89 blazer not starting

[jixxerjello]

My 89 k5 350 tbi isn't starting, I've replaced the fuel relay switch, fuel filter and fuel pump. It just cranks but won't turn over. When I spray starting fluid in the throttle body it fires right up for a couple seconds. When I turn the key over I can't hear the fuel pump at all. Anyone got any suggestions? Any help would be great.

 

[berg76]

Check your ground at the fuel tank.

 

[jixxerjello]

Ok I'll do that. Why won't it start though when it's bypassed?