User Manual

Page 10 of 12
Table C
ECM/PCM Speed Output Information for Common GM Vehicles
Vehicle Year
ECM/PCM
Connector
Pin Wire Color
Circuit
Number
Camaro/Firebird 1996-1997 C2 (Black) 8 Dark Green/White 817
Camaro/Firebird 1998 C1 (Red) 55 Dark Green/White 817
Camaro/Firebird 1999-2002 C2 (Red) 50 Dark Green/White 817
Camaro 2010-2013 C1 (Black) 57 N/A N/A
CK Truck 1999-2002 C2 (Red) 50 Dark Green/White 817
CK Truck 2003-2006 C2 (Green) 50 Dark Green/White 817
CK Truck
2007-2008*
C1/X1 (Black) 57 Yellow/Black 1827
CK Truck 2009-2012 C1 (Black) 57 N/A N/A
Corvette 1996 C2 (Black) 8 Dark Green/White 817
Corvette 1997-1998 C1 (Red) 55 Dark Green/White 817
Corvette 1999-2003 C2 (Red) 50 Dark Green/White 817
Corvette 2004 C2 (Green) 50 Dark Green/White 817
Corvette 2005 C1 (Blue) 21 Dark Green/White 817
Corvette (Except ZR1) 2006-2013 C1/X1 (Black) 57 Dark Green/White 817
Corvette ZR1 2009-2013 X1 (Blue) 39 Dark Green/White 817
CTS-V 2004-2005 C2 (Green) 50 Brown 818
CTS-V 2006-2007 C1 (Blue) 39 Brown 818
CTS-V 2009-2012 C1 (Blue) 39 N/A N/A
GTO 2004 C2 (Green) 50 Purple/White 5197
GTO 2005-2006 C1 (Blue) 21 Purple/White 5197
SSR 2003-2004 C2 (Green) 50 Dark Green/White 817
SSR 2005-2006 C1 (Blue) 21 Dark Green/White 817
Trailblazer SS 2006 C1 (Blue) 21 Dark Green/White 817
Trailblazer SS 2007-2008 C1/X1 (Blue) 39 Dark Green/White 817
* For the 2007-2008 CK Trucks, pin 57 on the PCM/ECM connector may or may not be populated by
the wire listed above. If the pin position on the connector is not populated, the vehicle speed is being
relayed via CAN Bus. Refer to the instructions on the next page to recieve the vehicle speed signal for
vehicles that deliver the signal via CAN Bus.