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X50A Fuse Block - Underhood Top View

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
GM4161992Courtesy of GENERAL MOTORS COMPANY
Usage Table

No. Device Label Name Device Assigned Name Rating Description
Fuses 
1 - 2 Empty - -
  • Not Used
3 ABS_PUMP F3UA 60A
  • K17 Electronic Brake Control Module
5 EMPTY F5UA -
  • Not Used
6 REAR CLOSR F6UA 7.5A
  • M40 Rear Compartment Lid Latch
7 ATWS HORN F7UA 7.5
  • Not Used
8 WNDW MIR SEATA F8UA 5A
  • S79D Window Switch - Driver
  • K40 Seat Memory Control Module
  • S146 Window/Outside Rearview Mirror Switch - Driver
9 EBOOST F9UA 5A
  • K177 Brake Booster Control Module (HP4)
  • K132 Pedestrian Alert Sound Control Module (HP4)
10 LT SEAT LUM/AIRBAG HEV F10UA 10A
  • K36 Inflatable Restraint Sensing and Diagnostic Module
  • K85 Passenger Pressence Module
11 DC DC BATT1 F11UA 40A
  • T19 Power Supply Transformer (KL9)
12 REAR DEFOG F12UA 40A
  • R14L Rear Window Defogger Noise Filter - Left
13 HTD MIR F13UA 10A
  • A9A Outside Rearview Mirror - Driver (DWK)
  • A9B Outside Rearview Mirror - Passenger (DWK)
14 Empty - -
  • Not Used
15 PEPS F15UA 5A
  • K84 Keyless Entry Control Module
16 FRT WPR F16UA 20A
  • M75 Windshield Wiper Motor
17 CODRVR PWR SEAT F17UA 30A
  • S64P Seat Adjuster Switch - Passenger (AAQ)
18 ABS VLV F18UA 30A
  • K17 Electronic Brake Control Module
19 DRVR PWR SEAT F19UA 30A
  • K40 Seat Memory Control Module (AE8 with A45)
  • S64D Seat Adjuster Switch - Driver (AE8 without A45)
20 Empty - -
  • Not Used
21 SUNROOF F21UA 30A
  • M69 Sunroof Motor (C3U)
22 PARKLIGHT F22UA 5A
  • KR53 Park Lamps Relay
23 AHL F23UA -
  • Not Used
24 - 25 Empty - -
  • Not Used
26 TCM IGN F26UA 15A
  • T6 Power Inverter Module (HP4)
27 IP BODY IGN F27UA 10A
  • A10 Inside Rearview Mirror (DD8)
  • K33 HVAC Control Module
  • P43 Collision Alert Indicators (UEU)
  • E40 Electrical Auxiliary Heater (C32)
  • K56 Serial Data Gateway Module
28 FUEL PUMP F28UA 10A
  • Not Used
29 RVC/VENT F29UA 10A
  • B87 Rearview Camera (UVC)
  • M73A Seat Blower Motor - Driver Back (KU9)
  • M73B Seat Blower Motor - Passenger Back (KU9)
  • M73C Seat Blower Motor - Driver Cushion (KU9)
  • M73D Seat Blower Motor - Passenger Cushion (KU9)
30 MIL SS F30UA 5A
  • K17 Electronic Brake Control Module (J71)
  • T19 Power Supply Transformer (KL9)
  • K111 Fuel Pump Driver Control Module
  • K114B Hybrid/EV Powertrain Control Module 2 (HP4)
  • K177 Brake Booster Control Module (HP4)
  • P16 Instrument Cluster
31 STRTR F31UA 30A
  • KR27 Starter Relay
32 CANISTER VENT SOL F32UA 5A
  • Q13 Evaporative Emission Vent Solenoid Valve (LTG/LFV)
  • Q63 Evaporative Emission System Leak Detection Pump Assembly (HP4)
33 FRT HTD SEAT F33UA 15A
  • K29F Seat Heating Control Module - Front (KA1)
34 SEAT/BSMESS FAN F34UA 10A
  • G14 Hybrid/EV Battery Pack Cooling Fan (HP4)
  • K114B Hybrid/EV Powertrain Control Module 2 (HP4)
35 BCM 6 / BCM 7 F35UA 10A
  • K9 Body Control Module
36 FUEL MDL F36UA 20A
  • K111 Fuel Pump Driver Control Module
37 - 42 Empty - -
  • Not Used
43 HTD WHL F43UA 15A
  • K32 Steering Wheel Heating Control Module (UVD)
44 HDLP LVL F44UA 10A
  • Not Used
45 Empty - -
  • Not Used
46 ECM IGN F46UA 15A
  • K20 Engine Control Module
47 Empty - -
  • Not Used
48 EBOOST (HEV) F48UA 60A
