i bought a truck from a used car dealership not even 2 weeks ago . they told me the were going to put good tires on it for me so they took it and brought it back with bad used tires on it and the lug nuts on the passenger side were so lose the tire was barely hanging on . the truck was running good but when they brought it back from getting tires the check engine light was on . we went and got that checked out , it ended up being the number 3 injector , we got it fixed for 140 . 00 . the truck is running better but the check engine light keeps going off and on . i get in the truck this morning and the service charging system message pops up . i don't know what to do and i feel like whats next , i mean it hasn't even been 2 weeks and we already have all these problems . i think they are screwing us bad . . .