GM-GMC: wiper motor, chevy truck, auto parts store

Question
i have a 74 chevy truck, the wipers don't always stay going, so if I'm changing the wiper motor how do i do it???

Answer
I don't believe I have ever replaced one on a 74 truck?!  I wasn't even born when that was built.  ha.  I searched around online and found a procedure for you.  Might help you, might not, hopefully it does.

To remove the wiper motor, first take off both wiper arms at the bottom where they attach to the truck. The attachment is a spline with a spring clip holding it on. You may need to go to an auto parts store, and buy the simple tool made for this purpose, they are not difficult to remove once the spring clip is released. At this point I use a small pry bar to "coax" the wiper arm off you should use a rag to protect your paint. Once you have the wiper arms off open the hood. at this point you will need a small socket & ratchet, the entire sheet metal plate that is between the hood & windshield will need to come off (right under where you took the wiper arms off). When you have this removed & out of the way you will be able to access the wiper transmission where it attaches to the motor, it's just one nut! When you have the transmission unhooked. Disc. the wiring plug from the motor along with the hoses for your washer. Unbolt it and your done! It may be a little stubborn separating it from the body there is some putty in there to seal out water.To install reverse procedure

Hope this helps you out.
If you get into it and have a specific problem with something, repost and I will try to help you out as best I can.