car will not stsrt sometime on 2003 Cadillac CTS

I got some gas ,and after thatit would not fire up sometime,could it be the gas?

Asked by for the 2003 Cadillac CTS
Mine did that...immediately following fueling it would have difficulty starting. Replaced evap solenoid at dealership.
2 more answers
It may or may not be the gas. If the engine is running well enough to drive your car just burn the fuel in your gas tank driving as you normally would. Refill the fuel tank with a name brand quality gas of the correct octane rating for your car. If the problem goes away with the new fuel then chances are that was the problem. If the starting problem is still present after refilling the tank then you may have an issue that needs to be looked at by a qualified service technician.
I had this same problem with my 03 cts but mine was the battery but it took a cuple weeks for it to compleatly die