I have a 96 GMC Sierra with starting issues. Replaced battery, starter, plugs, distributor cap and rotor button. Even took it to our local Chevy dealer for a electrical diagnostic check and nothing came up. I can hook a jump box to it and it starts fine. But the next morning, all it will do is turn over. No start. Any ideas????

 

Will it start if you spray some starting fluid in the intake after setting all night?

 

I don't know. I'll have to wait till morning and try it.