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SS Tuning

Replacement Base Harness GM LS GEN3/4

Replacement Base Harness GM LS GEN3/4
$1,095.00 USD
$1,095.00 USD
Sale Sold out

SKU:101-0300
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Replacement Base Harness GM LS GEN3/4
$1,095.00 USD
$1,095.00 USD

Replacement Engine Harness to cover a wide range of GM LS Engine Variations. Please note that due to the large number of Engines supported it may require user modification for some applications, see Installation Manual or Contact Links Tech Support team to confirm suitability for your Engine. 

PCLink start up MAPs available for both Gen3 and Gen4 LS 

Engines Supported

Gen 3 LS1/LS6     
Gen 4 LS2/LS3/LS7*

Compatible ECUs

G4X StormX (Cable Operated Throttle Body)

G4X XtremeX (Cable Operated and Drive-by-Wire Throttle Body)


See features tab and installation manual for further details.


*Notes for use with Gen 4 Engines

1.    A cam sensor harness extension will be needed to accommodate the Gen 4 LS front mounted cam sensor.      
2.    A small modification is required to the crank sensor connector. See “crank connector” section in installation manual for details.      
3.    Injector Connector Adapters to USCar connector will be required for most Gen 4 Engines. Check your injector connector to confirm. Use Link PN 101-0287      
4.    To support Gen 4 factory knock sensors you will require the Link LS Gen 4 Knock Adapter Loom (PN 101-0306)     
5.    To support the factory Gen 4 MAP sensor you will require a Link LS Map Adapter Loom plus a Gen 3 to Gen 4 MAP sensor extension harness (alternatively you can use a Link MAP sensor which is directly supported by the harness)

Need Help With Installment?

Fill out the form below and we'll get back to you as soon as possible or give us a call.

Frequently ask questions

1. What Performance Products Do You Offer?

We offer a range of performance products, including engine management, electronics, fuel system components, sensors, accessories, and supporting hardware.

2. How Long Does It Take For My Order To Ship?

Most in-stock orders are processed as quickly as possible. Processing times may vary depending on product availability and order volume.

3. What If A Product Is Out Of Stock Or Backordered?

Availability can vary between products. If an item is unavailable or backordered, we'll provide updated information regarding your order when available.

4. How Do I Know If A Part Will Fit My Vehicle?

Always review the product information before ordering. If you're unsure about compatibility, contact us with your vehicle and setup information before purchasing.

5. Do You Ship Performance Parts Nationwide?

Shipping options are available for most products and destinations. Available methods and costs will be shown or provided during the ordering process.

What our Customers Say ?

  • I have ordered multiple times and always received exactly what was described. Every product has been genuine, fully functional, and consistently reliable.

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  • Shipping was smooth, tracking was accurate, and the order arrived even earlier than expected, making the whole delivery experience easy and reliable overall.

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  • I was struggling to get my ATOMX properly tuned and reached out to Link support. They walked me through every step over email and even gave me extra tips for my setup.

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  • I spent days searching for the right boost control module for my turbo setup. Link had exactly what I needed and included detailed specs that made everything.

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  • Installed my EVO9X last week and the difference is insane. Smooth idle, better throttle response, and the tuning options are next level. Worth every penny,

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