Other Fuel System Pump problems of the 2012 Chevrolet Impala

While driving on the highway the check engine light & traction light came on at the same time as these 3 messages, engine may loose power, severice traction control, stabilitrack. The engine started slowing down & had a high pitched whinny noise. After about 10 miles the message changed to engine iis loosing power, wouldn't go over 35 mph and the whinning became louder and faster. I had to have it towed to a gm dealership, where they diagnosed it as the high pressure fuel pump. I was told the parts are on back order until may 15, 2018.

I was driving to work. My car started to lose speed. Until it came to a complete stop. I called for a tow truck, that towed my vehicle to a repair shop. After diagnosis of my car the repair guy, informed me it was my module fuel pump flow control. I wanted to know more so I google the problem. I came across a recall on gm site, bulletin 14515b. I noticed it was a recall for exactly the same issue I was having. So I called Chevrolet to see what steps I needed to take on getting reimbursed for an issue that clearly has been a problem on several 2012 Impala's. I was told,it was a recall but not on my 2012 because my VIN # begin with a w. I explain to her that didn't make sense to me. All 2012 was in production at the same time. I'm pretty sure they used the same part on the vehicle. I was told it was nothing she could do. I informed her I will be filing a complaint.

Car has 68,000 miles. A few days ago the engine light came on, which disabled remote start. I didn't realize this until I went to get into the car. I'm in mi and this past week has been very cold. I jumped in and drove it to work (less than 3 miles). On the way, the traction light came on. No surprise, as it was a little slippery. No other problems. On way home from work: car starts up fine, no warning lights at all at start. Its about out. Almost home: engine light comes on, traction light comes on, then right before turning on my road the stabilizer light comes on and reduce power light, car jerks and loses power like its going to stall out. It made it home. Next morning, engine light on but nothing else happens. I call around and dealership suggests I bring it in and hook it up to run a diagnostics for $98. I go over to parts store and have them run it first. Error codes show up that "don't really mean anything" and they reset the engine light. Runs a couple of days fine with no problems, lights coming on etc. Temp drops again and repeat the whole process all over. I bring to the dealership and they tell me it needs high pressure fuel pump and new lines, after they asked me if I ran e85 in it, which I do because that is what they suggested when I bought it! I can't afford the $900 right now and I picked it up. I called another dealership to get another estimate and I'm told that this is a common problem (we're seeing this all the time. It's a problem with running e85 in cold temps). That person suggests I run mao44 and prem unleaded in it and it should run fine for a while. I"m also told that this is not covered by the powertrain warranty and there has been no recall, even though "we're seeing this all the time".

The vehicle has a loud knocking sound from the high pressure fuel pump when you take off from a stop.