There are no codes. Have had it checked with GM Tech II and everything checks OK. All sensors, injectors, fuel pressure and timing issues appear to be ok. While driving down the road I have a slight surging and thought that maybe this surging up and down while in park could somehow be causing the driving issue. Throttle body has been cleaned; 2 different maf but not a brand new one; monitored fuel pressure with gauge on windshield while driving; new IAC and TPS. Voltage and grounds have been checked
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Thursday, September 6th, 2012 AT 11:50 PM