Got a used 05 burban recently noticed occasional hard brake pedal and a little whine in the power steering pump... topped off PS fluid and it got better. Recently took a steep windy dirt road down out of the mountains... lots of steering on switchbacks and heavy braking. Towards the bottom I noticed brakes were harder than normal and steering whined and brakes caused power steering pump to whine quite a lot... checked fluid when I got home and still full. Next day no noise under normal driving conditions. Did I overheat my PS fluid? Pump failing under high demand? Thanks
Chevrolet Q&AAsk Your Question
2005 Chevrolet Suburban 1500 Question: Hydroboost brake and steering problems on a 2005 suburban
get a pressure test on pump and hydra boost. poss either one could be going out
Answer #2jasong711 May 08, 2013, 10:39Rookie
Sounds like you hydrobooster is leaking. It is assisted by the power steering pump. See if the ps fluid is low. The hydrobooster usually leaks right where it bolts on to the master cylinder.
Replygar489, May 14, 2013, 19:03Rookie
No leaks to speak of thus far... replaced pump good so far