1992 Buick Lesabre Dtc S 17 41 58 Course Mil On Idle Vibration Off On

Try this remove ECM fuse for 10 or more sec. start enguine drive do codes reset? also has Pass-Key been altered?

Ok will do, but 1 more question. Does removing the negative battery terminal, or even both do the same? I have removed negative/ and had to remove both negative and positive in the past, for repairs, and code are still there. As far as the pass key goes, not since i had it. Bought in april 2012, as is, and "MIL" was on, and not sure if passkey's been altered then. But, the glove compartment key can turn the electrical on for car, but will not allow cranking/start, as expected because it's not the "passkey", which brings me to believe that, the ignition portion of the anti-theft system works.(pass-key). But, I am not an expert like you guys, just my assumption. I am trainning. Also just wanted to add that since i use gas from chevron/exxon/shell, the car hasn't stalled, BUT still has the odd vibration at times.