7-42
Electrical Component and Inline Harness Connector End Views
Usage Table (cont'd)
No.
Device
Label Name
Device
Assigned Name
Rating
Description
26
EXP PTO/SEO B1
F26DR
15A/15A
•
K44 Power Take - Off Control Module (PTO)
•
X191 Engine Chassis Harness to Engine Chassis
Harness (PTO)
27
USB/OBS DET
F27DR
10A
•
X83 Auxiliary Audio Input (-APL/D07)
28
BCM 2
F28DR
10A
•
K9 Body Control Module
•
B10B Ambient Light/Sunload Sensor
•
K17 Electronic Brake Control Module
•
K36 Inflatable Restraint Sensing and Diagnostic
Module
•
K44 Power Take-Off Control Module (PTO)
•
K56 Serial Data Gateway Module
•
K71 Transmission Control Module
•
K73 Telematics Communication Interface Control
Module (UE1)
•
K74 Human Machine Interface Control Module
(IO5/IO6)
•
K77 Remote Control Door Lock Receiver
•
K89 Immobilizer Control Module
•
KR12B Windshield Wiper Relay
•
S70L Steering Wheel Controls Switch - Left
•
S77 Transfer Case Shift Control Switch (NQF)
•
X61A Junction Block - Instrument Panel
•
X81 Accessory Power Receptacle - 110V AC (KI4)
29
EMPTY
F29DR
—
•
Not Used
30
EMPTY
F30DR
—
•
Not Used
31
UPFTR 3
F31DR
30A
•
X61A Junction Block - Instrument Panel
32
SEO B2
F32DR
30A
•
X61A Junction Block - Instrument Panel
33
EMPTY
F33DR
—
•
Not Used
34
EMPTY
F34DR
—
•
Not Used
35
AC INV
F35DR
25A
•
T1 Accessory DC/AC Power Inverter Module (KI4)
36
EMPTY
F36DR
—
•
Not Used
37
SPARE
F37DR
10A
•
Not Used
38
EMPTY
F38DR
—
•
Not Used
39
UPFTR 4
F39DR
30A
•
X61A Junction Block-Instrument Panel
•
KR150 Relay - Spare
40
EMPTY
F40DR
—
•
Not Used
41
EMPTY
F41DR
—
•
Not Used
42
RT DR
WNDW MTR
F42DR
30A
•
S79P Window Switch - Passenger (A31)
•
S79RR window Switch - Right Rear (Crew Cab)
43
FRT BLWR
F43DR
40A
•
M8 Blower Motor
44
INFOTMNT
F44DR
15A
•
A11 Radio (IOB)
2021 - Silverado 4500HD, 5500HD, and 6500HD Electrical Body Builder Manual
