39 WSW Fuse F39UA Fuse 20A KR6Rear Window Washer Pump Relay, KR11 Windshield Washer Pump Relay
40 FRT FOG LAMP Fuse F40UA Fuse 15A E29LF Fog Lamp - Left Front (T96), E29RF Fog Lamp - Right Front (T96)
41 O2 SNSR POST Fuse F41UA Fuse 15A B52D Heated Oxygen Sensor Bank 1 Sensor 2 (LFW), B52F Heated Oxygen Sensor Bank 2 Sensor 2 (LFW)
42 ECM Fuse F42UA Fuse 20A K20 Engine Control Module
43 O2 SNSR PRE Fuse F43UA Fuse 15A Q12 Evaporative Emission Canister Purge Solenoid Valve, B52A Heated Oxygen Sensor 1 (LEA), B52B Heated Oxygen Sensor 2 (LEA), B52C Heated Oxygen Sensor Bank 1 Sensor 1 (LFW), B52E Heated Oxygen Sensor Bank 2 Sensor 1 (LFW), B75B Mass Air Flow/Intake Air Temperature Sensor, B198 Fuel Composition Sensor (LFW)
44 TCM Fuse F44UA Fuse 15A T12 Automatic Transmission Assembly
45 MIR Fuse F45UA Fuse 7.5A P14 Passenger Air Bag Disable Indicator, A10 Inside Rearview Mirror
46 CCM Fuse F46UA Fuse 10A K27 Fuel Pump Control Module
47 Not Used Not Used - Not Used
48 RDM Fuse F48UA Fuse 15A K47 Rear Differential Clutch Control Module
49 LGM LOGIC Fuse F49UA Fuse 15A K39 Liftgate Control Module (TB5)
50 I/P BEC Fuse F50UA Fuse 25A HVAC, MIL, and SDM MDL IGN Fuses
51 HTD/SEAT FRT Fuse F51UA Fuse 25A K29 Seat Heating Control Module (KA1 without LTZ or SLT), K40 Seat Memory Control Module (KA1 with LTZ or SLT)
52 CCM Fuse F52UA Fuse 25A K27 Fuel Pump Control Module
53 ECM Fuse F53UA Fuse 10A K20 Engine Control Module
54 REAR CAM Fuse F54UA Fuse 5A B87 Rearview Camera (UVC)
55 EPS F55UA Fuse 80A K43 Power Steering Control Module (LEA)
56 Not Used Not Used N/A Not Used
Relays 
57 BRK/BSTR Relay KR14 Brake Booster Pump Motor Relay - G6 Brake Booster Pump - Auxiliary
58 COOL FAN LO Relay KR20C Cooling Fan Low Speed Relay - G10L Cooling Fan Motor - Left (LFW), R10 Cooling Fan Resistor (LEA)
59 HEAD LAMP HI Relay KR48 Headlamp High Beam Relay - F35UA and F36UA Fuses
60 COOL FAN CNTRL Relay KR20E Cooling Fan Speed Control Relay (LFW) - G10R Cooling Fan Motor - Right (LFW)
61 WPR ON/OFF CNTRL Relay KR12B Windshield Wiper Relay - KR12C Windshield Wiper Speed Control Relay
62 A/C CMPRSR Relay KR29 A/C Compressor Clutch Relay - F31UA Fuse
63 REAR DEFOG Relay KR5 Rear Defogger Relay - F8UA Fuse
64 WPR HI/LO SPD Relay KR12C Windshield Wiper Speed Control Relay - M75 Windshield Wiper Motor
65 FOG LAMP Relay KR46 Front Fog Lamp Relay - F40UA Fuse
66 ENG CNTRL Relay KR75 Engine Controls Ignition Relay - F38UA, F41UA, F42UA, and F43UA Fuses, KR14 Brake Booster Pump Motor Relay, KR20C Cooling Fan Low Speed Relay, KR20D Cooling Fan High Speed Relay, and KR20E Cooling Fan Speed Control Relay (LFW)
67 STRTR Relay KR27 Starter Relay - M64 Starter Motor
