99 Pontiac Grand Am SE V6 stalling?

[Kel79]

Ok, last week my car stalled up in the mountains. I knew that it was the fuel filter. The car would not start at all. Got the car off of the mountain and into the mechanic. He changed the fuel filter and it started right up.
It ran ok for a couple of days. It has is ok on short rides and runs fine. When it goes on rides on the highway and then has to slow down it wants to stall. After I pull the car over to the side of the road it starts up right away.
There is no check engine light.
Does anyone know what is going on?

 

[URI (from Canada)]

You need to take the car to an expert and have the fuel pressure checked. Since the service light is not on, it sounds like the fuel pump is ready to expire. It's not GM's fault the fuel pumps go bad, it is the lazy owner of the vehicle that refuses to change the filter and stresses the fuel pump. GM small car fuel pumps will not last long with a clogged fuel filter. I should know, I work on them everyday.