Hey..just another person begging for help here =P
So, I've had my 2002 Impala 3.8L with 123,000 miles for about 3 years now, and recently a bunch of things have gone wrong, including but not limited to my catalytic converter and my radiator needing to be replaced. The car sat for a month or two in between repairs, and the battery died and I had to jump it to start it. (Both have been replaced now.)
Right after that, every time I start the car, the lights (interior lights as well as headlights and gauges) flicker rapidly, and then act normally, with an occasional flickering as I was driving or just parked with the car running. I replaced the battery, but it didn't change anything. (It was time anyway.)
Recently, however, my car has started stalling both while driving and while parked and running. It happens like this; the RPM gauge starts flickering up and down rapidly, while the engine is running normally. Then, it starts losing power, sort of struggles, and then dies. Like its starved for fuel or something. If I try to start it, it won't start unless I have my foot on the gas, and then it will only run until I take my foot off, and while its running it runs VERY rough. If I let the car sit for a few hours, it will start again (sometimes) and drive normally, until it stalls again.
Anyway, I brought it to a mechanic, and he said I would have to take it to a Chevrolet dealer to have my Body Control Module reprogrammed, and that should fix my problem.
I am kind of skeptical about this (I couldn't bring it to my regular mechanic, because he is located 50 miles away, and this guy kind of hurried me out the door after telling me that.) My question is, could these problems be fixed just by having my BCM reprogrammed?
There is no check engine light or any codes at all.
Sorry for the massive amount of text...hopefully someone will be able to help me with this.