Question

95 buick lesabre shuts down sporadically. Tripped 2 codes:P0567 and P0629. Any suggestions?

Not sure where to start. I just bought this car from a woman and she only told me that it was shutting down once in a while and she had someone look at it. She said the mechanic put a crank sensor in it and that he could not find any trouble codes. Once I got the car home, I hooked up my scan tool and found these two codes.

Answer 1

Those codes dont show in the service manual, how did you get the codes? OBD reader or manually? 

I would check it manually 

EXAMPLE:

CODE 12: one long flash and two short flashes

CODE 13: one long flash and 3 short flashes.