Manual Transmission FluidWhen to Check ManualTransmission FluidIt is not necessary to check the manual transmissionfluid level. A transmission fluid leak is the only reasonfor fluid loss. If a leak occurs, take the vehicle toyour GM dealer service department and have itrepaired as soon as possible.How to Check ManualTransmission FluidBecause this operation can be difficult, you may chooseto have this done at your GM dealer service department.If you do it yourself, be sure to follow all the instructionshere, or you could get a false reading.Notice: Too much or too little fluid can damageyour transmission. Too much can mean that someof the fluid could come out and fall on hot engineparts or exhaust system parts, starting a fire.Too little fluid could cause the transmission tooverheat. Be sure to get an accurate readingif you check your transmission fluid.Check the fluid level only when your engine is off, thevehicle is parked on a level place and the transmissionis cool enough for you to rest your fingers on thetransmission case.To check the fluid level, do the following:1. Remove the filler plug.2. Check that the lubricant level is up to the bottom ofthe filler plug hole.3. If the fluid level is good and your vehicle is a CTS,replace the gasket and reinstall the filler plug. If thefluid level is good and your vehicle is a CTS-V,apply LOCTITE ® #516 or equivalent sealant to thethreads and then reinstall the filler plug.With either vehicle, be sure the plug is fully seated.If the fluid level is low, add more fluid as describedin the next steps.5-24
