I want to tune-up my 98 Jimmy myself. 75K miles. I've read everyones
input on Delco vs Bosch plugs, buying a good cap, and buying good wires.
I will of course try to buy the best out of all of the suggestions.
My question is that nobody has mentioned the timing. I know the timing
light and manual adjustments are a thing of the past. Do I need to have
a computer check and\or change my settings after a parts tune-up? If so
I need suggestions. GMC wants $165 for plugs and I'm guessing timing.
Thanks in advance,
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