GM 6L45/6L50/6L80
Interchange Part Number: 45420B
The TEHCM (Transmission Electro-Hydraulic Control Module) for GM 6L45, 6L50, 6L80, and 6L90 transmissions (specifically Gen 2 units typically produced from 2011/2012–2020) fits a wide range of rear-wheel-drive and all-wheel-drive General Motors, Cadillac, and select other vehicles. This module combines the TCM, solenoids, and pressure switches into one unit.
Key Vehicle Applications (2012–2020 Range):
- Cadillac: ATS (2012–2015), CTS (2012–2015), Escalade/ESV/EXT (2012–2014), STS (2010-2011), SRX (2010-2011)
- Chevrolet: Camaro (2010–2015), Caprice (2011–2017), Colorado (2015–2020), Corvette (2011–2014), Express 2500/3500/4500 (2010–2020), Silverado 1500/2500/3500 (2011–2020), Suburban (2011–2020), Tahoe (2011–2020), Avalanche (2009–2013)
- GMC: Canyon (2015–2020), Savana 2500/3500/4500 (2010–2020), Sierra 1500/2500/3500 (2011–2020), Yukon/Yukon XL (2011–2020), Yukon Denali (2007–2015)
- Hummer: H2 (2008–2009)
- Pontiac: G8 (2008–2009)
- Isuzu: Commercial trucks (2012–2016)
Important Technical Details:
- Generation: The 2012–2020 timeframe generally corresponds to Gen 2 TEHCMs (often referencing part numbers like 24256939, 24275873, etc.), which differ from the earlier 2007–2009 units.
- Programming: These units must be programmed (flashed) to the specific vehicle’s VIN using a J2534 device.
- Usage: They are utilized across the 6-speed lineup, including the lighter-duty 6L45/50 and heavy-duty 6L80/90.
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