Thread 'NNBS POLY Susp Bushings - Put em Where They Belong'
https://www.tahoeyukonforum.com/threads/nnbs-poly-susp-bushings-put-em-where-they-belong.111086/
There's not much in poly suspension bushings for the 07-14 NNBS. It makes sense though because there's only a few key areas where they'd do more for the ride instead of muck it up with bump steer. Sway bars are the first to have aftermarket options. It's proven they don't wear and superior in performance, especially if exposed to petroleum products.
Energy shows they have a transmission mount for our 08 Yukon Denali. That's pretty much worthless unless they made a matched set for the motor too. Poly and (oem) rubber bushes don't feel good or work well together for very long.
Here's' an Alldata post to help diagnose if you've got issues that need tissues on your:
https://www.brakeandfrontend.com/gm-simple-steering-noise-fix/
• 2007-‘13 Cadillac Escalade
• 2007-‘13 Chevrolet Avalanche, Silverado, Tahoe
• 2007-‘13 GMC Sierra, Yukon
I wanted to create a parking place for poly bushings for the NNBS as they're developed. The one key product I was looking for, but wasn't available when I needed it was, a
poly steering rack bushing. They're susceptible to the usual bushing killers, heat, oil, coolant, p/s fluid and whatever is kicked up from the road.
A Dude here in SoCal came up with a fix for the venerable p/s bushing made of poly that's cut and slides in as a direct replacement. The two oem rubber bushing on the d/s aren't suitable for poly because they'd transmit too much road feel to the wheel. GM has not done it yet, but the solution would be to create a HD rubber bushing with more OEM material loaded into the same space.
Until GM or Dorman makes a set of HD power steering mounts for the driver side, Ricochet created a simple solution to keep those two bushes from destructing themselves. He added a steel bracket that takes up the void where there is no bushing material. This limits the deflection that the rack can make into the area where the oem GM bushing has no material.
Prior to my recent AC Delco reman rack replacement, I didn't know about this product. That same rack in the Denali is moaning. Despite being purged, burped and checked all other potential causes, it looks like I got a bad reman rack, or one that sat too long on the shelf. I may be installing this into the replacement rack if I can't figure out why its moaning.
I've put out a request for more info on the product and will keep everyone updated.
New Rack and pinion bushing kit. This bracket installs in minutes! We also include a heavy duty polyurethane extra wide bushing for the passenger side of the rack. Made in the USA by Ricochet Polyurethane Technologies.
www.ebay.com
