
Re: Slow 02 response 2013 Silverado 5.3 4X4
Unplug the connector from the purge valve. Remove hose from purge valve. If it is grossly leaking you can put your finger on it and feel it. Or just put a vacuum gauge on it. You could also do purge/seal with a scan tool and watch the FTP parameter and see if ... Login to read more. ![]()
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