...the key I get no response. If I turn the key off and depress the clutch again the truck will start. A repair shop just replaced the clutch master and slave cylinders. They advised me that I needed a new starter. This problem didn't happen until they did the repair work. Does it sound like I need a starter or did they possibly break something when they did the repair?

bad clutch pedal switch

sounds more like the neutral safety switch and it depending one the price of the switch i would say less than $100 to fix and how does this shop know you need a starter??

I would bet a short maybe, loose wire causing your ignition problems. OR.....my car does that sometimes, auto tranny and shop told me it was the neutral safety switch. After moving the gear shift a few times it will "connect" and start.