6L80 Thermostat Bypass Kit for 6L80 6L90 8L90 Transmissions for GM Vehicles 2006 to 2023

Model	Year Range	Engine
Chevy Silverado 1500/2500/3500	2006-2023	4.8L, 5.3L, 6.0L, 6.2L V8
GMC Sierra 1500/2500/3500	2006-2023	4.8L, 5.3L, 6.0L, 6.2L V8
Chevy Tahoe/Suburban	2007-2023	5.3L, 6.0L, 6.2L V8
GMC Yukon/Yukon XL	2007-2023	5.3L, 6.0L, 6.2L V8
Chevy Camaro/Corvette	2008-2023	6.2L V8
Cadillac Escalade/Escalade ESV	2007-2023	6.2L V8

Product Overview

This transmission thermostat bypass kit replaces the factory thermal bypass valve to allow consistent, unrestricted coolant flow to your transmission cooling system. It is precision manufactured from durable materials to withstand extreme operating temperatures and harsh under-hood conditions for long-lasting reliable performance.

Common Faults & Replacement Symptoms

• Transmission overheating warning lights appearing during regular operation or towing
• Premature transmission fluid degradation and burnt fluid smells caused by high operating temperatures
• Stuck factory thermal bypass valve restricting coolant flow to the transmission cooler
• Slipping gears or delayed shifting caused by excessive transmission operating temperatures
• Reduced transmission lifespan caused by repeated overheating events

Ideal For

• DIY automotive enthusiasts looking to upgrade their transmission cooling system for improved reliability
• Owners of GM trucks and SUVs that regularly tow heavy loads or drive in high-temperature climates
• Professional automotive repair technicians looking for a high-quality replacement part for customer vehicles
• Performance vehicle owners looking to eliminate transmission overheating risks during spirited driving