Why did the steering & brakes fail on starting? on 2005 Chevrolet Silverado 2500 HD

On starting 2500 duramax 4x4, noticed loss of power steering & brakes. Ist time, when I opened power steeering fluid cap, some fluid spurted out. Put cap back, restarted engine, problem rectified. It has happened again, this time no fluid spurting out, but revved engine & problem rectified. Any advice as to why this is happening & what needs to be fixed/replaced?

by in Summerfield, FL on January 04, 2013
2 answers
ANSWER by on January 04, 2013
Your truck may have hydroboost power brakes. That system works from hydralic pressue from power steering pump. Likely it may have a belt tensioner that is worn or some reason belt slips when its cold. Inspect drive belt and tensioners for wear.
ANSWER by on January 04, 2013
MOST LIKELY BAD HYDRABOOST BEHIND MASTER CYL