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getting codes p0172;p0175 on a 09 silverado on 2009 Chevrolet Silverado 1500

Im getting two codes p0172-p0175 on a 09 silverado ext cab eng. code 0. any ideas

Asked by for the 2009 Chevrolet Silverado 1500
Possible restricted air filter, maf sensor or circuit, fuel pressure regulator, injectors etc... Needs to be checked with a REAL scanner.
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Possible restricted air filter, maf sensor or circuit, fuel pressure regulator, injectors etc... Needs to be checked with a REAL scanner.