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GM Automatic Diagnostic Connectors

Scan Tool for Codes and Live Data for your GM Transmission from $149.95

GM Automatic - Please select the connector for your vehicle from the options below.

 
OBD2 / EOBD connector

This is an OBD2 / EOBD standard 16 pin data link connector

To get a list of codes that relate to this system click here

This connector is usually located under the driver side dash panel.

GM Automatic Connector 80

Diagnostic Link Connector No. 80

Year range: 1980 to 1995

Locations: In the center console.

(GM_US_Trans) Use This Connector >
GM Automatic Connector 66

Diagnostic Link Connector No. 66

Year range: 1989 to 1995

Locations: Under the drivers side dash panel.

(GM_US_Trans) Use This Connector >
GM Automatic Connector 58

Diagnostic Link Connector No. 58

Year range: 1987 to 1995

Locations: Under the brake master cyliner.

(GM_US_Trans) Use This Connector >
GM Automatic Connector 17

Diagnostic Link Connector No. 17

Year range: 1988 to 1995

Locations: Near windscreen wiper motor or airflow meter wiring harness.

(GM_US_Trans) Use This Connector >
GM Automatic Connector 13

Diagnostic Link Connector No. 13

Year range: 1987 to 1995

Locations: Under the passengers seat.
Inside or below the glovebox.

Step 4
GM Trans Code Reading
Connector Diagram
Connector Location
Instructions
Saturn
  • For Saturn vehicles with Saturn Electronic Transmissions

  • PRESS "Saturn"
 Saturn 
GM
  • For all other GM vehicles and Saturn vehicles with GM Transmissions

  • PRESS "GM"
 GM 
GM Automatic Connector 12

Diagnostic Link Connector No. 12

Year range: 1988 to 1995

Locations: Near the left hand strut tower.
Near the right hand strut tower.

(GM_US_Trans) Use This Connector >
GM Automatic: For a vehicle coverage list Click Here


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