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Old December 8th, 2010, 08:29 AM   #1
95yukongt
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Does anyone have a list the the code for obd1. My 95 Yukon has code 54. It doesn't run bad but it drop 2mpg since it thew the code.
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Old December 8th, 2010, 10:40 AM   #2
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DTC 54 - Fuel Pump Relay Circuit (Low Voltage)

RESULTS OF INCORRECT FUEL PUMP RELAY OPERATION

* An inoperative fuel pump relay can result in long cranking times, particularly if the engine is cold. As a backup system to the fuel pump relay, the fuel pump is also turned "ON" by an oil pressure switch. The oil pressure switch will turn "ON" the fuel pump as soon as oil pressure reaches about 28 kPa (4 psi).
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Old December 8th, 2010, 03:02 PM   #3
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thank you.
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Old December 8th, 2010, 03:03 PM   #4
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I haven't delt with OBDI stuff in forever. I don't miss that shit especially with non-GM cars.
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Old December 8th, 2010, 09:08 PM   #5
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I don't mind obd1 because i can check the code without a scantool
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Old December 9th, 2010, 03:32 PM   #6
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No problem,and yes OBD1 sucks .
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