  • K177 Brake Booster Control Module (HP4)
49 DC DC BATT F49UA 40A
  • T19 Power Supply Transformer (KL9)
50 - 56 Empty - -
  • Not Used
57 TRANS AUX PUMP F57UA 40A
  • Not Used
58 HI BEAM LT/RT F58UA 60A
  • E13RA Headlamp Assembly - Right
  • E13LA Headlamp Assembly - Left
  • E4E Headlamp - Left High Beam
  • E4F Headlamp - Right High Beam
59 COOL FAN F59UA 60A
  • G10 Cooling Fan Motor
60-63 Empty - -
  • Not Used
64 A/C HEV F64UA 10A
  • KR29 A/C Compressor Clutch Relay
65 - 68 Empty - -
  • Not Used
69 LO BEAM HID RT F69UA 20A
  • Not Used
70 LO BEAM HID LT F70UA 20A
  • Not Used
71 STRTR PINION F71UA 40A
  • KR27C Starter Pinion Solenoid Actuator Relay (KL9)
72-73 Empty - -
  • Not Used
74 ECM MAIN F74UA 20A
  • K20 Engine Control Module
75 ECM SENSE F75UA 25A
  • K20 Engine Control Module
76 Empty - -
  • Not Used
77 HORN F77UA 20A
  • P12L Horn - Left
  • P12R Horn - Right
78 WASH PUMP F78UA 20A
  • KR11 Windshield Washer Pump Relay
79 Empty - -
  • Not Used
80 TCM/ECM F80UA 15A
  • K20 Engine Control Module (LFV or LTV)
  • K71 Transmission Control Module (MNH)
  • T6 Power Inverter Module (HP4)
81 Empty - -
  • Not Used
82 IGN COIL F82UA 15A
  • K20 Engine Control Module
83 PWR/TRN ON ENG F83UA 15A
  • K20 Engine Control Module
84 ECM SW 2 F84UA 60A
  • F82UA
  • F83UA
  • F87UA
85 Empty - -
  • Not Used
86 ECM SW 1 F86UA 60A
  • Not Used
87 AERO SHUTTER F87UA 10A
  • M96A Active Grill Air Shutter 1 Actuator
  • M96B Active Grill Air Shutter 2 Actuator
88 Empty - -
  • Not Used
89 HDLP WASH F89UA 25A
  • Not Used
90 - 91 Empty - -
  • Not Used
92 TPIM MGU PMP F92UA 10A
  • T6 Power Inverter Module
  • G35 Hybrid/EV Electronics Coolant Pump (HP4)
93 HDLP LVL F93UA 10A
  • Not Used
94 Empty - -
  • Not Used
95 SAIR SOL F95UA 15A
  • Not Used
96 FUEL HTR F96UA 25A
  • Not Used
97 - 98 Empty - -
  • Not Used
99 COOL PUMP F99UA 10A
  • G36 Auxiliary Heater Coolant Pump (HP4) or (LFV with KL9)
Relays 
4 Empty - -
  • Not Used
20 REAR DEFOG KR5 Rear Defogger Relay -
  • F12UA
  • F13UA
25 FRT WPR CNTRL KR12B Windshield Wiper Relay -
  • F16UA
31 RUNCRNK KR73 Ignition Main Relay -
  • F26UA
  • F27UA
  • F28UA
  • F29UA
  • F30UA
  • F40UA
  • F43UA
  • F46UA
37 FRT WPR SPEED KR12C Front Wiper Speed Relay -
  • M75 Windshield Wiper Motor
42 TRANS AUX PUMP - -
  • Not Used
64 A/C CNTRL KR29 A/C Compressor Clutch Relay -
  • Q2 A/C Compressor Clutch
66 PWR/TRN KR75 Engine Controls Ignition Relay -
  • F64UA
  • F74UA
  • F83UA
  • F84UA
  • F85UA
  • F87UA
71 LO BEAM HID - -
  • Not Used
73 STRTR MTR KR27 Starter Relay -
  • F31UA
80 STRTR MTR KR27C Starter Pinion Solenoid Actuator Relay (KL9) -
  • M64 Starter Motor
90, 94, 96 Empty - -
  • Not Used
Important: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block 
- - KR3 Horn Relay -
  • F77UA
- - KR11 Windshield Washer Pump Relay -
  • G24 Windshield Washer Pump Relay
- - KR33 Auxiliary Heater Coolant Pump Relay -
  • F99UA
- - KR48 Headlamp High Beam Relay -
  • F58UA
- - KR53 Park Lamp Relay -
  • E42L Tail Lamp Assembly - Left
  • E42R Tail Lamp Assembly - Right
  • E58L Rear Compartment Lid Tail Lamp Assembly - Left
  • E58R Rear Compartment Lid Tail Lamp Assembly - Right
- - KR95B Rear Compartment Lid Unlatch Relay -
  • M40 Rear Compartment Lid Latch
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