Originally Posted by
rsgs
Question: what does the power steering pump have to do with it (dummy question)?
GM diesels use the power steering pump to supply hydraulic pressure to the brake assist mechanism - "Hydroboost" - instead of vacuum like on most passenger vehicles. Look between the master cylinder and the firewall: instead of a large vacuum canister to assist with braking, you will see a smaller mechanism with hydraulic hoses running to it. This gives you your "power" brakes. If there is an issue with the power steering pump or hydroboost unit, it could result in you having to apply more pressure to the brake pedal to overcome the lack of brake assist.
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter