Hi All,
First time hptune user. 2000 Chevy Malibu. It did not go well although I think I dodged a bullet.
I disconnected aftermarket radio before starting. Completed a read, saved file. Made some mods, saved new tune and tried to write. Said "erasing" for a bit, chimes dinged, then the dreaded "controller unlocked timed out". Car would cranks but would not fire up or start. I tried recycling the interface to no avail. I was really worried that I had brciked the car. I then disconnected battery and she started back up.
In retrospect I suspect the aftermarket remote starter is interfering. I do not want to chance bricking the vehicle by trying to update again and getting partway through a write process. Thus, seems like a bench harness might be the safer approach.
I see lots of V8 bench harnesses on ebay and Amazon. Is there somewhere I can purchase same for the 3.1L? If someone were willing to make one up and sell it to me, please PM.
Here is a V8 example. Not sure if they are compatible?
https://www.ebay.com/itm/15384470383...m=153844703831
Alternatively, plans or diagram for making one and sources for parts (I am guessing it needs a power supply of some sort as well).
I do not want to rip out the remote start system. If that does tap into an OBDC port or wire would it be as simple as disconnecting that or, does the evil of these remote start systems run much deeper.
Thanks in advance. I've done lots of mechanical work but this is a new realm for me.