07 Malibu Check Engine Code P0128 - Chevrolet Forum - Chevy Enthusiasts Forums

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Malibu Another long running GM name, the Malibu has overcome many changes to be one of the top mid size sedans heading into its eight generation.

Chevrolet Malibu
This area is for FWD models 1997 and newer
Platform: N-, Epsilon, Epsilon II.

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Old 08-24-2009, 11:37 AM
CF Beginner
Join Date: Aug 2009
Posts: 1
Default 07 Malibu Check Engine Code P0128

I have an 07 Chevrolet Malibu (v6, 3.5L). My check engine light came on and the code that is coming up is P0128 (Temp out of thermostat range...). My temperature gauge remains on "C" even when the car has been driven for a while.I also have no A/C it just blows warm air when the A/C is turned on. Is it my thermostat?
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Old 09-05-2009, 04:54 PM
CF Junior Member
Join Date: Feb 2008
Posts: 65

replace the thermostat for the code
GM Tech
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04, 06, 2009, 35, carlo, check, chevy, code, codes, engine, gm, light, malibu, monte, p0128, silverado, thermostat

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