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Loss of power

Old March 22nd, 2008, 12:09 PM
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Default Loss of power

When accelerating fro 50 mph,ETC lite,Stabilitrak,check eng lites come on.Power is reduced.Stop.wait i min.Car runs OK,ck.engine stays on for 3 starts,then go away.This repeats every time I accelerate!!Had 2 techs check ETC system,all seems OK..HELP!!
Old March 22nd, 2008, 7:37 PM
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Default RE: Loss of power

year & model?
Old March 24th, 2008, 10:45 AM
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Default RE: Loss of power

2007 TrailBlazerSS
Old March 27th, 2008, 3:41 AM
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Default RE: Loss of power

could possibly be the o2 sensor going out. not sure but its a possiblity
Old March 27th, 2008, 5:57 PM
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Default RE: Loss of power

There's a rash of incidences lately of adulterated fuel. Are you sure you didn't get a tank of bad gas? Depending on how bad it is, it can ruin a catalytic converter enough to cause driveability problems at higher speeds while still allowing good idle/off idle operation. I had this happenwith the wife's '03 Envoy on which we just had the converter replaced. It only gave a couple pending codes for a malfunctioning O2 sensor, which I also replaced without curing the driveability issue. Hope this helps.
Old April 2nd, 2008, 3:12 AM
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Default RE: Loss of power

what are the codes????????????? 2007 not under warranty?????????
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