Viper THGMN5 | T-Harness 2010 & Up General Motors DS4/DS4+

Tackle the latest GM SmartKey systems with confidence.

Product Overview

The Viper THGMN5 T-Harness is specifically engineered for modern General Motors vehicles equipped with SmartKey technology from 2010 onwards. This advanced wiring harness integrates seamlessly with Viper DS4 and DS4+ remote start systems, providing plug-and-play installation for GM's sophisticated electronic security systems including models like the Silverado, Sierra, Malibu, and Escalade.

Built to handle GM's evolving SmartKey architecture, the THGMN5 works with GM9 firmware and supports vehicles through to 2025 model years. This forward-compatible design makes it an essential component for installers working with newer GM platforms where traditional wiring approaches fail to integrate with advanced factory security systems.

Key Specifications

• Compatible with Viper DS4 and DS4+ remote start systems
• Designed for GM SmartKey vehicles 2010 onwards (select models to 2025)
• GM9 firmware compatibility for advanced vehicle integration
• Plug-and-play installation - no wire cutting required
• Specific compatibility: 2019+ Silverado/Sierra, 2013-2020 Malibu, 2015-2020 Escalade
• SmartKey system integration maintains factory security functions
• Professional-grade automotive wiring and connectors

Features & Benefits

SmartKey System Integration - Specifically designed to work with GM's advanced SmartKey technology, enabling remote start functionality while maintaining factory security and anti-theft systems.

GM9 Firmware Support - Compatible with GM's latest GM9 firmware, ensuring proper communication with modern vehicle control modules and preventing installation conflicts.

Latest Model Coverage - Supports newer GM vehicles including 2019+ Silverado and Sierra trucks, plus popular models like Malibu and Escalade through their recent generations.

Future-Ready Design - Engineering supports select GM vehicles through 2025, providing longevity for workshops investing in current installation technology.

Plug-and-Play Simplicity - Eliminates complex wiring modifications required for SmartKey vehicles, reducing installation time and potential errors on sophisticated GM platforms.

Advantages & Limitations

Advantages:

• Specifically designed for modern GM SmartKey technology
• Supports popular high-volume models like Silverado and Sierra
• GM9 firmware compatibility ensures proper system integration
• Plug-and-play design reduces installation complexity on advanced vehicles
• Future compatibility through select 2025 model years

Limitations:

• Limited to specific GM SmartKey models (not universal GM coverage)
• Requires GM9 firmware compatibility - not suitable for older GM systems
• Specific model year restrictions vary by vehicle platform

Technical Specs

• System compatibility: Viper DS4 and DS4+ remote start systems
• Vehicle requirement: GM SmartKey equipped vehicles 2010+
• Firmware support: GM9 compatible
• Confirmed compatibility: 2019+ Silverado/Sierra, 2013-2020 Malibu, 2015-2020 Escalade
• Model year span: Select GM vehicles 2010-2025
• Connection type: SmartKey-specific plug-and-play connectors
• Installation method: T-harness (inline with factory SmartKey wiring)
• Wire gauge: Not specified
• Operating temperature range: Not specified

Frequently Asked Questions

Will this work with older GM vehicles from 2006-2010? No, this harness is specifically for SmartKey equipped vehicles 2010+. Older GM vehicles require different harnesses.

What is GM9 firmware and do I need it? GM9 is GM's latest control module firmware. This harness requires GM9 compatibility for proper SmartKey integration.

Does it work with all Silverado and Sierra models? Only 2019+ Silverado and Sierra models are confirmed compatible. Earlier generations use different systems.

Will this maintain my vehicle's factory security? Yes, the SmartKey integration preserves all factory anti-theft and security functions.

Compatible With / Goes Well With

• Viper DS4 remote start systems
• Viper DS4+ remote start and security systems
• Confirmed Compatible Vehicles: • Chevrolet Silverado 2019 and newer • GMC Sierra 2019 and newer • Chevrolet Malibu 2013-2020 • Cadillac Escalade 2015-2020
• GM9 firmware equipped vehicles
• Professional GM diagnostic equipment for system verification

Note: This harness is designed for specific GM SmartKey models only. Always verify your vehicle's SmartKey system and GM9 firmware compatibility before ordering.