1998 Bonneville SE was running fine, cut off and would not start back up. Towed to shop and started like nothing was wrong, drove for 3 miles and cut off again. Fuel pump appears to be pumping up when ignition key is turned on. Friend of mine had a Tech ! and retrieved 2 codes:

P0 336 - 18 times reference signal circuit

P0 706 - transaxle range switch performance

Any help on what to replace to get my car started again.
Thanks,
Ed
1998 Bonneville SE
vin# 1G2HX52K6WH225452

Ed,

You are describing a pretty common crank sensor issue. I'd swap it out ($30 part) and check the wiring to it while in the neighborhood.

Thanks for the help, I did have this same sensor go out on my 1988 Bonneville years ago.I will replace and see if that fixes the problem.
Have a nice day!!!!
Ed

BTW the range switch is usually there was well because from time to time the engine will hiccup and restart. It sees a start in the wrong gear and tosses a range issue code.

My 97 drove me nuts on this one.

Not that hard to change the sensor. There'* a write up on it in the tech info area.

This is the second time this forum has come through and helped me out. Can I help out by becoming a paying member, and if so, what is the cost per year.

I'll chime in and verify the crankshaft sensor as the culprit. Same symptoms as on my '89 model- and that was the problem.