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Re: 99 tahoe no power to fuel pump
ECM B fuse supplies power to the pump through the relay. The relay is controlled by the VCM. I'm not sure if you know that with the key in the "run" position and the engine not running that power to the pump only lasts about 2 seconds on the Gray wire. I think the security system only disables the injectors, but I'm not sure about the pump.
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57 Chevy 210
65 Olds 442 Convertible (Another one sold)
75 GMC Vandura 3/4 Ton
1999 K2500 Old Body Style Suburban (Gone but not forgotten)
05 Dodge Ram 3500/5.9 Cummins
2012 Toyota FJ Cruiser
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