Question about 1997 GMC Sonoma
I have trouble code P0401 gas recirculation flow
Code p0401 refers to exhaust gas recirculation(EGR) system-insufficient flow detected--- Causes ---hose leak/blockage, basic setting not carried out( if applicable)wiring--EGR valve/solenoid---ECM I would check the EGR valve solenoid first. Replace the faulty units with genuine one because most aftermarket units are not set for OEM cpu units and are not completely
Posted on May 11, 2013
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Posted on Jan 02, 2017
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