catalytic converter

  1. L

    2003 GMC Yukon XL 1500

    I am wondering if anybody has any suggestions for me. Here is the story... (a little back ground info, I don't know if this is important or not) In May of 2012, we were going on a little road trip. The car started hesitating quite a bit while on the interstate (going 76 mph). The check engine...
  2. N

    P1345 code and it's syptoms or effects

    I got a catalytic converter issue on my 1996 sierra 7.4 vortec with almost 300,000 miles. It has new lifters,rods,cam,sprockets,chain,oil pump,stater,crank chaft sensor,cam shaft sensor,disributor cap,plugs and wires etc. Not sure if it was caused by engine problem related to this code but I...