How do I check my 2009 HHR OBC for error codes
Purchase a good OBD2 scanner, one that has freeze frames and live data capability, then just follow the directions in the box. Or if you don't want to buy a scanner just go to someplace like autozone that can plug in for free and give you the trouble codes, it's simple really, but you do need a scanner.
Most auto parts stores will also loan you an OBD2 scanner for use right outside their store
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