Recently noticed like the brakes are not released fully after the application resulting in a "flat tire feeling with noise" took the minivan for scheduled recall service. Per service person, they replaced the caps of brake master cylinder. Driving back home @ 70 miles, felt like the steering loosing control, stopped at the near by Chevrolet service center: They didn't felt any major issues with the steering but felt like the service wasn't done as they said. All the dust was evenly there all over the master cylinder: All over the bonnet. I feel no change with the friction noise from the brakes: " a little worse"" how do I ensure that a genuine service was done" now I feel insecure to drive on this, like driving on black ices. The electronic system was rest last time, but not it is back to not working good: Resulting with trouble with the A/C knob not working smoothly.

- Temple, TX, USA