1997 K1500 4x4 LS Conversion

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Originally Posted by tfi racing

I too have used Jeff's schematics and only the one PCM is needed,no issue with ditching the black box on my 98.The only problem I have is with the fuel gauge running backwards,I'm thinking the previous owner screwed up the in tank sender when he replaced the fuel pump before I bought it,too busy and lazy to drop the tank just yet.

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The fuel gauge portion of the calibration is different between the Distributored Vortec engine and the Gen3 engine. If you are running a Gen3 in your 98 and the fuel gauge part of the tune hasn't been addressed the gauge won't work right.

So Jeff, your saying the fuel gauge PWM frequency needs to be changed from what I see? Then the fuel gauge would work correctly? Sorry for jacking thread, just needed some clarification.