68 RUN/CRNK Relay KR73 Ignition Main Relay - F44UA, F45UA, F46UA, F50UA, F53UA, and F54UA Fuses
69 COOL FAN HI Relay KR20D Cooling Fan High Speed Relay - G10R Cooling Fan Motor - Right (LFW), G10 Cooling Fan Motor (LEA)
70 AIR PUMP Relay KR25 Secondary Air Injection Pump Relay - G21 Secondary Air Injection Pump
NOTE:

Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
- - KR3 Horn Relay - F34UA Fuse
- - KR6 Rear Window Washer Pump Relay - G24 Windshield Washer Pump
- - KR7 Rear Wiper Relay - M45 Rear Wiper Motor
- - KR11 Windshield Washer Pump Relay - G24 Windshield Washer Pump
- - KR53 Park Lamp Relay - F18UA Fuse
- - KR63L Trailer Stop/Turn Signal Lamp Relay - Left - F25UA Fuse
- - KR63R Trailer Stop/Turn Signal Lamp Relay - Right - F22UA Fuse
- - KR95A Liftgate Unlatch Relay - A23C Liftgate Latch Assembly (TB4)
- - KR97 Door Lock Relay - A23LR Door Latch Assembly - Left Rear, A23RR Door Latch Assembly - Right Rear
NOTE:

Items listed below are Wiper/Washer system diagnostic test points.
71 TEST POINT (228A) - - G24 Windshield Washer Pump
72 TEST POINT (392) - - G24 Windshield Washer Pump
73 TEST POINT (393) - - M45 Rear Wiper Motor
NOTE:

Items listed below are Door Latch system diagnostic test points.
74 TEST POINT (6128) - - A23C Liftgate Latch Assembly (TB4)
75 TEST POINT (295) - - A23LR Door Latch Assembly - Left Rear, A23P Door Latch Assembly - Passenger, A23RR Door Latch Assembly - Right Rear
76 TEST POINT (3271) - - KR97 Door Lock Relay
Fig 2: X50A Fuse Block - Underhood, Top View
GM2367882Courtesy of GENERAL MOTORS COMPANY
Fig 3: X50A Fuse Block - Underhood, Bottom View
GM2367883Courtesy of GENERAL MOTORS CORP.
Fig 4: X50A Fuse Block - Underhood X1 Connector End View
GM1876012Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X1

Pin Wire Circuit Function
A1 0.5 PK/BK 5294 Battery Positive Voltage (LFW)
A2 0.5 YE 5991 Powertrain Relay Control
A3 0.5 PK/BK 5293 Ignition Voltage
A4 0.5 PU/WH 6386 Starter Relay Control
A5 0.5 PK 439 Ignition Voltage
A6 0.5 PK 2139 Ignition Voltage
B1 1 PK/BK 5290 Ignition Voltage (LAF)
2 PK/BK 5290 Ignition Voltage (LFW)
B2 0.5 PK/BK 5293 Ignition Voltage
0.5 PK/BK 5293 Ignition Voltage
B3 3 PU 6 Starter Solenoid Crank Voltage
C1 - - Not Used
C2 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
C3 0.5 D-BU 473 High Speed Cooling Fan Relay Control
C4 0.5 D-GN/WH 459 A/C Compressor Clutch Relay Control
C5-C6 - - Not Used
D1 1 PK/BK 5292 Ignition Voltage (LFW)
D2 0.8 PK/BK 5291 Ignition Voltage
1 PK/BK 5291 Ignition Voltage
E1 0.8 PK/BK 5292 Ignition Voltage (LFW)
E2-E3 - - Not Used
F1-F2 - - Not Used
F3 0.5 L-BU/WH 6311 Brake Pedal Switch Signal
G1 0.5 RD/WH 440 Battery Positive Voltage
G2 1 OG 1470 Supply Voltage
H1-H2 - - Not Used
