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Two GM Turds Today
First turd was was a 99 Buick Regal 3.8 with a lean code 171. a year or two back I did intake gaskets and replaced the MAF sensor(Cardone Reman) and MAF connector pigtail. Not able to see or hear any obvious vacuum leaks today , I pinched off the vacuum booster hose and the Evap purge hose , smoke checked ,propane checked and brake cleaner checked intake manifold for leaks, No vacuum leaks confirmed. Pulled the EGR valve off and made sure no leaks past seat.Removed and Cleaned the one year old MAF sensor and reinstalled and saw a very brief decrease in fuel trims but after a few minutes they were too high again. Called The parts store got a replacement . Took before and after replacement photos of fuel trims.
2nd Turd was a 2005 AWD Chevy Equinox to do front brakes that has been FWD for the last 2 years since I replaced the broken LF half shaft , and removed the expensive prop shaft that had a failure of the rubber center damper support . When I did front brakes it felt like the caliper pistons were tough to retract, so cracking a bleeder made them easy to push in . Damn brake hose guide brackets doing a tourniquet on Amen
2nd Turd was a 2005 AWD Chevy Equinox to do front brakes that has been FWD for the last 2 years since I replaced the broken LF half shaft , and removed the expensive prop shaft that had a failure of the rubber center damper support . When I did front brakes it felt like the caliper pistons were tough to retract, so cracking a bleeder made them easy to push in . Damn brake hose guide brackets doing a tourniquet on Amen