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  1. bsmall2800

    OBDII "Not Ready" for SMOG TEST

    After 3400 miles of driving and completing the drive cycle still "Not Ready" shows up when the Smog Station plugs in the OBD monitor. This is so frustrating for a 4 year old vehicle. The Chev dealership says another Duramax came in with the same issue and the technician plugged all his...
  2. bsmall2800

    OBDII "Not Ready" for SMOG TEST

    I will try that procedure to see if it will clear the Not Ready when they do the Smog Check again. Thanks so much for your help.
  3. bsmall2800

    OBDII "Not Ready" for SMOG TEST

    I have a 2020 GMC 3500 Duramax and went to get it smog check. The guy said that my OBDII is "NOT READY" . He asked if the batteries or any work done on the truck lately. No to both. He said drive it around for about 100 miles and hopefully things will reset and able to complete the Smog...
  4. bsmall2800

    2020 l5p duramax knock at idle cold, worse hot

    Well Capt. Wakencracker, did you ever get a reply from Gale Banks on the thumping/knocking noise?
  5. bsmall2800

    LMM: 245/75R-16's to 265/70R-17's on a 2008 GMC LMM

    I know this topic has been discussed in lengths in the past but here is the latest as of May/2014, at least from my prospective, and knowledge. I finally replaced my 245/75R16’s with 265/70R-17’s, which through off my shifting times with the Allison transmission, and the spedo no surprise...
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