H3 0.5 D-GN 59 A/C Compressor Clutch Supply Voltage
H4 0.35 BK 250 Ground
H5 - - Not Used
H6 0.5 BN 6305 Vacuum Pump Relay Control
J1 - - Not Used
J2 0.5 RD/WH 1840 Battery Positive Voltage
J3 0.5 BN 6305 Vacuum Pump Relay Control
K1-K4 - - Not Used
K5 0.5 D-BU 5985 Serial Data Wake-Up Signal
K6 0.5 D-BU 5985 Serial Data Wake-Up Signal
Connector Part Information 
  • Harness: Engine
  • OEM Connector: 88988809
  • Service: 88988752
  • Description: 40-Way F GT 150 280 Metri-Pack 800 Series (GY)
Terminal Part Information 
  • Pins: A1-A6, C2-C4, H3, H4, H6, K5, K6
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Pins: D2, G2
  • Terminated Lead: 13575465
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12065915/5
  • Core/Insulation Crimp: Pin D2: A/D
  • Core/Insulation Crimp: Pin E3: C/A
  • Pins: B1, B3
  • Terminated Lead: 13575756
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Pins: B2, D1, E1, F3, G1, J2, J3
  • Terminated Lead: 135757553
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins G1, G2, J2, J3 - E/A
  • Core/Insulation Crimp: Pins B2, D1, E1 - 2/A
Fig 5: X50A Fuse Block - Underhood X2 Connector End View
GM1665658Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X2

Pin Wire Circuit Function
A1 - - Not Used
A2 0.5 D-BU 5985 Serial Data Wake-Up Signal
A3 - - Not Used
A4 0.35 L-BU/WH 6311 Brake Pedal Switch Signal
A5 - - Not Used
A6 0.35 OG 5186 Left Trailer Turn Signal Lamp Control (V92)
A7 0.35 YE 5187 Right Trailer Turn Signal Lamp Control (V92)
A8 0.8 L-BU 6128 Rear Closure Unlatch Motor Unlatch Control (TB4)
B1 - - Not Used
B2 0.5 RD/WH 2440 Battery Positive Voltage
B3 0.5 BN 6305 Vacuum Pump Relay Control
B4 1 WH 393 Rear Window Wiper Motor Control
B5 0.5 BK 750 Ground
C1-C4 - - Not Used
C5 0.35 YE 5420 Rear Wiper Relay Control
C6 0.35 D-GN 5706 5-Volt Reference (TB4)
C7 0.35 YE 5704 5-Volt Reference (TB4)
C8 0.5 BK 750 Ground
D1 2 RD/WH 1340 Battery Positive Voltage
D2 0.8 YE 318 Left Rear Trailer Stop/Turn Lamp Supply Voltage (V92)
D3 0.8 D-GN 319 Right Rear Trailer Stop/Turn Lamp Supply Voltage (V92)
D4 0.5 RD/WH 2340 Battery Positive Voltage
D5 1 RD/WH 3040 Battery Positive Voltage
E1 3 RD/BK 1342 Battery Positive Voltage (LTZ or SLT)
E2 5 RD/BK 42 Battery Positive Voltage
F1 3 RD/WH 5040 Battery Positive Voltage
F2 - - Not Used
G1 - - Not Used
G2 3 RD/WH 1540 Battery Positive Voltage (TB5)
G3 1 RD/WH 4940 Battery Positive Voltage
G4 2 PU 293 Rear Defog Element Supply Voltage
G5 0.35 OG 2267 Mirror Heating Element Supply Voltage (DL8)
H1-H6 - - Not Used
H7 0.35 OG 2267 Mirror Heating Element Supply Voltage (DL8)
H8 0.5 TN 860 Front Windshield Wiper Switch High Signal
J1 0.8 BN 2109 Trailer Park Lamps Supply Voltage (V92)
