For 1990-2009 cars

Table 1: | Secondary Information Centre (SIC) Module - X1
Table 2: | Secondary Information Centre (SIC) Module - X2
Table 3: | Battery Voltage Gauge
Table 4: | Oil Temperature Gauge
Table 5: | Oil Pressure Gauge

#### Secondary Information Centre (SIC) Module - X1

Connector Part Information | Male
--- | ---
Pin | Wire Colour | Wire Size | Function
1 | YE | 0.35 | High Speed GMLAN Serial Data Bus-
2 | YE | 0.35 | High Speed GMLAN Serial Data Bus-
3 | YE | 0.35 | High Speed GMLAN Serial Data Bus+
4 | YE | 0.35 | --
5-7 | -- | -- | --
8 | BK/BU | 0.35 | Steering Wheel Position Sensor Low Reference
9-15 | -- | -- | --
16 | YE | 0.35 | High Speed GMLAN Serial Data Bus+
17 | YE | 0.35 | --
18-26 | -- | -- | --

#### Secondary Information Centre (SIC) Module - X2

Connector Part Information | Male
--- | ---
Pin | Wire Colour | Wire Size | Function
1 | D-GN | 0.3 | Low Speed GMLAN Serial Data
2 | -- | -- | --
3 | -- | -- | --
4 | RD/WH | 0.3 | Battery Positive Voltage
5 | -- | -- | --
6 | -- | -- | --
7 | -- | -- | --
8 | BK | 0.3 | Ground

#### Battery Voltage Gauge

Connector Part Information | Male
--- | ---
Pin | Wire Colour | Wire Size | Function
1 | YE | 0.3 | Low Speed GMLAN Serial Data
2 | BU | 0.3 | Ground
3 | BU / RE | 0.3 | Battery Positive Voltage
4 | YE | 0.3 | Low Speed GMLAN Serial Data
5 | BU | 0.3 | Ground
6 | BU / RE | 0.3 | Battery Positive Voltage

#### Oil Temperature Gauge

Connector Part Information | Male
--- | ---
Pin | Wire Colour | Wire Size | Function
1 | YE | 0.3 | Low Speed GMLAN Serial Data
2 | BU | 0.3 | Ground
3 | BU / RE | 0.3 | Battery Positive Voltage
4 | YE | 0.3 | Low Speed GMLAN Serial Data
5 | BU | 0.3 | Ground
6 | BU / RE | 0.3 | Battery Positive Voltage

#### Oil Pressure Gauge

Connector Part Information | Male
--- | ---
Pin | Wire Colour | Wire Size | Function
3 | YE | 0.3 | Low Speed GMLAN Serial Data
2 | BU | 0.3 | Ground
1 | BU / RE | 0.3 | Battery Positive Voltage
4 | YE | 0.3 | Low Speed GMLAN Serial Data
5 | BU | 0.3 | Ground
6 | BU / RE | 0.3 | Battery Positive Voltage