GM Service Manual Online
For 1990-2009 cars only
Table 1: Telematics Module - X1
Table 2: Telematics Module - X2
Table 3: Telematics Module - X3
Table 4: Telematics Antenna

Telematics Module - X1


Object Number: 1989574  Size: CH

Connector Part Information

040 Multilock Mark II Series

Pin

Wire Colour

Wire Size

Function

X1-1

XX

XX

Ground

X1-2

--

--

--

X1-3

L-GN

0.3

Low Speed GMLAN Serial Data

X1-4

--

--

--

X1-5

--

--

--

X1-6

--

--

--

X1-7

OG/WH

0.5

Battery Positive Voltage

X1-8

YE/BK

0.3

Keypad Green LED Signal

X1-9

BN/WH

0.3

Keypad Red LED Signal

X1-10

--

--

--

X1-11

--

--

--

X1-12

--

--

--

Telematics Module - X2


Object Number: 1989577  Size: CH

Connector Part Information

040 Multilock Series

Pin

Wire Colour

Wire Size

Function

X2-13

D-GN/WH

0.3

Keypad Signal

X2-14

--

--

--

X2-15

L-BU

0.3

Telephone Audio Signal (+)

X2-16

OG/BK

0.3

Telephone Audio Signal (-)

X2-17

L-BU

0.3

Telephone Audio Signal (+)

X2-18

PK

0.3

Cellular Telephone Microphone Low Reference

X2-19

GN

0.3

Cellular Microphone Signal

X2-20

TN

0.5

Left Front Speaker Output (+)

OG

0.5

Front Center Speaker Output (+)

X2-21

L-GN/BK

0.3

Keypad Supply Voltage

X2-22

PK

0.5

Ignition 1 Voltage

X2-23

WH

0.3

Telephone Audio Signal Mute

X2-24

--

--

--

X2-25

OG/BK

0.3

Telephone Audio Signal (-)

X2-26

--

--

--

X2-27

--

--

--

X2-28

GY

0.5

Left Front Speaker Output (-)

L-BU

0.5

Front Center Speaker Output (-)

Telematics Module - X3


Object Number: 1989580  Size: CH

Connector Part Information

 

Pin

Wire Colour

Wire Size

Function

P1

GY

--

GSM antenna post

S1

BARE

--

GSM antenna shield

P2

GY

--

GPS antenna post

S2

BARE

--

GPS antenna shield

Telematics Antenna


Object Number: 1989585  Size: CH

Connector Part Information

 

Pin

Wire Colour

Wire Size

Function

P1

GY

--

GSM antenna post

S1

BARE

--

GSM antenna shield

P2

GY

--

GPS antenna post

S2

BARE

--

GPS antenna shield