J2 0.8 RD/WH 5240 Battery Positive Voltage
J3 0.5 RD/WH 1940 Battery Positive Voltage
J4 - - Not Used
J5 1 BK 350 Ground
K1 0.35 D-BU 45 Park Lamp Supply Voltage/Marker Lamp Supply Voltage
K2-K4 - - Not Used
K5 0.35 L-GN/BK 3267 Child Security Door Latch Relay Control
K6 0.35 GY 91 Wiper Relay Control
K7 - - Not Used
K8 1 D-BU/WH 3266 Rear Door Latch Control
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 19115189
  • Service Connector: 19115189
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: E1, E2, F1, G2
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Pins: A2, A4, A6-A8, C5-C8, G5, H8, K1, K5, K6, K8
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins A2, A4, A6, A7, C5-C8, G5, H8, K1, K5, K6 - E/C
  • Core/Insulation Crimp: Pins A8, K8 - C/A
  • Pins: D1, G4
  • Terminated Lead: 13575754
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Pins: B2-B5, D2-D5, G3, H7, J1-J3, J5
  • Terminated Lead: Pins B4, D2, D3, D5, G3, J1, J2, J5 - 13575753
  • Terminated Lead: Pins B2, B3, B5, D4, H7, J3 - 13575752
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B2, B3, B5, D4, H7, J3 - E/A
  • Core/Insulation Crimp: Pins B4, D2, D3, D5, G3, J1, J2, J5 - 2/A
Fig 6: X50A Fuse Block - Underhood X3 Connector End View
GM2399997Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X3

Pin Wire Circuit Function
A1-A6 - - Not Used
B1 0.8 OG 228 Windshield Washer Pump Control
B2 0.8 D-GN 392 Rear Window Washer Pump Control
B3 3 BK 1150 Ground (LFW)
C1 0.8 D-GN 29 Horn Control
C2 0.8 D-GN 29 Horn Control
C3 0.8 L-GN/BK 311 Right Headlamp High Beam Supply Voltage
C4 0.5 D-GN/WH 711 Left Headlamp High Beam Supply Voltage
C5 0.5 PU 2234 Front Fog Lamp Supply Voltage (T96)
C6 - - Not Used
D1 - - Not Used
D2 2 WH 504 Cooling Fan Low Reference (LFW)
E1 3 L-BU 409 Cooling Fan Motor Supply Voltage (LAF)
2 L-BU 409 Cooling Fan Motor Supply Voltage (LFW)
E2 3 GY 532 Cooling Fan Motor Supply Voltage (LAF)
2 GY 532 Cooling Fan Motor Supply Voltage (LFW)
F1-F6 - - Not Used
G1 0.5 BK 1150 Ground
G2-G3 - - Not Used
H1-H6 - - Not Used
Connector Part Information 
  • Harness Type: Forward Lamp
  • OEM Connector: 19206622
  • Service Connector: 13574910
  • Description: 34-Way F ASM CONN 34 F GT 150 280 M/P 800 SLD (BK)
Terminal Part Information 
  • Pins: D2, E1, E2
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Pins: B3
  • Terminated Lead: 13575756
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Pins: B1, B2, G1
  • Terminated Lead: 13575753
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B1, B2 - 2/A
  • Core/Insulation Crimp: Pins G1 - E/A
  • Pins: C1-C5
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins C1-C3 - C/A
