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P0495 Diagnostic Trouble Code Discussion for September 2011

Cooling Fan Speed High

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Trouble Ticket Help Requests for DTC P0495
Help Request Posted
2003 GMC Envoy XL SLT 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKET16S73
P0495: Cooling Fan Speed High. ... this one! This Envoy came in a few months ago complaining bout fuel milage. We did a complete tune up: plugs, boots, fuel filter, and cleaned the throttle plate. We also told him to run some Sea Foam in the fuel to help clean the injectors. He came back bo...
September 20, 2011