I have replaced both O2 sensors, as well as the spark plugs, and wires on my 2005 Buick
Rendezvous with the 3.4L engine, and, although it seems to run better, it is still exhibiting similar symptoms ( stalling around a right, or left turn) I also checked the fuel regulator, and it is not leaking.
I have never had it on the scanner that you described, which might be what I need to do. We are working in my garage, with limited diagnosing equipment.
What about the other sensors
( crankshaft position sensor?- what might be the procedure for testing it??
Any other recommendations before I bring it to the dealer, or other more costly diagnosing shops?