  • Core/Insulation Crimp: Pins C4, C5 - E/C
Fig 7: X50A Fuse Block - Underhood X4 Connector End View
GM2083844Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X4

Pin Wire Circuit Function
A1-A6 - - Not Used
A7 1 GY 295 Door Lock Actuator Lock Control
A8 1 D-GN 3271 Door Latch Control
B1 - - Not Used
B2 0.8 RD/BK 1042 Battery Positive Voltage
B3 1 RD/WH 2640 Battery Positive Voltage
B4 1 RD/WH 840 Battery Positive Voltage (TB5)
B5 1 D-GN 95 Windshield Wiper Motor Low Speed
C1-C7 - - Not Used
C8 0.35 WH 193 Rear Defog Relay Control
D1 - - Not Used
D2 2 RD/WH 1240 Battery Positive Voltage
D3 1 RD/WH 5140 Battery Positive Voltage (KA1)
D4 0.8 RD/BK 1542 Battery Positive Voltage (F46)
D5 1 PU 92 Windshield Wiper Motor High Speed
E1 5 RD/BK 742 Battery Positive Voltage
E2 5 RD/BK 1642 Battery Positive Voltage
F1 3 RD/BK 442 Battery Positive Voltage
F2 - - Not Used
G1 - - Not Used
G2 2 RD/WH 3540 Battery Positive Voltage (CF5)
G3 1 PK 839 Ignition Voltage
G4-G5 - - Not Used
H1-H6 - - Not Used
H7 0.35 YE 5199 Ignition Voltage
H8 0.5 PK 1739 Ignition Voltage
J1 - - Not Used
J2 0.35 PK 1339 Ignition Voltage (UVC)
J3-J5 - - Not Used
K1-K2 - - Not Used
K3 0.5 TN/WH 1969 Headlamp High Beam Relay Control
K4 0.35 OG 2268 Washer Fluid Pump Relay Control
K5 0.35 TN 28 Horn Relay Control
K6 0.35 L-GN 2270 Rear Window Washer Relay Control
K7 0.35 D-GN/WH 1317 Fog Lamp Relay Control (T96)
K8 0.35 PK 339 Ignition Voltage
X50A Fuse Block - Underhood X5

Pin Wire Circuit Function
A 19 RD 1 Battery Positive Voltage
X50A Fuse Block - Underhood X6 (LAF)

Pin Wire Circuit Function
A 13 RD/BK 42 Battery Positive Voltage
Connector Part Information 
  • Harness: Body
  • OEM: 15477823
  • Service: 13574911
  • Description: 56-Way F GT 150 280 Metri-Pack Series, (L-GY)
Terminal Part Information 
  • Pins: E1, E2, F1
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Pins: A7, A8, C8, H7, H8, K3-K8
  • Terminated Lead: 13575735
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: Pins C8, H7, H8, K3-K8 - E/C
  • Core/Insulation Crimp: Pins A7, A8 - C/A
  • Pins: B2-B5, D3-D5, G3, J2
  • Terminated Lead: 13575753
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pin J2 - E/A
  • Core/Insulation Crimp: Pins B2-B5, D3-D5, G3 - 2/A
  • Pins: D2, G2
  • Terminated Lead: 13575754
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
Terminal Part Information 
  • Harness: Positive Battery Cable
  • Terminal: 13717084
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Terminal Part Information 
  • Harness: Electric Power Steering
  • Terminal: X30709AC33X8
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fig 8: X51A Fuse Block - Instrument Panel Label
GM2385148Courtesy of GENERAL MOTORS CORP.
