This engineering information bulletin describes a possible leak in the 6Lx0 transmissions. If a leak is found with the pan or pan gasket assembly, the dealership is to contact two technical contacts at GM prior to any repair work being done. No alternative parts or procedures are listed. The customer must mention this condition and the dealership must validate the EI number prior to performing this service.#08-07-30-024: EI08183 - 6L50, 6L80, 6L90 RWD Leak From Transmission Oil Pan or Oil Pan Gasket (Engineering Information) - (May 19, 2008)


Subject: EI08183 - 6L50, 6L80, 6L90 RWD Leak from Transmission Oil Pan or Oil Pan Gasket (Engineering Information)


Models: 2008-2009 Cadillac CTS, Escalade, Escalade EXT, Escalade ESV, SRX, STS, XLR 2008-2009 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe 2008-2009 GMC Sierra, Yukon, Yukon Denali, Yukon XL 2008-2009 HUMMER H2 2008-2009 Pontiac G8 with 6L50, 6L80 or 6L90 Automatic Transmission (RPOs MYB, MYC or MYD)