Thread: LT1 Engine stopped while running

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Yes, Your LT1 PCM does control your Fuel Pump and your ignition if it is wired to do so. Some PCM wiring does not while others do. I would suggest that you get ahold of a scan tool for OBD1 and scan your PCM while turning it over. You can likely get an indication of what is going on. It could be something as simple as a fuse (I have three that control the PCM) or a ground for the PCM let go. Since you don't get your Fuel Pump activated while the switch is on but prior to the switch in the start position, these are the most likely things that can happen on your LT1.
Jerome

Since the LT1 stopped last November I have replaced fuses, relays, ignition module, ignition coil, and distributor. The engine did NOT throw a code. I obtained a CPU from a donor vehicle. I was advised that I would need the chip from the ignition key of the donor vehicle. While swapping the CPU I noticed some green corrosion on one of the 128 wires on the CPU. I cut into the harness and found a section of wire that was discontinuous. I spliced a new piece of wire. The engine runs fine. One wire in 128 killed the entire engine. I find it interesting that I used my ignition key with a CPU from another car. I wonder if the anti theft chip really works. I have another GM vehicle that has an ignition key with a chip. I had a non chip key cut and it starts the car OK. Thanks for all the advise.