X51A FUSE BLOCK - INSTRUMENT PANEL FUSE AND RELAY IDENTIFICATION LEGEND

No. Device Label Name Fuse And Relay Description Rating Circuits
1 STR WHL DM Fuse F1DA Fuse 2A Steering Wheel Control Switch - Left, Steering Wheel Control Switch - Right
2 Not Used Not Used N/A Not Used
3 Not Used Not Used N/A Not Used
4 BCM 1 Fuse F4DA Fuse 15A Body Control Module
5 INFOTMNT Fuse F5DA Fuse 10A P22E Video Display - Driver Seatback (UWG), P22F Video Display - Passenger Seatback (UWG)
6 BCM 7 Fuse F6DA Fuse 15A Body Control Module
7 NCM Fuse F7DA Fuse 5A K108 Active Noise Cancellation Module (VQN)
8 BCM 4 Fuse F8DA Fuse 15A K9 Body Control Module
9 RDO Fuse F9DA Fuse 20A A11 Radio
10 SEO BATT Fuse F10DA Fuse 20A Not Used
11 URPA MDL Fuse F11DA Fuse 10A K41R Object Alarm Control Module (UD7)
12 HVAC BATT Fuse F12DA Fuse 20A K33 HVAC Control Module
13 AUX PWR FRT Fuse F13DA Fuse 20A X80G Accessory Power Receptacle - Instrument Panel
14 HVAC IGN Fuse F14DA Fuse 5A HVAC Control Module
15 DSPLY Fuse F15DA Fuse 10A Info Display Module, Radio/HVAC Control
16 BCM 5 Fuse F16DA Fuse 15A Body Control Module
17 AUX PWR REAR Fuse F17DA Fuse 20A Accessory Power Receptacle - Center Console 1, Accessory Power Receptacle - Center Console 2
18 IPC IGN Fuse F18DA Fuse 5A Instrument Cluster
19 PDI MDL Fuse F19DA Fuse 10A Multimedia Player Interface Module (KTA)
20 BCM 6 Fuse F20DA Fuse 15A Body Control Module
21 SEO RAP Fuse F21DA Fuse 20A Not Used
22 SDM IGN Fuse F22DA Fuse 10A Inflatable Restraint Sensing and Diagnostic Module
23 Not Used Not Used N/A Not Used
24 Not Used Not Used N/A Not Used
25 RPRNDL Fuse F25DA Fuse 10A Transmission Shift Lever Position Indicator
26 Not Used Not Used N/A Not Used
27 Not Used Not Used N/A Not Used
28 Not Used Not Used N/A Not Used
29 BLWR FRT Fuse F29DA Fuse 40A Blower Motor Control Module
30 BCM 3 Fuse F30DA Fuse 15A Body Control Module
31 AMP Fuse F31DA Fuse 30A Audio Amplifier
32 DLIS Fuse F32DA Fuse 5A Ignition Switch
33 CIM Fuse F33DA Fuse 10A Telematics Communication Interface Control Module (UE1)
34 BCM 2 Fuse F34DA Fuse 15A Body Control Module
35 SDM BATT Fuse F35DA Fuse 10A Inflatable Restraint Sensing and Diagnostic Module
36 DLC Fuse F36DA Fuse 7.5A Data Link Connector
37 IPC BATT Fuse F37DA Fuse 10A Instrument Cluster
38 IOS MDL Fuse F38DA Fuse 5A Passenger Presence Detection Sensor
39 Not Used Not Used N/A Not Used
40 BCM 8 Fuse F40DA Fuse 30A Body Control Module
Relays 
41 LOG RLY KR104A Logistic Mode Relay - Logistic Mode Relay 1 (EXP)
42 RAP RLY KR80 Accessory Relay - Accessory Relay
Fig 9: X51A Fuse Block - Instrument Panel, Top View
GM2367884Courtesy of GENERAL MOTORS CORP.
Fig 10: X51A Fuse Block - Instrument Panel, Bottom View
GM2367886Courtesy of GENERAL MOTORS CORP.
