I went to put window cleaner in my truck and the latch inside wouldn't work.
How do you get under the hood if the latch won't release from inside?

 

Start off gentle, and push down on the front of the hood right by the latch. Also try lifting up as far as possible on the hood then going and pulling inside release.

If that doesn't work...try a bit more 'finesse'. Mine would release with a well placed pound on the drivers side hinge-ish area of the hood. Once you get the hood up, spray a WHOLLEEE lot of wd-40 or some other cleaner all over the latch mechanism to clean it out and grease it up.

Shouldn't have any problems after that!

 

Does the latch release handlemove when you pull on it...or move without much resistance? Might be a frozen or broken release cable.