Gas won't go into tank in aztek?

If gas won't go into the tank of a Pontiac Aztek, it could be due to a few issues. One common problem is a clogged or malfunctioning venting system, which prevents air from escaping the tank as it fills. Additionally, there may be an issue with the fuel filler neck or the fuel pump itself. It's best to have a mechanic inspect the vehicle to diagnose and resolve the problem.