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Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

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Old 06-04-2011, 04:49 PM
CF Beginner
Join Date: Jun 2011
Posts: 1
Default 2005 Suburban P0178 code but iys not a flex fuel vehicle

My 2005 suburban has an engine light due to error codes P0178 and P0179. The trouble is that all the information I can find states this is for a fuel composition sensor on flex fuel vehicles - but my vehicle is not flex fuel? I also learned they were installed only on 2000-2002 vehicles while mine is a 2005. Any help is greatly appreciated.

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Old 06-04-2011, 10:46 PM
73shark's Avatar
Join Date: Apr 2006
Location: KC, MO area
Posts: 8,457

Welcome to the forum.

My wife's 2004 has the L59 Flex Fuel option. Might check your list. I think it's in the glovebox. Or you can go here.
2010 Sheer Silver Tahoe LTZ (all options but sunroof, power boards), GM (body color flaps, rear console, 3rd row mat, 2-Way Remote, chrome gas door, Esky rack), Eagle Eye LED tails, SLP dual tip exhaust, Silver bow-ties/rear wiper, Catch-All mats, AlphaTherm washer fluid heater, Putco chrome mirror covers, silver calipers, board chrome trim, tint, GMPP Major Guard

2007 Black Tahoe LTZ (Sold),
(GM flaps-$15, Lund Step Tubes-$80-For Sale)
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Old 06-04-2011, 10:46 PM

05, 2005, chevy, code, codes, engine, error, flex, flexible, fuel, light, p0178, sensor, suburban, trouble

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