7-56
Electrical Component and Inline Harness Connector End Views
Terminal Part Information (cont'd)
Terminal
Type ID
Terminated
Lead
Diagnostic
Test Probe
Terminal
Removal Tool
Service Terminal
Tray
Name
Core
Crimp
Insulation
Crimp
V
84757974
J-35616-
14 (GN)
J-38125-215A
Not Available
Not
Required
Not
Required
Not
Required
X61A Junction Block - Instrument Panel X4
Pin
Size
Color
Circuit
Function
Terminal
Type ID
Option
1
2.5
YE/BN
967
—
III
—
2
0.35
YE/VT
2516
Keypad Green LED Control
II
—
3
0.35
BK/L-GN
552
Sensor Low Reference 5
I
—
4
0.5
WH
2501
High Speed GMLAN Serial Data [-] 1
II
—
5
0.5
D-BU
2500
High Speed GMLAN Serial Data [+] 1
I
—
6
0.5
YE
6817
LED Backlight Dimming Control 1
II
—
7
0.35
L-GN/WH
2514
Keypad Signal
II
—
8
0.35
GY/RD
598
HVAC Air Inlet 5 Volt Reference
II
—
9
0.35
WH/L-GN
526
Stop Lamp Switch Signal 2
II
—
10
0.35
D-BU/YE
1693
Four Wheel Drive Switch Signal
II
—
11
—
—
—
Not Occupied
—
—
12
2
RD/L-GN
968
—
V
—
13
—
—
—
Not Occupied
—
—
14
0.35
BN
1560
Neutral Indicator Control
II
—
15
0.35
GY/RD
6029
Four Wheel Drive Mode Switch 5V Reference
II
—
16
2.5
BK
1050
Ground 10
III
—
17
—
—
—
Not Occupied
—
—
18
2.5
GY/BK
966
—
III
—
19
0.35
L-GN/BK
2515
Keypad Control
II
—
20
2.5
RD/L-GN
968
—
III
—
21
0.5
VT/L-GN
7558
Front Footwell Accent Lighting Control
II
—
22
0.35
BN/WH
2517
Keypad Red LED Control
II
—
23
0.35
BN/BK
1566
4WD HI Indicator Control
II
—
24
0.35
VT/WH
1565
4WD LO Indicator Control
II
—
25
0.35
VT/L-GN
1739
Run/Crank Ignition 1 Voltage 17
II
—
26
—
—
—
Not Occupied
—
—
27
0.35
GY/L-GN
328
Dome/Reading Lamp Disable Switch Signal
II
—
28 - 30
—
—
—
Not Occupied
—
—
31
1.5
RD/YE
2340
Secondary Fused Battery Positive Voltage 23
III
—
32
0.5
BK/WH
1851
Ground 18
II
—
33
0.35
0.5
BK/WH
BK/WH
1851
1851
Ground 18
Ground 18
IV
—
—
34
—
—
—
Not Occupied
—
—
35
2.5
BK/WH
1851
Ground 18
III
—
36 - 37
—
—
—
Not Occupied
—
—
38
0.5
BK/WH
1851
Ground 18
II
—
39
0.35
BK/WH
1851
Ground 18
II
—
40
0.35
L-GN/BK
1563
2WD HI Indicator Control
II
—
41 - 43
—
—
—
Not Occupied
—
—
2021 - Silverado 4500HD, 5500HD, and 6500HD Electrical Body Builder Manual