1996 GMC Jimmy Owner's Manual - Page 264

Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is changed. However, the fluid in your manual transmission doesn't require changing. Check the fluid level only when y ~ uengine is off, the t vehicle is parked on a level place and the transmission is cool enough for you to rest your fingers on the transmission case. Then, follow these steps: How to Check Because this operation can be a little difficult, you may choose to have this done at your GM dealer's Service Department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading. NOTICE: Too much or too little fluid can damage your transmission. Too much can mean that some of the fluid could comeout and fall on hot engine parts or exhaust system parts,starting a fire. Be sure to get an accurate reading if you check your transmission fluid. 1. Remove the filler plug. 2. Check that the lubricant level is up to the bottom of the filler plug hole. 3. If the fluid level is good, install the plug and be sure it is fully seated. If the fluid level is low, add more fluid as described in the next steps. 6-17