Complete brake failure (brake pedal went to the floor) when exiting the freeway. Simultaneously, the check engine list, service ABS on led screen, and red brake light illuminated and warning chimes. No previous warning or indicator lights signaling a problem. Had serviced at dealership who indicated it was caused by failing hybrid battery. After being in for service for 52 days, I retrieved the vehicle with a new battery installed. One week later, we experienced another braking issue. This time while there was some braking ability the pedal was very stiff when pressure was applied and the brakes did not function properly (I.e. they did slow the vehicle eventually but did not stop the vehicle or slow it as it should have). Brought back in for service at a different dealer who states that the pbmv failed. How can this fail without any warning? shouldn't there be safety measures in place (I.e. the car should not even start if this is malfunctioning).

- Littleton, CO, USA

On the indicated date my wife and I were driving from dallas, tx to ann arbor, mi. My wife was driving and we were on I-44 approx. 20 miles South of rolla, mo. At highway speed we experienced sudden and repeated loss of electrical power and related power systems. This was evidenced by door locks repeatedly clicking on and off, navigation system failure, air conditioning failure, stabilitrack failure and lack of power steering. My wife was able to control the vehicle and after several calls to onstar and the use of our cell phones we were able to locate a dealer in rolla. We "?limped?? into the dealer after experiencing several more adverse failure incidents. The dealer checked out the vehicle and could not identify the cause through running his diagnostics. He concluded that the battery was defective and replaced it allowing us to continue our trip. Unfortunately this exact same issue recurred on June 21, 2014 while driving at highway speeds in the dallas, tx area and again, twice, driving at approx. 40 mph in frisco, tx on June 23, 2014. The local dealer serviced the vehicle on those dates and replaced the negative battery cable. During the past several weeks I have had numerous conversations with GM customer care seeking assurances that this was a known problem and that the latest ??fix?" was going to permanently correct this safety and reliability problem. Unfortunately, I have not been satisfied that this problem has been permanently fixed. I am concerned that we will have a re-occurrence of this problem in the future.

- Frisco, TX, USA

The contact owns a 2012 Cadillac Escalade. The contact stated that while driving in inclement weather at an unknown speed, the brakes were applied but the vehicle accelerated instead. The contact was unable to stop the vehicle and crashed into a tree. The contact did not sustain any injuries. The police were not contacted. The vehicle was later towed to a dealer where the brake sensors were replaced and the central computer was recalibrated. The manufacturer was contacted. The failure and current mileages were approximately 9,000. The VIN was unavailable.

- Euclid, OH, USA