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Thread: clearing monitors after resetting CEL

  1. #1
    Join Date
    Jun 2007
    Location
    saratoga springs ,new york {upstate ,adirondacks }
    Posts
    1,878

    clearing monitors after resetting CEL

    so i had to clear my codes to get an inspection.i had 4 monitors on ,after driving awile i only had 2 monitors left on ,evap and catalyst.i can get it to pass with one on.so my question is how do i get these last two to clear b4 the cel comes back on ?i did drive it till 2 went off but b4 another would clear the cel came back on .any suggestions.the drive cycle doesnt seem to work.i need this darn thing inspected.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

  2. #2
    Join Date
    Jan 2009
    Location
    michigan
    Posts
    43
    gonna have to fix whatever is throwing the code. that catalyst monitor can take up to 6 drive cycles to pass from my experience
    what is the code for?
    1986 rclb undergoing a 5.3 transplant

  3. #3
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    ya, those damn ready/state tests are a pita to figure out, you can follow the steps exactly and they still won't be "ready".
    like he said, get the code fixed and then keep driving the vehicle, it'll eventually set.

  4. #4
    Join Date
    Apr 2008
    Location
    newburgh, NY
    Posts
    512
    On hp tuners you set the dtc to report no error for those sensors and all the check will complete.
    Step 1. crus at it.
    Step 2. get a hammer.
    Step 3. torch it.

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