Re: DOD/AFM issues
Posted: Fri Jun 02, 2017 7:18 pm
Interesting....
The worldwide owner-to-owner online support system for the Chevrolet Caprice PPV
https://www.newcaprice.com/forum/
bkwagonss wrote:I bought a Range Technology AFM disable device.
I have the Solo axle-back exhaust and the 4-cyl drone sounded like crap.
The device plugs into the diagnostic port so you don't have to get the ECU reprogrammed.
This is especially good if your car is still under warranty or you need to get the car inspected, just unplug it before you go in.
It works as advertised and puts a warm blue glow on the floor at night. LOL
Do you have that TSB #?BIG_GREEK wrote:So I did a little bit of research, found out about a TSB on the shuddering/vibration during AFM 4cyl activation that listed the L77. The tsb was dated 2015
Apparently, the torque converter clutch regulator valve spring breaks and causes the torque converter slip drop to zero when it isn't supposed to, causing the shudder.
Fix is a new lower valve body.