I have a 1999 Suburban it will turn over and not start, when I cut the key off and try again it will start. It always starts on the 2nd time. Please help me.

 

Welcome to the forum.

Check fuel pump pressure.

 

There is a check valve in the fuel pump assembly. When the check valve goes bad the fuel bleeds back into the tank so that there isn't any gas to start the engine. You can either replace the fuel pump or add a check valve in the fuel line. I did this last year and the fuel pump is still working.

 

Do you know where I can get a Check valve and installation instructions?

Thank you

 

I got mine on Ebay. Don't remember exactly from who. Make sure you get one rated for gas and you will need fuel hose for the connection. Make sure you get fuel injector rated fuel line. I put mine between the fuel filter and the tank.