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2008 Chevrolet Trailblazer - Page 7 Questions & Answers
Abs code PO411
That is not an ABS system code, it is a powertrain fault code.P0411 - Secondary Air Injection System Incorrect Flow Detected, most common cause is a failed electric motor in the air injection pump.The pump is under the hood.Other Possible causes- Faulty Vacuum hoses damaged - Air bypass solenoid harness is open or shorted - Air bypass solenoid circuit poor electrical connection - Air bypass solenoid leaking/blocked or stuck open/closed - Air diverter valve leaking/blocked or stuck open/closed
Chancing the oil filter
Drain the oil and unscrew it, screw new one on and refill oil and your done. Fill up the new filter with oil(not so much it'll overflow when u put it on) before reinstallation so u don't have a dry first start and rub a little oil on the new filter gasket(rubber part).
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