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Re: 2002 Chevy Express Hard Start
Posted to Technical Discussion Forum on 9/18/2017 6 Replies

[1998 GMC C1500 Sierra SL, Fuel Supply Waveform]

CH A pump blk ground wire, 240mv grd voltage drop, near the pump on start.

CH B grey power wire near the fuel pump cranking at 10.8v and 13.6v running.

CH C initial pump amp draw of 19.6A and pump spinnin... Login to read more.

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car Vehicle Data

1998 GMC Savana 1500 5.7L

Engine5.7 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

1998 GMC Savana 1500 5.7L

Engine5.7 L
Trans4-speed Automatic (Electronic)