6L90 Transmission

Specifications

The GM Hydra-Matic 6L90 transmission is engineered for demanding performance and durability. This six-speed automatic transmission is designed for rear-wheel-drive and all-wheel-drive vehicles and can handle up to 531 lb-ft of maximum engine torque. With a wet weight of approximately 240–245 lbs. including the torque converter, it combines robust construction with practical packaging. The 6L90 features a durable die-cast aluminum case and an integrated 32-bit Transmission Control Module (TCM), providing sophisticated electronic shift management. It uses DEXRON-VI transmission fluid and is well suited for heavy-duty automotive, performance, and commercial applications where strength, smooth shifting, and reliable operation are essential.

Models Compatibility

Chevrolet Silverado

The GM 6L90 was used in select Chevrolet Silverado applications, particularly heavy-duty 2500HD and 3500HD models. Its high torque capacity and durable construction make it well suited for towing, hauling, and demanding work applications.

GMC Sierra

The 6L90 was also available in select GMC Sierra models, including certain 2500HD and 3500HD configurations. The transmission provides the strength and electronic control needed for high-torque engines, heavy loads, and frequent towing.

Chevrolet Corvette

Select high-performance Chevrolet Corvette applications have been equipped with the 6L90 automatic transmission. Its robust design and six-speed gearing provide a balance of performance, durability, and smooth power delivery for demanding driving conditions.

Chevrolet Camaro

The 6L90 has been used in select high-performance Chevrolet Camaro variants, including certain V8-powered applications. Its heavy-duty construction and high torque-handling capability make it suitable for performance-oriented driving and high-output engines.

Frequently Asked Questions