ECM and BCM updates

[svtkidd23]

Yeah mine was rough till i got on it hard 1 time passing someone.. Now its butter.

I had this done yesterday. BCM was already updated, just had the AFM updated. I had read this thread prior to taking it in and when the truck was complete, I took it on the Interstate immediately. 1/4 Mile on ramp, I got on her pretty good, once on the highway, I did a few pedal to the floor blasts and all is well.

 

Mike

For some reason.. My old fx4 any time the computer was plugged in the tps throttle position sensor would not be calibrated..

So i found how besides doing wot run lol.

 

Key off foot to floor

key on still holding

key off 2x... Never starting it.

 

Fuel injection so is not pouring gas like a carb would

[Dallas Kiezik]

Took the truck in for the highway rpm surge ( random 100 to 200 rpm fluctuation), wanting to verify if it was the DFM or the TCC. There was an ECM update available for the 2020 Silverado that was installed and none for the TCM. Now they will be doing a transmission flush to try and cure the problem.