GM/Daewoo 12-pins OBD1 to 16-pins OBD2 Adapter Cable – Passenger Car
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GM/Daewoo 12-pins OBD1 to 16-pins OBD2 Adapter Cable – Passenger Car
The GM/Daewoo 12-pin to 16-pin OBD2 adapter cable is a specific diagnostic adapter designed to connect modern reading equipment to older passenger cars from General Motors and Daewoo. Many models produced before the global introduction of the OBD2 standard use a 12-pin ALDL (Assembly Line Diagnostic Link) connector. This connection, often found under the dashboard on the driver's side, is physically incompatible with the 16-pin plugs of contemporary scanners.
This adapter functions as an indispensable bridge connecting the pins of the 12-pin port to the corresponding inputs on a 16-pin OBD2 scanner. This allows both the professional mechanic and the do-it-yourselfer to read the onboard computer of these vehicles with a suitable, protocol-compatible scanner. Using the cable significantly simplifies fault diagnosis compared to older, manual methods.
Application and functionality:
The primary application of this adapter cable is to enable electronic diagnostics on older GM and Daewoo vehicles. By using the adapter in combination with a scanner that supports the specific OBD1 protocols of these brands, the user can access the engine management system.
The functionality includes reading and clearing fault codes (DTC's) and, depending on the scan tool, viewing live sensor data.
Compatible with the following vehicle makes and models:
This adapter cable is compatible with a range of older models from General Motors and Daewoo equipped with the 12-pin ALDL connector. Examples of compatible models include:
- Daewoo: Matiz, Lanos, Nexia, Espero
- GM (General Motors): Various North American models from Chevrolet, Pontiac, Buick, and Oldsmobile before 1996
- Opel/Vauxhall: Some early models such as the Corsa, Astra, and Vectra with 12-pin port (not to be confused with Opel 10-pin)
It is strongly recommended to always check the physical connection in the vehicle before purchase.
Package Contents:
- 1x GM/Daewoo 12-pin OBD1 to 16-pin OBD2 adapter cable
Technical specifications:
| Specification | Description |
|---|---|
| Connector A | GM/Daewoo 12-pin ALDL male connector |
| Connector B | Standard 16-pin OBD2 (J1962) female connector |
| Cable Type | Passive adapter cable (no internal software or protocol conversion) |
| Cable Length | Approximately 20 to 40 cm (depending on manufacturer) |
| Pinout | Connect the essential pins for power supply, ground, and the data line (Serial Data) to the correct positions on the 16-pin connector |
