stabilitrak warning light , traction control warning light
service airbag ,brake service , service brake monitoring system
please tell what the reason for that
Really needs to be professionally scanned. Code reader at a parts store won't help much! Only way to have any idea where to start looking is the scan test.
Agree; The code reader will not read the brake control module, which it sounds like your major problem is. Just fixed one last week that had a bad steering centering sensor, that was showing the Yukon was making a hard right hand turn while the steering wheel was going straight. Replaced the sensor, and problem was fixed. Agree have it scanned with the proper tool to find the fix.