Vanguard BIG BLOCK M540000, Repair Manual, Page: 62 / 168

9. Remove the 2 fasteners securing the fuel pump module
support bracket to the valley air guides ( A , Figure 63).
Set mounting bracket aside.
63
Engine Control Module (ECM) - EFI
Some engines may have an ECM that is mounted externally
to the engine.
1. Remove the 2 fasteners (
A , Figure 64) and wire harness
ground wire ( B ) that secure the ECM to the support
bracket.
2. Remove the J1 (GRAY) ( C ) and J2 (BLACK) ( D ) harness
connectors from the ECM by depressing the connector
tab and pulling away from the ECM.
NOTE: Take note of the location of the J1 and J2 ECM
connectors to maintain correct orientation during reassembly.
64
3. Remove ECM from engine and set aside.
63