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AUTOOL 41CM OBD2 Extension Cable Connector for GM 12 pin to 16pin OBD2 Adapter
US$16.00
Key Features
- GM 12-Pin Fit
- 41 cm Reach
- OBD2 Conversion
- GM 12-Pin Fit: Made for GM-style 12-pin vehicle connectors that need a 16-pin OBD2 tool connection.
- 41 cm Reach: Provides added length to place the scanner or adapter in a more accessible position.
- OBD2 Conversion: Acts as a connector adapter between the vehicle diagnostic port and standard OBD2 equipment.
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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
Click to enlargeCompatibility 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.
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Click to enlargeSpecifications
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.
| Core Information | |
| Product | AUTOOL GM 12 Pin To 16 Pin OBD2 Adapter Cable |
| Use | Diagnostic adapter / extension cable |
| Vehicle Side | Compatible GM 12-pin diagnostic interface |
| Diagnostic Tool Side | 16-pin OBD2 diagnostic interface |
| Length | 410mm / 16.14in |
| Weight | 125g |
| Material | Nylon braided outer layer |
| Wire Core | Copper wire |
| Connector Widths Shown | 40mm / 1.57in and 47mm / 1.85in |
| Support | 3-year support for eligible cases |
Click to enlargeCore 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.
Click to enlargeWhat 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 ensure 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
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