Incredible 2005 Trailblazer Check Engine Light Flashing References. First i would check your tail pipe to make sure there is no white smoke (steam) check for oil in your coolant or coolant in your oil. Take your time to avoid adding stress to the engine.

Wires plugs and coils will have to be checked. If that solves the problem, you got off easy. Web #1 · nov 17, 2010 hello everyone.