Hi all, I Hydroboost swapped my 02 suburban about 4 months ago with all new ac delco OEM PS pump with the 1 ton pump and deleted the EVO, 1 ton cooler, 2011 duramax hydrobooster, brake pedal, hoses/lines, pulley, master cylinder, booster gasket and new 2013 tahoe PPV front calipers, also replaced the rear brake line. The entire system was bled properly and firm and would lock all the tires up. Now after a hard brake a few days ago the pedal is as soft as a vacuum pump and takes almost all the pedal to slow it down. Not close to how it was. The fluid is amsoil fully synthetic PS fluid and the ps/hydro was bled as well, there appears to be no issues. However, I recently noticed an air noise behind the steering wheel at idle and am wondering if the hydrobooster might be bad. Does anyone have experience with this? Sent from my iPhone using Tapatalk
A bad pinion bearing can definitely throw the yoke out of spec and take out the pinion and gears, happened to me and twisted the pumpkin like a pretzel with a trutrac sandwich. The structural integrity of the housing might be compromised from the force there is a special measurement tool for checking the runout and angles in the tubes, if you can't get it figured out you might want to just swap axles.
Definitely sounds like the sunshell. Thats common on the 60e. You’ll need a rebuild if thats the case. I upgraded to the beast sunshell but now theres an even better one, I can’t recall the name. Sent from my iPhone using Tapatalk
So on my nbs i swapped hydroboost and still have the vacuum brake hoses and the one is bad. I also swapped to the nnbs larger calipers. My hydrobooster is rated for 12,000 lbs and the escalade one is only 7,200 lbs so which brake hose can I run? Will the 3500 HD brake hose bolt into a 1/2 ton caliper? Sent from my iPhone using Tapatalk
I purchased 2013 tahoe ppv calipers and am shopping rotors and want to get powerstop towing rotors but for the PPV they don’t offer them, only for non police. Does anyone know if the rotors are same thickness, ect. The site says they are but it says its not compatible with the vehicle. Thanks. Sent from my iPhone using Tapatalk
I've owned a 1/2 ton for about 5 years now and i know 3/4th suburban owners. Every reason you should get the 3/4th ton is a heacache i've had with mine. The 8.65 rear end, the 60e, the weaker frame, front axle. The g80's in the 1/2 ton always blow. The 6.0 has an external oil cooler and hydroboost for brakes. The 2500 wheel bearings weigh almost 1.5 times as much as the 1/2 ton and are 4 bolt compared to the weak 3. The 2500's are easier to work on underneath as well because of the frame setup and suspension. The 6.0 mpg isn't too much worse. If you plan on keeping the truck i'd get the 2500. I sure wish i did. Today at work i actually looked up the wheel bearings to compare and look at the size difference.
It sounds like a wheel bearing but i have a similar issue with grinding except going straight and it can't be located. I replaced the wheel bearing assemblies twice with moog and timken, also had the front axle rebuilt, ring/ pinion, all bearings and its still making noises going on 4 years.
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