The ECM B fuse on a 2000 GMC Sierra is located in the underhood fuse box. To access it, open the hood and locate the fuse box, which is typically located near the driver's side near the firewall. The fuse diagram on the cover of the fuse box will indicate the specific location of the ECM B fuse. It's usually a 10-amp fuse, so you can check its condition if you're experiencing issues with the engine control module.
In the fuse holder , look at you owners manual.
Fuel pump
PCM B fues in the underhood junction box
unplug your ECM B fuse that should shut it off
Remove 20 Amp fuse in the power distribution center located in cavity B.
The ECM B fuse in your 1989 S-10 may be blowing due to a short circuit in the wiring, a malfunctioning ECM (Engine Control Module), or a faulty sensor that is drawing too much current. Inspect the wiring harness for damage or frayed wires, and check for any components connected to the ECM that could be causing a short. Additionally, consider testing the ECM itself for faults. If the problem persists, it may be advisable to consult a professional mechanic for a thorough diagnosis.
Bravada
Buick Bravada Blazer
The 10 amp fuse marked "ECM B" located in the fuse box at the far end of the dash protects the fuel pump circuit. The drivers door must be open to gain access to the fuse box.
to find the location try going to www.autozone.com and check on vehicle specs.
Apparantly it was either installed wrong or there is something wrong with the replacement pump.