Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
The Fuel Pump Relay is powered from the PCM DARK GREEN / WHITE wire & the Relay is Grounded Behind the instrument panel in the right side of the brake pedal bracket.So you should have Voltage + on PIN 85 & 87 with Key ON for apprx 3 secondsGround on PIN 86Voltage to the Fuel Pump on PIN 30Click Attachment BelowIF you do NOT have Voltage at PIN 85, with Key ON, you will need use of Dealer Scan Tool or Equal to Test the PCM & locate the source of why the Fuel Pump is not coming ON.
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