Viper THGMN2 | T-Harness for Older GM Vehicles

One harness covers your entire GM vehicle range from 2006-2017.

Product Overview

The Viper THGMN2 T-Harness is a comprehensive wiring solution designed for installing Viper DS4 and DS4+ remote start systems across General Motors' extensive vehicle lineup. This versatile harness covers multiple GM brands including Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, and Saturn vehicles manufactured between 2006 and 2017, making it an essential component for workshops servicing diverse GM fleets.

Engineered specifically for GM's electrical architecture during this era, the THGMN2 provides plug-and-play connectivity that eliminates wire cutting and maintains all factory vehicle functions. The extensive compatibility list makes this harness particularly valuable for professional installers who work on various GM platforms, reducing inventory requirements while ensuring reliable installations.

Key Specifications

• Compatible with both Viper DS4 and DS4+ remote start systems
• Extensive GM coverage: Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saturn
• Model year coverage: 2006-2017 (varies by specific vehicle)
• Plug-and-play installation - no wire cutting required
• GM-specific connector design for factory electrical systems
• Maintains all original vehicle functions during installation
• Professional-grade automotive wiring and connectors

Features & Benefits

Extensive GM Brand Coverage - Single harness supports multiple GM divisions, reducing inventory complexity for installers while covering popular models like Silverado, Tahoe, Escalade, and Traverse.

Dual System Compatibility - Works with both DS4 and DS4+ systems, providing flexibility for customers choosing between remote start only or remote start with security features.

Professional Installation Efficiency - Pre-wired GM-specific connections eliminate time-consuming wire identification, allowing installers to complete jobs faster across diverse GM platforms.

Factory Integration Excellence - Maintains all original GM features including OnStar compatibility, steering wheel controls, and vehicle diagnostic systems throughout installation.

Wide Model Year Span - Covers over a decade of GM vehicles, making it valuable for workshops servicing both newer and older GM models in the Australian market.

Advantages & Limitations

Advantages:

• Single harness covers multiple GM brands and models (2006-2017)
• Dual DS4/DS4+ compatibility increases installation versatility
• Significantly reduces installation time compared to universal harnesses
• Preserves all factory GM functions including OnStar systems
• Professional-grade connections ensure long-term Australian climate reliability

Limitations:

• Limited to specific GM models within the compatibility list
• Not universal - requires verification against specific vehicle list
• 2018+ GM vehicles use different electrical systems and require newer harnesses

Technical Specs

• System compatibility: Viper DS4 and DS4+ remote start systems
• Brand coverage: Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saturn
• Model year range: 2006-2017 (specific years vary by vehicle)
• Connection type: GM-specific plug-and-play connectors
• Installation method: T-harness (inline with factory wiring)
• Wire gauge: Not specified
• Harness length: Not specified
• Operating temperature range: Not specified

Frequently Asked Questions

Does this work with all GM vehicles from 2006-2017? No, only specific models listed in the compatibility chart. Always verify your exact vehicle before ordering.

Will this maintain OnStar functionality? Yes, the T-harness design preserves all factory GM systems including OnStar connectivity.

Can I use this for 2018+ GM vehicles? No, GM updated their electrical systems after 2017. Newer vehicles require different harnesses.

Does it work with both DS4 and DS4+ systems? Yes, this harness is compatible with both Viper DS4 and DS4+ remote start systems.

Compatible With / Goes Well With

• Viper DS4 remote start systems
• Viper DS4+ remote start and security systems
• Compatible GM Vehicles: • Buick: Enclave (2008-2017), Lucerne (2006-2011), Verano (2012-2017) • Cadillac: CTS (2008-2013), CTS Coupe (2011-2014), CTS Wagon (2010-2014), DTS (2006-2011), Escalade (2007-2014), SRX (2007-2009) • Chevrolet: Avalanche (2007-2013), Silverado (2007-2017), Suburban (2007-2017), Tahoe (2007-2014), Traverse (2009-2017), Impala (2006-2016), Express Van (2008-2016), Caprice (2011-2013), Monte Carlo (2006-2007) • GMC: Acadia (2007-2016), Savana (2008-2016), Sierra (2007-2014), Yukon (2007-2014) • Hummer: H2 (2008-2010) • Pontiac: G8 (2008-2009) • Saturn: Outlook (2007-2010), VUE (2008-2010)

Note: Always verify your specific GM vehicle model and year against this compatibility list before ordering.