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02-26-2012, 07:50 PM
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Junior Member
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2006 Chevy TrailBlazer LS
Sand Beige Metallic 4.2L I6 4X4
Join Date: Feb 2012
Location: fairfield bay Ar
Posts: 3
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p0171 system too lean
What does the error code p0171 system too lean mean? How do we fix it? Its on a 2006 trailblazer
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02-27-2012, 07:26 PM
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Member
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2005 Chevy TrailBlazer LS
Summit White 4.2L I6 2WD
Join Date: Dec 2008
Location: Land of Lincoln
Posts: 222
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Quote:
Originally Posted by cherndoyn
What does the error code p0171 system too lean mean? How do we fix it? Its on a 2006 trailblazer
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could be bad gas, or a fuel injector
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02-27-2012, 07:28 PM
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TrailVoy Alumni
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2006 GMC Envoy SLE
Cranberry Red Metallic 4.2L I6 4X4
Join Date: Apr 2007
Location: Bellingham MA
Posts: 1,614
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Quote:
Originally Posted by cherndoyn
What does the error code p0171 system too lean mean? How do we fix it? Its on a 2006 trailblazer
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a dirty MAF , loose intake manifold bolts , or a bad o2 sensor
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Keith Northeast Chapter MA Rep K&N 63 Series, 6000k Hid lows and fogs, Magnaflow Cat -Back, 20's, G80
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02-27-2012, 08:34 PM
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Junior Member
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2006 Chevy TrailBlazer LS EXT
Silverstone Metallic 4.2L I6 4X4
Join Date: Jan 2012
Location: WV
Posts: 4
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I've got the same code popping up on my 2006 TB EXT. I was leaning towards an O2 sensor, but I'm going to try cleaning the MAF sensor and throttle body this weekend and see if that helps anything before I start throwing parts at it.
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02-27-2012, 10:13 PM
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Junior Member
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2006 Chevy TrailBlazer LS
Sand Beige Metallic 4.2L I6 4X4
Join Date: Feb 2012
Location: fairfield bay Ar
Posts: 3
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It happens on almost every tank of gas around three quarters of a tank stays on for around 60 miles or so and usually when I'm sitting somewhere idling. I have tried getting gas somewhere else too.
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07-25-2012, 07:38 PM
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Junior Member
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2003 GMC Envoy SLT XL
Sand Beige Metallic 4.2L I6 AWD
Join Date: Nov 2011
Location: New York, NY
Posts: 10
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I'm getting the same code...smh....I have replaced the o2 sensor, cleaned the TB, replaced the intake manifold gaskets did fuel injection cleaning and replaced the spark plugs and one coil.... Don't know what else to do....any advice is greatly appreciated.
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07-25-2012, 10:02 PM
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Junior Member
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2006 Chevy TrailBlazer LS
Sand Beige Metallic 4.2L I6 4X4
Join Date: Feb 2012
Location: fairfield bay Ar
Posts: 3
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I put in some sea foam and quit getting gas at Murphy's and it hasn't come back on since.
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07-25-2012, 10:40 PM
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Junior Member
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2003 GMC Envoy SLT XL
Sand Beige Metallic 4.2L I6 AWD
Join Date: Nov 2011
Location: New York, NY
Posts: 10
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Thanks for the info...i'm going to try it tomorrow and see...
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10-18-2012, 11:44 PM
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Junior Member
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2006 Chevy TrailBlazer LT
Silver Blue Metallic 4.2L I6 4X4
Join Date: Oct 2012
Location: Littleton,Co
Posts: 4
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P0171
Ive had this code pop up a few times but i have a scanner and turn it off by erasing the code and it wont turn on for a while but since the first time on acceleration there is a hissing noise kind of like if there was a hose unplugged or something but checked everything and it all looks good i did clean the throttle body and the mass air flow sensor and the hissing is still there its getting anoying not sure what to do next can someone give me some ideas or has this happened to anyone?
2006 Trailblazer LT 4.2
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01-05-2013, 04:25 AM
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Junior Member
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2006 Chevy TrailBlazer LT
Sandstone Metallic 4.2L I6 4X4
Join Date: Jan 2013
Location: Calexico, california
Posts: 2
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Any answers please I have the same problem on mine, I replaced o2 sensors front and back, I also replaced the maf sensor, I checked for any leaks, and everything seems to look normal. I do not know what to do I am really tired of this car since I bought the car I have been having this problem. Can you repeat what did you do with the foam and how did you do it please... 
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