MISSES AFTER 70 on 1996 Chevrolet Suburban 1500

BLEW HEAD GASKET SO I HAD THE HEAD REDID,AS WELL AS NEW PLUGS,WIRES,BASIC TUNE UP.NOW I HAVE A SMALL BUCK/MISS ONLY WHEN I PASS 70MPH. IT DOESN'T HAVE A CODE!

by in San Antonio, TX on August 28, 2010
1 answer
ANSWER by on August 29, 2010
Sounds like a high rpm miss. Take note of the rpm when it starts missing. It could be a bad valve.
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A rebuilt transmission was put in last year. Also put on new tires. What is the most likely culprit? Out of balance tires? U Joints? Something else I'm missing? Thanks