smokey_mountain
Full Access Member
- Joined
- Sep 22, 2019
- Posts
- 259
- Reaction score
- 115
I almost did the tune... but glad that independent shop explained to me the ECM module gets a mark every time it is flashed and GM knows how many flashes GM authorized, and if there are extra that they did not, they will send you packing on the warranty claim. It speaks to the integrity of this independent mechanic, he could have installed the mod an d charge me $350, but he did not, saying do not lose your warranty and give GM any excuses to deny expensive repair work.
That idle is really low, but normal, GM is forced to do this for emissions purposes. Get a BlackBear tune and forget about all this. The idle will be raised 50 rpms or so and the motor will stop that. Won't void your warranty and GM won't know it is there.