esfd243
East Syracuse, NY
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I have a 2012 D/A Silverado with about 3200 miles. I have noticed the last day or 2 that the idle was running at around 800 rpm when normal seemed around 600. Now after a day or so it seems to be back to normal. Is this an exhaust burn off? I drive fire trucks for a Volunteer company in the area I live and the new trucks have and exhaust regeneration. Once it kicks on it takes a while for it to shut off. Any ideas?
Mike, Dawn & Mallori
2011 Keystone Cougar 324RLB (1st 5th wheel)
2012 Chevy 2500 HD D/A 3.73
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Salty Dog
Upstate NY
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Yep - the DPF is in regeneration mode. Sometimes the compass in the dash will be goofy at this same time...
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REWahoo
Texas Hill Country
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During a regen your idle speed will bump up from the normal 600 RPM to 850. Also, as Salty Dog said, your compass will stop working. Regens usually take about 30 minutes to complete at highway speed - longer in stop & go situations or if you shut the engine off before the regen completes.
2011 Silverado 2500HD LTZ Duramax 4x4
2007 Jayco Eagle 291RLTS
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greende
Syracuse,NY
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All of the above X2.
2011 Chevy 3500 HD LTZ Duramax/Allison Crew Cab Long Box DRW
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ScottG
Bothell Wa.
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Why does the compass go wonky?
Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
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dmax_83
SE WIsconsin
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Like others have said you are experiencing a regen cycle. In addition to the non functional compass and higher rpm's, the engine will also sound different during acceleration if you listen carefully. I also have an Edge Insight CS Monitor to indicate when mine is in regen, amongst many other engine parameters.
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gmcsmoke
Butler
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Regen. Just doing my part to an already answered question. Hopefully we get 3 pages of the same answer.
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Wingnusa
Scott and Brenda Retired and Wingn the USA
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X50
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dmax_83
SE WIsconsin
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ScottG wrote:Why does the compass go wonky?
Nobody can seem to answer that question. I'm not sure if the '12 models do it too, maybe someone with one can chime in.
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Paul Clancy
BC Canada
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I'm in - exhaust regeneration cycle. A burnt rubber smell from exhaust is another sign it's happening.
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