Originally Posted by
7two
Good info. I was thinking about switching to all aftermarket gauges anyway so this would be an easy fix. It states that the pcms tac signal wasn't strong enough, but I though the problem was that the pcm put out a different signal?
1991 Silverado-L33 5.3L, 212/218 .557 .562 115+4, ASP under drive pulley,180* thermostat, 90mm truck intake w/ LS3 throttle body. Shoenfeld conversion headers and duel Flowmaster exhaust. Performabuilt LVL 1 transmission and 23-2500 stall converter.
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