Ships across Canada from Markham · Installed at our shop or on-site in the GTA

T-harness

Fortin THAR-GM6 T-Harness for Buick, Cadillac, Chevrolet, GMC, and Opel

Name: Fortin THAR-GM6 T-Harness for Buick, Cadillac, Chevrolet, GMC, and Opel
Brand: Fortin
SKU: THAR-GM6
Price: 99.98 CAD
Availability: InStock

Plug-in harness for a Fortin remote starter

Harness

$99.98 CAD

The T-harness only. The Fortin module isn't included: get it on its own, or the kit with both.

Book the install Text us your year, make and model

Our verdict

The THAR-GM6 is the T-harness in our EVO-GMT6 and EVO-ONE-GM6 kits, for the push-button GM models in the vehicle list on this page (Buick, Cadillac, Chevrolet, GMC and Opel). It works with the Fortin EVO-ALL and the EVO-ONE. If you don't have a Fortin module yet, get the EVO-GMT6 kit, or the EVO-ONE-GM6 if you need the EVO-ONE, for example for a manual transmission. Either way the module comes programmed for your vehicle. Buy the harness on its own when you already have the module, or to replace a damaged one.

Jeff BatesOwner, Lockdown Security · Installing since 2003

A T-harness plugs into your vehicle's own connectors and into the Fortin module, so there's far less wiring than a hardwired install. It needs a Fortin module to work: see which ones below, or get the kit with both.

Plugs into your vehicle's own connectors
Needs a Fortin module (not included)
Or get the kit: module and harness together
Lifetime installation warranty when we install it
Free shipping on orders over $200

Compatibility

What it works with

This is the harness only. Here's which Fortin modules take it, and the kit that has both.

EVO-ONE Works with itSee the EVO-ONE · $189.99 CAD
EVO-X-ONE Doesn't work with itSee the EVO-X-ONE · $209.99 CAD
EVO-ALL Works with itSee the EVO-ALL · $109.99 CAD

Which Fortin module do you have?

Or get it as a kit

The Fortin module and this harness in one box, with the module programmed for your vehicle before it ships.

EVO-GMT6 The EVO-ALL and this harness in one box $194.99 CAD · save $14.98 CAD over buying the two separately See the EVO-GMT6 kit
EVO-ONE-GM6 The EVO-ONE and this harness in one box $289.97 CAD · same price as buying the two separately See the EVO-ONE-GM6 kit

The details

This is the Fortin THAR-GM6 plug and play t-harness accessory, for use with the Fortin EVO-ALL and EVO-ONE remote start system.

Specs

Makes: Buick, Cadillac, Chevrolet, GMC, Opel
SKU: THAR-GM6

Vehicle coverage

Vehicles this harness covers

The vehicles we list this harness's kit for, straight from our vehicle pages. Where the kit is our pick, you'll see what that vehicle needs. When we add a vehicle, it shows up here.

51 vehicles
5 makes
49 where it’s our pick

Find your vehicle: year, make or model

Buick7 vehicles

Enclave 2021–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Encore 2017–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Encore GX 2020–2026 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Envision 2017–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
LaCrosse 2010–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Regal 2011–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Verano 2012–2018 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5

Cadillac9 vehicles

ATS 2013–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
CT6 2013–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
CTS 2014–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Escalade 2015–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
SRX 2011–2016 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
XT4 2019–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
XT5 2017–2025 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
XT6 2020–2025 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
XTS 2013–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5

Chevrolet26 vehicles

Blazer 2019–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Camaro 2016–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Corvette 2014–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Cruze 2012 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Cruze 2013–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Equinox 2018–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Impala 2014–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Malibu 2013–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Malibu 2024–2025 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Silverado 1500 2019–2021 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Silverado 2500 2019 Push Button Start

Fits this vehicle. Our first choice for it: Compustar CM-X Remote Starter Kit for Chevrolet, GMC, Buick & Cadillac Key & Push Button Start (FTI-GMT3 + BLADE-AL)
Silverado 2500 2020–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Silverado 3500 2019 Push Button Start