X51A Fuse Block - Instrument Panel (Wire Entry)

Pin Wire Circuit Function
A1 0.35 YE/BK 9231 Logisitics Relay Control (EXP)
A2 0.35 BK 1550 Ground
A3 0.35 YE 7546 Logisitics Relay Control (EXP)
A4 0.35 RD/WH 4240 Battery Positive Voltage (UWG)
0.35 RD/WH 4240 Battery Positive Voltage (UWG)
A5 0.35 RD/WH 4340 Battery Positive Voltage (VQN)
A6 0.8 RD/WH 340 Battery Positive Voltage
A7 0.35 RD/WH 3140 Battery Positive Voltage (UD7)
A8 0.5 RD/WH 3240 Battery Positive Voltage
A9 0.5 RD/WH 4140 Battery Positive Voltage (KTA)
A10 - - Not Used
B1 5 RD/BK 742 Battery Positive Voltage
C1 0.35 PK 539 Ignition Voltage
C2 0.35 PK 139 Ignition 1 Voltage
C3 0.35 PK 1139 Ignition Voltage
C4 - - Not Used
C5 1 PK 839 Ignition Voltage
C6 - - Not Used
D1 0.5 BK 1550 Ground
D2 0.35 PK 70 RAP Relay Switch Supply Voltage
D3 1 D-GN 801 RAP 2 Fuse Supply Voltage
D4 1 D-GN 1001 RAP 1 Fuse Supply Voltage
D5 1 D-GN 1301 RAP Fuse Supply Voltage (UZ8)
D6 0.35 RD/BK 1002 RAP 1 Fuse Supply Voltage
D7 - - Not Used
E1 3 RD/WH 4040 Battery Positive Voltage
E2 0.8 RD/WH 2140 Battery Positive Voltage
E3 0.5 RD/WH 3840 Battery Positive Voltage
E4 1 RD/WH 2540 Battery Positive Voltage
E5 5 RD/BK 42 Battery Positive Voltage
E6 1 RD/WH 4640 Battery Positive Voltage (UZ8)
E7 0.8 RD/WH 3340 Battery Positive Voltage
E8 0.8 RD/WH 2940 Battery Positive Voltage
E9 0.5 RD/WH 3440 Battery Positive Voltage
E10 - - Not Used
F1 5 RD/BK 542 Battery Positive Voltage
F2 0.8 RD/WH 2740 Battery Positive Voltage
F3 2 RD/WH 3740 Battery Positive Voltage (UZ8)
F4 0.35 RD/WH 540 Battery Positive Voltage
F5 5 RD/BK 1642 Battery Positive Voltage
F6 0.5 RD/WH 5340 Ground (UE1)
F7 0.8 RD/WH 2240 Battery Positive Voltage
F8 0.5 RD/WH 4440 Battery Positive Voltage
F9 0.35 RD/WH 40 Battery Positive Voltage
F10 0.35 RD/WH 2840 Battery Positive Voltage
F11 0.35 RD/WH 2040 Battery Positive Voltage (without APL)
F12 - - Not Used
G1 0.5 YE 6817 LED Backlight Dimming Control
G2-G2 - - Not Used
G3 0.35 WH 824 Audio Diagnostic Signal (VQN)
H1 0.35 YE 6817 LED Backlight Dimming Control
H2-H3 - - Not Used
Connector Part Information 
  • Harness: Instrument Panel
  • OEM: 13712077 (UE1)
  • OEM: 13712078 (without UE1)
  • Service: 20777299 (UE1)
  • Service: 20777300 (without UE1)
  • Description: 48-Way F Fuse Block (BK)
Terminal Part Information 
  • Pins: B1, E5, F5
  • Terminated Lead: 13575718
  • Release Tool: J-38125-558
  • Diagnostic Test Probe: J-35616-44 (YE)
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Pins: F3
  • Terminated Lead: Pending
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 12110842/4
  • Core/Insulation Crimp: A/B
  • Pins: A4-A9, C1-C3, C5, D1-D6, E2-E4, E6-E9, F2, F4, F6-F11, G1, G3, H1
  • Terminated Lead: 13575721
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: Pins A5, A7, C1-C3, D2, D6, F4, F9-F11, G3, H1 - E/4
  • Core/Insulation Crimp: Pins A8, A9, D1, E3, E9, F6, F8, G1 - E/A
  • Core/Insulation Crimp: Pins A4, A6, C5, D3-D5, E2, E4, E6-E8, F2, F7 - C/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A1-A3
  • Terminated Lead: 13575713
  • Release Tool: J-38125-11A
  • Diagnostic Test Probe: J-35616-40 (BU)
  • Terminal/Tray: 12065892/18
  • Core/Insulation Crimp: A/F
  • Pins: E1, F1
  • Terminated Lead: Pending
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-43 (RD)
  • Terminal/Tray: 15410292/23
  • Core/Insulation Crimp: Pins E1 - G/F/G/F
  • Core/Insulation Crimp: Pins F1 - G/F/G
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