I'm a 1999 Grand Prix GTP owner from the Misouri Bootheel. I'm having some isses with my engine dying at low speeds durng city driving. I have had the vehicle in the shop on numerous occasions but keep spending good money after bad and the problem is still not fixed. The engine always starts up right away but you just never know when it's going to happen. Looking for some assistance from anyone with the 3800 Series II engine who may have experienced a similar issue.