1999 GMT-400 Escalade : Original Bosch pump finally paid the piper. Confirmed by jumping terminal pins 87 and 30 under the relay, dead pump. All in all took about 4 hours. really wish GM engineers would put an access panel under the rear seats HAHA. I didnt like the idea of crimp connectors on a critical component so I got my trusty solder iron out for the new Flat 4 style connector. Less than 160$, new Delphi pump installed and truck is up and running again. Word of caution, it's NOT fun to remove the tank on the ground...
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