I am the semi proud 2nd owner of a Rendezvous Ultra, fully loaded, with only 155,000 miles on it. I got it for a great price last August (2018) from my sister. The body is near perfect, the interior is in great shape considering it hauled 2 kids around for 13 years. Since I bought it, it ran fine up until the beginning of May 2019. All of a sudden the check engine light started coming on. I've had the throttle body replaced, the idle adjusted, the ECM flashed, and had a refurbished one installed, but I still cannot get the check engine light to go away. When the refurbished ECM was installed last Monday, it ran fine all week, which was the longest it ran without the check engine light coming on...Friday evening..you guessed it...the light is back on. Now on top of all this, occasionally the loss of power light has come on. I'm out of ideas/options, and am ready to get rid of it...unless someone has an idea, or ideas...I've spent $3500.00 on repairs...I've about reached my limit. Any help would be welcome. Thanks, have a great night