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  1. Do downstream O2 sensors affect performance?

    Chevy Express Forum (GMC Savana)
    Howdy folks, I have a 2013 Express with a 4.3. I recently experienced a couple of episodes of stalling, and then rough running on restart. Both occurred when I put the van in reverse, to back up to a bay door. Had been running fine before then, and when I started back up and drove out in drive...
  2. Stabilitrak/Traction Control/Check Engine

    Chevy Silverado Forum (GMC Sierra)
    I know that there are hundreds maybe thousands of posts regarding this topic and I swear at this point I've read 80% of them if not all of them... still no solution. I recently purchased a 2007 Silverado 1500 5.3L Crew Purchased with the check engine light on and code p0335 (crankshaft...
  3. TBI 350 Intermittent rough idle/near stall taken out of gear SOLVED(kinda)

    GM Powertrain
    1991 K5 TBI 350 with SM465. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. It feels like a misfire. It will correct itself after about 5 seconds, can usually correct it a little quicker by revving. Less commonly, it will do this going...