Help! ECM-B keeps popping

[91GMCSuburban]

what the hell!

I have replaced the fuel pump relay, had all wires checked for shorting, replaced a loose tilt steering column. I hit a bump on the street and pop!

What could I be missing? Could it be the fuel pump itself? Could it be the ECM? I'm grasping here, help

 

[k20]

could be the pump. I had a pump lockup and it kept blowing it.

 

[91GMCSuburban]

Yeah, but it could do it cold or hot. Its when I hit a major bump.

 

[wildbilzrydn]

Sounds like the power to the fuel pump is grounding out when you hit the bump. Check for wires rubbing sharp edges and such.

 

[91GMCSuburban]

Although I had someone check this out, I will check again.

If any other ideas, let me know.