Long story short. Had the flashing check engine lights. Codes showed #4 cyl. Mechanic replaced all lifters, spark plugs and #4 coil. Two weeks later, same engine flashing and code for #4 cyl. Mechanic said lifter was bad again and caused by camshaft. Replaced camshaft, on the way home engine lights start flashing again. Mechanic said to bring it back and he would see what it's doing. Any ideas?
In the past six months, I have replaced throttle body, spark plugs, coil, accelerator pedal, CAT, timing chain, etc.....still have flashing engine lights!!!
2007 Avalanche 5.3
In the past six months, I have replaced throttle body, spark plugs, coil, accelerator pedal, CAT, timing chain, etc.....still have flashing engine lights!!!
2007 Avalanche 5.3