Home » Transmission Cooler Bypass Valve Kit for GM 6L80 6L90 8L80 8L90E

Transmission Cooler Bypass Valve Kit for GM 6L80 6L90 8L80 8L90E

SKU: 1005012086010230-TU-TP-1114-S
Color
€31,83
-37% €50,92 €31,83

Keep your GM 6L80, 6L90, 8L80, or 8L90E transmission running cool under heavy loads and stop premature wear before it starts. This Transmission Cooler Bypass Valve Kit replaces the factory unit to regulate fluid temperature precisely, automatically diverting fluid away from the external cooler during warm-up and routing full pressure through it once thermal thresholds are met. Designed as a direct bolt-on for dozens of Cadillac, Chevrolet, and General Motors platforms, it eliminates erratic shifting, overheating, and harsh downshifts caused by a sticking or failed original valve. Proper thermal management keeps friction materials intact and extends service intervals significantly.

Benefits & Practical Tips

  • Upgrade immediately if you experience delayed engagement or temperature spikes during towing, payload hauling, or stop-and-go traffic.
  • Clean mating surfaces thoroughly before installation and start bolts by hand to avoid cross-threading into the transmission housing.
  • Run the engine briefly in park after fitting to allow fresh ATF to pressurize the circuit, then verify smooth upshifts and cooled temperatures before highway driving.

Technical Specifications

  • Transmissions Compatible: GM 6L80, 6L90, 8L80, 8L90E
  • OE Reference Alignment: STL010
  • Installation Method: Direct bolt-on replacement without modification
  • Core Function: Hydraulic bypass regulation for precise ATF temperature control
  • Vehicle Coverage: Select 2006–2021 Cadillac Escalade, ATS, CT4, CT5, CT6, CTS, STS; Select 2007–2021 Chevrolet Avalanche, Camaro, Colorado, Express, Silverado, Suburban, Tahoe; Select 2007–2021 GMC Canyon, Sierra, Savana, Yukon

Package includes:1 x Cooler Flow Bypass Valve Kit Upgrade

Please verify your specific model year, engine displacement, and transmission code before ordering, as certain platform generations utilize different valve internal designs. Styling and casting revisions may occur, so newer or older iterations might ship interchangeably without prior notice. Professional installation is strongly advised to ensure proper seal seating and torque specification adherence.

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