SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4
ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.
SOURCE: 01 Chevrolet S10 Blazer hesitates/misfires
If it is only doing this in overdrive lock up, tap the brake if it quits see a transmission man your torque converter might be bad
SOURCE: 98 chevy 1500 4.3L vortec misfire problem
These have a real problem with the distributor caps, i would try that
SOURCE: 1997 chevy truck running rough
Is this a 5.7? They are notorious for intake manifold gasket leaks. When mine did it, the diagnostics blamed it on an ignition misfire also! Replaced the gaskets and it runs smooth!
SOURCE: Need diagram for spark plug wiring for 1997 Chevy
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