So far, ran through the ECU / Key / Security relearn procedure, and got the Malibu started up, ran it for about 10 minutes, as that was the time to die before, and ran a series of checks. No codes, no overheat, no power steering failure. So far so good.
FINALLY found the 3/4 NPT x 3/8" nylon barb fittings for my tank pickup and got it ordered. Sadly the cheapest way to do it was to buy a 6 pack... Oh well $6.00 but I didn't have to fish around Home Depot.
I WILL go to my local home center to buy 3/4" NPT plugs for the remaining tanks.
Road tested the car in my neighborhood, no issues. Came back home, retested alternator all is well. Road tested to Texas City, about 15 miles or so down the highway to get some ethanol free gas while I was at it... Noticed with the new ECU shifting is a little bit harsh, but not terrible. And getting about 3 coldes all related to the MAP sensor, which itself looks to be in bad shape, and fails several multimeter tests. Ordered MAP sensor.
Got my ethanol free gas @ $3.89/gallon. Certain more expensive than regular unleaded, but if it doesn't kill my generator or foul my stove I am fine with that...
I've got about a half gallon of ethanol free RUG left in my gas can from earlier in the summer that does have Sta-bil in it, but I need to use it, soon...
Probably be ready to go with the car mid week after the MAP sensor comes in and I manage to lay hands on a couple of quarts of Mercon VI. I really need this on a lift. I had so much engine oil under the car that I didn't notice any ATF leaks... It is possible I guess. Again could be due to the new ECM.
Anyway, one thing I am NOT seeing is the old evaporative emissions system codes that I never could clear. Possibly the ECM started failing there... Not sure. But it has not kicked back in yet.