SOURCE: 2000 GMC Sierra 4.3L no spark at the plugs...HELP!
no codes. most direct components changed.
computer. take it out or have the truck towed to the shop/dealer to test the computer.
SOURCE: what transmission will fit in an 89 gmc sierra?
if it has a 4.3 liter motor a 86 to a 97 if it has a 350 motor a 81 to a 96 will work hope this helps
SOURCE: Misfires 96 gmc sierra 5.0
I suggest you have the injectors tested by the dealer, the sludge buildup will not cause a miss fire. to clean the throttle body use carberator spray while holding the engine idle high.
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