Umm, not to sound rude or anything, but do you have a shop manual for your truck? while asking for advise here is great, and you can pick up solutions and procedures from the experts here, nothing beats having a dealer grace shop manual at your side when working on really, any vehicle. Check out some of the suppliers, like
American Classic .
Shop manuals usually run about $35. An assembly manual, which was used in the plants to show the correct assembly procedures, comes in handy as well.
As to the lever problem, I would venture to say that something is amiss with the cam mechanism, rather than the switch. The cam is what holds the lever in place. It may be worn out or have a broken spring.
