My 6.0 in my trailblazer, I'm staring to fill a misfire when setting cruise. I put my scanner on it and watched it on my way to work and it is #7 and sometimes #3. I'm going to put a set of AC plugs in it and thought about changing the coils. My thoughts....Do coils need changed a set at a time or can you replace just one and everything fine. Also anybody have and luck or can feel differences on aftermarket coils? Would like accel improve performance or do they have it pretty well figured out with the stock ones?
Info if needed: Mines a 01 cast engine in a 05 trailblazer. 6.0 shortblock 5.3 heads and intake.
Info if needed: Mines a 01 cast engine in a 05 trailblazer. 6.0 shortblock 5.3 heads and intake.
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