Your power steering pump is belt driven by the engine. That's what gives you the power assist. The power brake system uses engine vacuum to provide the power assist for the brakes. So, if the engine stalls you lose the power steering assist because the pump stops pumping and you lose the power brake assist because the engine is no longer making any vacuum. Hope that helps! Jim
Lost power and than my brakes locked up and my steering wheel
2006 Pontiac Grand Prix Base
-
Maintenance & Repair
My reduce engine light come on Monday and I am trying to see what could it be it started after I hit a bump in the road
Pontiac Grand Prix
-
Maintenance & Repair
Its gets near 1000rpm and goes down and up when its sitting still
1999 Pontiac Grand Prix 4 Dr SE Sedan
-
Maintenance & Repair
my pontiac grand prix 2001 check engine light came on. i checked the codes and the coils came up. i tried testing the coils myself with a small vacuum hose and a light tester to see if i was getting...
2001 Pontiac Grand Prix SE
-
Maintenance & Repair
What could be causing my car to overheat? I have changed the water pump, the thermostat, and the radiator.
1995 Pontiac Grand Prix
-
Maintenance & Repair
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.