my mom has a 99 blazr and we bought a new fuel pump and hooked it up right and everything. the relay under the hood in the fuse box is fine, all fuses are in great shape, and the fuse panel near drivers door has no blown fuses. we looked at a wiring diagram and it mentions a fuel pump ignition relay under the dash and on the column. is there a schiematic anywhere that shows were it is located? The wiring is correct the ground is fine the power line is fine. we are not getting power from the ignition to the pump. My dad was in there looking for it and may have bumped it to make a connection because every so often we can push the key in and turn it while pushing the ignition switch in and the pump will engage. we have talked to many folks and the only solution is the relays(the two under dash and column) are faulty. my email is bigdaveberg@gmail.com please help.

 

There is no fuel pump ignition relay. The fuel pump relay under the hood is controlled by the ignition switch itself which is in the steering column. I suspect this is the source of your problem. Can you get the vehicle to run by placing a jumper where the relay goes?

 

Check the fuse! I believe our trucks have 2 different fuses. I had teh same problem..