Fits this vehicle. Our first choice for it: Compustar CM-X Remote Starter Kit for Chevrolet, GMC, Buick & Cadillac Key & Push Button Start (FTI-GMT3 + BLADE-AL)
Silverado 3500 2020–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Sonic 2017–2018 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Sonic 2019–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Spark 2016–2019 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Spark 2020–2022 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Suburban 2015–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Tahoe 2015–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Trailblazer 2021–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Trailblazer 2025–2026 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Traverse 2018–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Trax 2017–2022 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Trax 2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Trax 2025–2026 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5

GMC6 vehicles

Acadia 2017–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Sierra 1500 2019–2021 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Sierra 2500 2020–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Sierra 3500 2020–2023 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Terrain 2018–2024 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Yukon 2015–2020 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5

Opel3 vehicles

Astra K 2015–2018 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Mokka 2016–2018 Push Button Start
- Our pick: the EVO-GMT6 kit
- DECRYPTOR: DIY needs a FLASHLINK
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 2/5
Zafira 2011–2018 Push Button Start
- Our pick: the EVO-ONE-GM6 kit
- Plug and play
- Factory remote: lock 3 times
- Install difficulty 3/5

Installing it

Buy it from us and we can install it for you, or you can do it yourself.

At our shop or at your place

Drop it off or wait at our Markham shop, or we come to you in the GTA. Most installs can be done on-site; a few need the shop.

Lifetime installation warranty

Every install we do comes with our lifetime installation warranty.

Before it ships

Module programmed for your vehicle

Buying the module or the kit from us? Tell us your year, make and model at checkout and we program it before it ships. A vehicle marked DECRYPTOR finishes its programming at the vehicle, with a FLASHLINK if you install it yourself.

Installing it yourself?

Plenty of our customers do. A T-harness plugs into the vehicle's own connectors, but expect to make a few connections too. Check the install difficulty for your vehicle in the list above before you start, and text us your year, make and model with any questions.

Remote starter terms

What customers say

Verified reviews from our customers.

Testimonials

Exceptionally Helpful

They were exceptionally helpful despite me going down the DIY route having never installed a remote starter before. There was no T harness kit available for my vehicle which led to a few questions which they thankfully were very helpful with. Mission remote start was successful and I'm super pleased.

Stephen Anthony
DIY Client
10 out of 10

I would recommend Lockdown security 10 out of 10 times. Leo and his team were professional, fast acting and provided excellent service. I am very happy with my remote starter.

Jay
Enjoying a warm vehicle!
Responsive, Easy to Use

Have been using Lockdown Security for years. Just ordered the fifth remote starter from them and installed myself. Their website is easy to use and intuitive. They are responsive and more than willing to answer questions for the DIY customers. Would strongly recommend to anyone looking to purchase a remote starter.

Ayad
DIY Client

Common questions

Will it fit my vehicle?

Find your vehicle in the vehicle list on this page: it's every vehicle we list this harness's kit for, with a link to that vehicle's page. Not listed? Search by vehicle, or text us your year, make and model.

Is the remote starter included?

No. This is the T-harness only: it connects a Fortin module to your vehicle. The compatibility section shows which Fortin modules take it, and the kit that has both in one box.

Should I buy the kit or the harness on its own?

If you don't have the Fortin module yet, get the kit: the module and this harness together, with the module programmed for your vehicle before it ships. The harness on its own is for when you already have the module, or need to replace a harness.

Which Fortin modules does it work with?

It's on this page under What it works with. Fortin's THAR-ONE harnesses are made for the EVO-ONE only. Fortin's other THAR harnesses work with the EVO-ALL and the EVO-ONE.

Do you install it?

Yes, at our Markham shop or on-site in the GTA, with our lifetime installation warranty. Book an install.

Do you ship across Canada?

Yes. Shipping is free on orders over $200, and $10 under that.

Not sure it fits?

Text us your year, make and model and we'll confirm the right harness before you order.

Text us Email us Call 1-866-824-4118

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