Jump to content

2000 gmc 6.0L power steering pump quits

chute450

By chute450
in Ask A GM Technician

Recommended Posts

chute450 New Member

chute450

Posted
Posted

i've put 3 pumps on my truck they work fine without a hitch but as soon as my truck hits the rev limiter the pumps goes and i cant steer and i have no brakes?

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted

Are you re-using the pump pulley, or does new pump come with new pulley? I would imagine a quick cheap fix(other than not running up to rev limiter) is to stick a larger pulley on it to slow the pump down.

 

I have no idea what pulley to use, maybe someone else has some idea as to what pulley to try. After the pump fails, does it fail completely, and require replacement, or does it start to work again after the air gets settled out?

chute450 New Member

chute450

Posted
  • Author
Posted

after it fails my brakes immediatly go to the the floor and its arm strong steering from then on out.. the pump dosent wine or make any different noises it stays quiet and even if i rev it. it makes no difference

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted

The hydraboost should not cause the loss of brakes if it is not getting any hydraulic pressure from the power steering pump. The brake pedal should just be very hard to press. If you are getting the brake pedal going to the floor with no braking happening, you need to look elsewhere for the issue, it will not be the power steering pump.

 

Have you checked the fluid level in the power steering reservoir after the pump fails to work? Are you seeing any signs of a leak in the power steering system?

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted

Good luck with that. There is no connection between the two hydraulic systems, beyond the mechanical connection of the push rod between the booster and the master cylinder, and the mounting hardware.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • TrueBlue
      Transmission Temperature Hitting 220s

      By TrueBlue · Posted

      Thanks, so being a different beast altogether, anyone know what the "optimal" temp is for the 10L80/90 for proper shifting?
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      How many years have I pointed out every point in that link to the folks here and been avalanched with criticisms and outright hostilities at times? I ran counter to even the great CUSTOMBOSS and Lake Speed Jr and the half dozen experts on YouTube and in the final.....GM, Physics (Stribeck) backs that Grumpy old Bear.    Honestly, I never said a thing engineering hadn't studied silly and laid in concrete during WWII. But I'm old, the information is old and yet, the Laws of Physics are eternal.    Okay there is one exception. I vehemently disagree with their use of the word 'tolerances' when what it meant is "clearance".   The clearance is the distance between two objects. The tolerance is the degree of acceptable variation permitted in that clearance. I.E., piston to bore clearance is 0.004" with a tolerance of +/- .0002" so the clearance is in specification if it lies between 0.0038" and 0.0042". Cutting that 'tolerance in half has ZERO impact on lubrication requirements. Makes for more difficulty in manufacturing.  But a tighter clearance 'MAY'. Depends on finish. Anyway....   It's one of those statements made by people to make themselves look smarter than they are to convince people who are as un-enlighten as they seem to manipulate their behaviors. But hey, the blind leading the blind puts them both in the pit. 
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Out and about yesterday on a long Saturday drive I passed a lot of Shell stations. My preferred, so I pay attention. Lot's of small town Illinois so not six stations in three blocks like the city.    Everyone of them over a radius of say 100 miles had regular at $4.19 but one which was the one closest to home at $4.15. However Premium pricing varied greatly between 85 cents over regular to $1.50 over. I'm not counting the price of the station with the lowest regular so the reference is the same for the remainder and all within the same brand. However the spread discrepancy holds across all brands.     @txab, any thoughts on that? 
    • revrnd
      Future GMC Jimmy

      By revrnd · Posted

      What are your thoughts? The Chevy Blazer relaunch was an epic case of 'lunchbag letdown'. Jeep Wranglers and Ford Broncos stick out like a sore thumb.    The AI photos do not look like a 'retro version', but shrunken Tahoes. Get away from the 'futuristic look'. I've seen two concepts. One had rectangular headlight like a Rivian and the other way too big headlights (similar to a previous non-Wrangler SUV) should include dual round headlights like the early version.   If not this would look OK   At least it has GM styling (albeit the K2XX) A lot of the images floating around look like Bronco IIs or the current Bronco. Looking at the Broncos in my area (central Ontario, it seems to be a mix of 2 doors and 4 doors, 'mall rated' to ones that could go offroad.    I'm sure a AT4 and AT4X RPOs could be outfitted similar to a Rubicon if the braintrust understood the whole offroad scene. Crossing my fingers that if it does see the light that the front air dam/bumper doesn't extend below the center line of the tire...      
    • revrnd
      Silverado 4500-5500-6500 are they still being produced? Would have sold better as GMCs as well

      By revrnd · Posted

      I saw this news earlier this year:   https://theautowire.com/2026/06/12/gm-kills-off-chevys-biggest-silverado-trucks-as-sales-collapse-and-factory-fallout-spreads/

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...