Where do you add Manual Transmission fluid to a GM truck?

The location of the manual transmission fluid fill point on a GM truck varies depending on the year, model, and specific transmission type. There isn't one single location.

You cannot rely on a single answer. You absolutely must consult your owner's manual. It will show you the exact location and procedure for your specific vehicle. Improperly adding transmission fluid can seriously damage your transmission.

The fill point might be:

* On the top of the transmission: This is common, often with a fill plug or dipstick.

* On the side of the transmission: Less common, but possible.

Attempting to find it without the manual is risky. Look for a plug with a fill hole or a dipstick tube on top or on the side of the transmission. However, do not attempt to add fluid unless you are certain of the location and procedure from your owner's manual.