general problems of the 2004 GMC Canyon

Reference recalls on report receipt date: Apr 27, 2006 NHTSA campaign number: 06v139000 component(s): exterior lighting report receipt date: Jul 29, 2009 NHTSA campaign number: 09v310000 component(s): exterior lighting my 2004 GMC Canyon break light went out on me on 8/8/2013. The break light out was a safety concern for tailgaters. So I took to mark christopher GMC dealer, ontario CA for repair because of two same recalls on the vehicle plus transmission oil change. Orginal estimation of cost was 305. The dealer decided to charge me 155 for transmission oil change and labor, $16. 75 for a defective/malfunction brake switch and $200 on labor. They told me the recalls was done already on the vehicle and there is no warranty on the second attempt. The final estimation of cost was $377. I don't recall the date that it was serviced. How can GMC assures that the vehicle recalls was done properly? I'm very disappointed with GMC and it recalls. I felt like I got rip off by the dealer. Beside, I don't know if they ever change my transmission oil filter and casket along with the transmission oil change.