This trailblazer won't set a code I did find two speed sensors out of sync tried bleeding system with the scanner doesn't do it all the time but it sets the absence motor off at slow speeds or just before you stop this vehicle is very rusty underneath Than...

FIX posted 10/8/2020

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle