I have a 91 Bonneville I have replaced every sensor possible and all relays. Yet I still have a no start condition.
Power steering pump busted and shorted out my o2 sensor. I cleaned the wire and the car started ran great. After a day or so it shorted out again. Ran the computer codes got a bad o2 sensor code and a bad tps code. I replaced the tps calibrated it and replaced the o2 sensor. The car still wouldn't start so I replaced all of the sensors. It still won't start I'm thinking maybe the shorted out o2 sensor fried the cars computer? Anyone with any experience with this have any ideas? If so I would greatly appreciate the help thanks for reading.

...why are you just throwing parts at it?
Changing "all the sensors" is a surefire way to empty your wallet in short order, with no tangible benefit.

So, we've got a crank, but no start

Do we have spark? Do we have fuel?

Fixed it o2 shorted out the ecm. Was a bad idea to throw parts at it.

How did you find out it shorted the ecm? Was there a blown fuse, or did it damage the computer? Also, what codes did it throw?

Glad you got it fixed!

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