Pacific Performance Engineering Automatic Transmission Control Module

Pacific Performance Engineering Automatic Transmission Control Modules

Pacific Performance Engineering (PPE) has been a trusted name in diesel performance since 1985, and their approach to transmission control reflects the same engineering discipline that built their reputation. Rather than treating the transmission as an afterthought, PPE develops automatic transmission control components designed to work in concert with the increased power demands that modified and heavily loaded diesel trucks place on their drivetrains.

At the heart of PPE's transmission control lineup are their automatic transmission control modules — components engineered specifically to manage fluid behavior, thermal regulation, and operational parameters in high-performance and high-load environments. For diesel truck owners running platforms like the GM 6L80, 6L90, and 8L90 transmissions, or those with Allison 1000/2000-series units, the factory transmission control strategy is often calibrated for stock power levels and conservative duty cycles. PPE's components address this gap directly.

A key technology in PPE's transmission control offerings is their billet aluminum Thermal Bypass Valve — a precision-machined component that manages how and when transmission fluid is routed through the cooler circuit. By controlling fluid temperature more intelligently than the OEM bypass strategy, these valves help the transmission reach optimal operating temperature faster during cold starts while preventing overheating under sustained towing, hauling, or performance driving conditions. PPE offers thermal bypass valve solutions for GM and Mopar applications, making them a go-to option for owners of Chevrolet, GMC, and Ram diesel trucks.

What sets PPE apart in this category is their systems-level engineering philosophy. The brand is known for designing supporting hardware so that when power output increases or tuning is modified, the components managing cooling, fluid flow, and thermal load can keep pace. Their transmission control products are developed with precise tolerances and direct-fit engineering, meaning installation typically requires no fabrication or custom adapters — a critical advantage for truck owners who want reliable performance without extensive downtime.

• Billet aluminum construction for superior durability over plastic OEM components
• Application-specific fitment for GM 6L80, 6L90, 8L90, Allison 1000/2000, and Mopar platforms
• Thermal management precision to protect against both cold-start and overheating damage
• Direct-fit design for straightforward installation without custom fabrication
• Engineered to complement PPE's broader transmission upgrade ecosystem, including deep pans, coolers, and rebuild kits

Whether you're towing heavy loads, pushing higher horsepower figures through a tuned diesel, or simply looking to extend the service life of a hard-working automatic transmission, PPE's automatic transmission control components offer a measurable upgrade over factory specifications. Browse the full selection below, and explore the complete Pacific Performance Engineering brand catalog to find complementary drivetrain solutions for your build.