This bulletin applies to 2009-2012 Cadillac CTS-V series vehicles equipped with the Tremec 6-speed manual transmission. Some cases have been found where the clutch hydraulic system was contaminated with water.
Higher than expected levels of water in the clutch fluid greater than 2% may cause the clutch fluid to boil, likely losing clutch pedal feel and performance.
The clutch fluid level inspection should be a visual inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. Open containers of DOT 4 clutch fluid have a two-week shelf life. Do not use fluid if the container opening date is unknown or older than two weeks. Do not mix or re-use old fluid.
To provide the best clutch operation, it is recommended to change the clutch fluid every 2 years or 30,000 miles, whichever comes first. Flush and fill with fluid P/N 88958860 or equivalent DOT 4 fluid.