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Old 11-09-2011, 05:42 PM   #1
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Default hydroboost problem?

i searched and couldnt find anything specifically explaining my issue so sorry if this has been covered. just finished swapping in a 6.0 in a new to me 99 2500 with hydroboost. engine now runs but my brake pedal is hard as a rock and i have no power steering. i have a steering cooler but all the lines to that and to the booster unit are not leaking. took off belt and the power steering pulley moves maybe 1/8" back and forth but not much at all. I have an abs light on. wondering if a failed brake booster would cause this issue? Thanks
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Old 11-09-2011, 10:10 PM   #2
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Unhook the line to the booster, and see if it spins then. If it doesn't it's probably the pump.
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Old 11-10-2011, 09:25 PM   #3
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bad power steering pump.
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Old 11-10-2011, 10:16 PM   #4
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You should be able to spin the power steering pump pulley easily by hand, if you cant, you have a bad pump...
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Old 11-10-2011, 10:34 PM   #5
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Quote:
Originally Posted by white95birdta View Post
i searched and couldnt find anything specifically explaining my issue so sorry if this has been covered. just finished swapping in a 6.0 in a new to me 99 2500 with hydroboost. engine now runs but my brake pedal is hard as a rock and i have no power steering. i have a steering cooler but all the lines to that and to the booster unit are not leaking. took off belt and the power steering pulley moves maybe 1/8" back and forth but not much at all. I have an abs light on. wondering if a failed brake booster would cause this issue? Thanks
Did you have the lines off when you did the swap??? The ABS code might also be a good indication of whats going on... Do have a scan tool that can read ABS codes???
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Old 11-10-2011, 10:34 PM
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2004, 2007, 2500hd, 60, boost, brakes, gm, hard, hydra, hydroboost, pedal, problem, problems, silverado, steering


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