2002 4.2 liter chevy trailblazer 4wd
when its cold i get the light for reduced engine power with the check engine light.Now i can let it warm up and then drive it but when its real cold it will happen while driving and i will lose power and have to shut it down and restart it to keep it going.I have taken it to have it checked all they do is tell me i have never seen that light before (DEALER AND LOCAL GARAGE) i did what they told me BY replacing plugs,boots,air filter,added fuel filter in line,mass air flow sensor,with all the same outcome. Now im taking it to another garage in the am 1/21 who has told me he has ran into this and he may be able to help. Of course i gave gm a call for help but they wont do anything for me because im not a service tech. All this has cost me about 1500-2000.
Please if you can send me some info i can take with me.
please understand my frustration is very high with this car and gm.
i have had it scanned and it says the same thing even after i replace what it says.