+18 2008 Hummer H2 Check Engine Light Ideas. Web this free video provides the steps to diagnose and clear a check engine light on a 2009 hummer h2 6.2l v8 flexfuel sport utility. If the light persists, it could indicate a potential issue with the engine or emissions system.
The light turns on when you switch on the ignition key and then it turns off: Brake system warning light k. The best way to clear the check engine light is to pull the trouble code, identify and fix the issue and then drive your h2 around until the module that threw the code recognizes that the problem is fixed.
