93 Bonneville SSE no start - code 42
It cranks OK, there are no sparks at all spark plugs, no sparks with a different spark plug at each lead, no sparks from the coils to ground. There seems to be fuel coming because there is the smell of gas in the cylinders when I removed the spark plugs. I can hear also hear the fuel pump shutting down when I stop cranking.
The check engine light is on, so I used the "diagnostic tool" I bought for that purpose, and it gives code 42, which the diagnostic manual says:
"Electronic Spark Timing (EST) circuit - open or shorted."
"Direct Ignition System (DIS) fault - open or shorted to ground during engine run."
"Fuel Cutoff Relay circuit - open or shorted to ground."
I also get "Bypass or Electronic Spark Timing (EST) circuit" in another manual.
I also checked all the relays under the hood and all the fuses and they are OK.
So I am tempted to think it is the ignition module, and I called a few places and they want CAN$468 for a new Delco or CAN$365 for an aftermarket one. I am thinking of getting a new one from ebay.
Is there anything else I should check?