Recent content by apcrews

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    Underboost P0299 code and many tests run! Need help

    I recently purchased a 2013 Sonic RS 1.4t 6spd with about 82,000 miles. When I bought it it was broken - every code under the sun, but main symptom was screaming through the crank seal at idle/vacuum. I put a new GM valve cover on it, and did the Cruzekits PCV fix (the intake plunger was gone)...
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    LTFT maxing out at -30, no intake leaks, suggestions?

    So a bit of an update after testing - I have a backpressure gauge at my work (I work for a dealership, not Chevy) and there is <1psi backpressure at any RPM, so the cat is not clogged. After a few days of driving, my P0420 code has gone away and disappeared off the "permanent codes" list. I...
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    LTFT maxing out at -30, no intake leaks, suggestions?

    Hi, I have a 2013 Sonic RS 1.4T 6spd. I bought it with a bad intake manifold PCV and aftermarket valve cover that was causing crazy crankcase pressures and screaming through the front crank seal. When I first scanned it, it had P0420 (cat efficiency), P1101 (intake airflow system...
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    EVAP Purge Valve Replacement 2015 Chevy Sonic 1.4 Turbo Hatchback LTZ

    You technically should not have to pry the legs open on this part to get the line off. You push on the top of the white tab in the direction of the arrow, and when you do that, the nubs that the green arrows are pointing to spread apart the hooks at the end of the lock. While maintaining...
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