GM 12 Pin OBD1 to 16 Pin OBD2 Adapter Cable – Diagnostic Cable for Workshops

GM 12 Pin OBD1 to OBD2 adapter cable for stable diagnostic connections

• ✔ Precisely fitting 12-pin to 16-pin OBD2 adapter for GM vehicles with a manufacturer-specific diagnostic port
• ✔ Stable signal transfer for reliable diagnostic work
• ✔ Sturdy plug connections for daily workshop use
• ✔ High-quality contacts to minimise connection faults
• ✔ Designed for professional diagnostic environments and private users

The GM 12 Pin OBD1 adapter cable connects the manufacturer-specific 12-pin diagnostic port on the vehicle to the standard 16-pin OBD2 socket. Existing OBD2 diagnostic devices, workshop interfaces and handheld scanners can therefore continue to be used without buying a special solution.

This item is an adapter or connecting cable, not a diagnostic device or scanner. The actual diagnostic function depends on the diagnostic device used and the scope of its software.

Please note: not the banana plug version

On the tool side, this cable ends in a standard 16-pin OBD2 socket. It is not to be confused with the cable also available in our shop, “GM 12Pin to 6 banana plugs adapter cable for KTS diagnostic devices”, which is intended for Bosch KTS devices with banana plug connections.

If your diagnostic device has a normal 16-pin OBD2 plug, this cable is the right one.

What the adapter is needed for

Before the uniform 16-pin OBD2 connector was introduced, manufacturers fitted their own diagnostic sockets. A modern diagnostic device with an OBD2 connection does not fit there directly. The adapter cable creates the physical link required for the diagnostic hardware to communicate with the vehicle.

Clean signal transfer for reliable diagnostic data

During diagnostic work the quality of the data transfer is decisive. Low-quality adapters can cause dropped signals, communication errors or unstable connections.

The adapter cable has solid plug contacts and a robust cable structure to minimise interference during diagnosis. Communication between vehicle and diagnostic device therefore stays reliable even during longer work.

Robust build for workshop and everyday use

The cable was developed for frequent connecting and disconnecting. The hard-wearing sheath protects the wires from the strain of daily use.

• Hard-wearing cable sheath
• Precisely manufactured plug connections
• Firm fit without unnecessary play
• High contact quality to avoid transfer errors

Compatibility

The adapter is intended for vehicles with a manufacturer-specific 12-pin diagnostic port. On the tool side it ends in a standard 16-pin OBD2 socket and is therefore suitable for OBD2 handheld scanners, workshop diagnostic devices and USB and Bluetooth diagnostic interfaces.

Compatibility depends on the vehicle and the diagnostic device. Before buying, please check on the vehicle whether a 12-pin port is actually fitted, and whether the diagnostic device and its software support the vehicle systems you need. Which functions are available depends solely on the diagnostic device and the scope of its software.

Areas of use

• Reading fault codes with compatible devices
• Monitoring live data and sensor readings
• Diagnostic work in workshops
• Checking a vehicle before purchase or servicing
• Communicating with control units via compatible diagnostic hardware

Technical data

Scope of delivery

– GM 12 Pin OBD1 to 16-pin OBD2 adapter cable

Purchase on account available (Klarna or PayPal).

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You can choose to pay by bank transfer (prepayment), PayPal (direct debit and credit card via PayPal), Klarna (purchase on account or installment payment), Shop Pay, Google Pay or cash on delivery. If cash on delivery is selected as the payment method, an additional fee of €9.99 will be charged.

Free shipping within Germany for orders over €50.

Shipping costs within the EU are €14.99. For orders over €100, shipping within the entire EU is free.

The delivery time within Germany is usually 1–3 business days.

Worldwide shipping – to countries outside the EU – is also available. The applicable shipping costs are calculated and displayed during checkout depending on the destination country. For deliveries to countries outside the EU, additional customs duties, import taxes or other charges may apply, which are to be borne by the customer.