AB90Z
Newbie
What is the quality of new parts? I changed one upper control arm bushing on a 90 Z-71 @ 280,000 with best stuff at part house along with everything else in the ft end except the rest of Ctrl arm bushings. At 320,000 miles the "NEW" control arm bushing was more worn out than the original bushing. So a 40,000 mile parts store part was more worn than a 320k mile original. Replaced everything in the ft end this time with ALL AC Delco & tightened steering box & now all is tight and well. My dad bought truck new & I have had it 12 years now.