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AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  1. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  2. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  3. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  4. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  5. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  6. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  7. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  8. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  9. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
  10. AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter

AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter

US$15.90

Key Features
  • GM 12-Pin Fit
  • 41 cm Reach
  • OBD2 Conversion
Key Features
☰ REQUEST BULK / B2B QUOTERequest B2B Quote
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AUTOOL OBD2 Adapter Cable

Product Overview

The AUTOOL GM 12 pin to 16 pin OBD2 adapter cable is designed to connect compatible GM 12-pin diagnostic ports with 16-pin OBD2 diagnostic equipment. It helps extend the diagnostic connection, reduce port strain, and support more convenient scan tool operation during vehicle maintenance.

GM 12 Pin To 16 Pin 410mm Length Nylon Braided Cable Copper Wire Core
410mmCable Length
125gNet Weight
NylonOuter Material
3 YearsSupport
AUTOOL GM 12 pin to 16 pin OBD2 adapter cable main product image Click to enlarge
Compatibility And Fitment

Compatibility And Fitment

This adapter cable is useful when the vehicle diagnostic socket and the diagnostic tool use different connector formats. Please confirm the vehicle-side port shape and pin layout before purchase.

For Matching GM 12-Pin Ports

Use this cable only when the vehicle has a compatible GM 12-pin diagnostic interface.

16-Pin OBD2 Diagnostic Side

The cable helps connect to 16-pin OBD2 diagnostic equipment when the tool and vehicle connector are compatible.

Adapter Cable Only

This product is a connection adapter cable. It does not add diagnostic functions by itself and does not replace a scan tool.

Key Features

Key Features

The cable combines a short 410mm extension, reinforced outer material, copper wire core, and compact connector design for workshop and personal diagnostic use.

410mm Short Extension

The 41cm cable length helps reduce direct pulling on the vehicle diagnostic port while keeping the setup compact.

Copper Wire Core

The cable uses copper wire conductors to support stable data transmission between the vehicle port and diagnostic equipment.

Nylon Braided Protection

The reinforced nylon outer layer helps improve flexibility, wear resistance, and daily-use durability.

Lightweight Design

At about 125g, the cable is easy to store in a toolbox, diagnostic kit, or vehicle service bag.

Compact Connector Body

The connector shape is designed for quick plug-in use during diagnostic checks and maintenance work.

3-Year Support

AUTOOL provides support for eligible product issues, connector questions, and compatibility confirmation.

AUTOOL OBD2 adapter cable all copper wire stable data transmission feature Click to enlarge
AUTOOL OBD2 adapter cable durable nylon material feature Click to enlarge
AUTOOL OBD2 adapter cable suitable for general 12 pin car diagnostic interface Click to enlarge
AUTOOL OBD2 adapter cable weight and strengthened nylon material comparison Click to enlarge
AUTOOL OBD2 adapter cable 3 year warranty and cable diameter comparison Click to enlarge
Specifications

AUTOOL GM 12 Pin To 16 Pin OBD2 Adapter Cable Specifications

Check the cable length, weight, material, connector size, and diagnostic interface compatibility before ordering.

1>
Core Information
ProductAUTOOL GM 12 Pin To 16 Pin OBD2 Adapter Cable
UseDiagnostic adapter / extension cable
Vehicle SideCompatible GM 12-pin diagnostic interface
Diagnostic Tool Side16-pin OBD2 diagnostic interface
Length410mm / 16.14in
Weight125g
MaterialNylon braided outer layer
Wire CoreCopper wire
Connector Widths Shown40mm / 1.57in and 47mm / 1.85in
Support3-year support for eligible cases
AUTOOL GM 12 pin to 16 pin OBD2 adapter cable length and connector dimensions Click to enlarge
Core Specifications
ProductGM 12 Pin To 16 Pin OBD2 Adapter Cable
Length410mm / 16.14in
Weight125g
MaterialNylon braided outer layer
Wire CoreCopper wire
Connector Widths40mm / 47mm shown in image
How To Use

How To Use

Use the cable only after confirming that the vehicle diagnostic port and diagnostic tool connector match the adapter.

Check The Vehicle Port

Confirm that the vehicle has a compatible GM 12-pin diagnostic interface before connecting the cable.

Connect The Adapter

Plug the vehicle-side connector into the diagnostic port, then connect the 16-pin OBD2 side to the compatible diagnostic tool.

Start Diagnostic Work

Operate the diagnostic tool according to the tool manual and the vehicle service procedure.

AUTOOL GM 12 pin to 16 pin OBD2 adapter cable product list and package contents Click to enlarge
What Is In The Box

What Is In The Box

The package image shows the AUTOOL adapter cable and protective package. No diagnostic scanner is included.

Main Item1 × AUTOOL GM 12 pin to 16 pin OBD2 adapter cable
PackagingProtective package shown in the product list image
Not IncludedDiagnostic scanner, vehicle ECU tool, and additional adapters are not included unless shown or selected separately.
Before You Order And Use

Before You Order And Use

This is a physical adapter cable. Diagnostic success still depends on the vehicle, diagnostic tool, and supported communication protocol.

Check Pin Layout First

Confirm the vehicle diagnostic socket shape and pin count before ordering. Do not rely only on vehicle brand name.

Not A Scanner

The cable only adapts the connection. It does not read codes, clear codes, or add functions without a compatible diagnostic tool.

Protocol Support Depends On Tool

The connected diagnostic tool must support the target vehicle and protocol. The cable alone cannot guarantee communication.

Avoid Excessive Pulling

Keep the cable relaxed during testing and avoid bending the connector sharply at the vehicle port.

Keep Away From Heat

Do not route the cable near hot engine parts, moving belts, fans, or sharp metal edges during service.

Confirm Before Purchase

If you are not sure whether your vehicle uses the matching GM 12-pin diagnostic port, contact support with a photo of the port.

Warranty And Contact

Warranty And Contact

Contact AUTOOL Store before ordering if you need help confirming connector type, vehicle fitment, diagnostic tool compatibility, or package contents.

Pre-Sales And Product Support

Send a clear photo of your vehicle diagnostic port and the diagnostic tool connector if you need confirmation before purchase.

  • GM 12-pin diagnostic port confirmation
  • 16-pin OBD2 tool connector confirmation
  • Adapter cable package content check
  • Order and compatibility support
  • 3-year support for eligible product issues
Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

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AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter

US$15.90

Add to cart This product has multiple variants. The options may be chosen on the product page