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  1. M

    Cooling issue

    I have a 09 Yukon 5.3L I had the inlet hose of the heater core break while driving down the road so all the coolant ran out and the engine ran hot but not pass about 240. So i replace hose refilled it still ran higher in temp so I put a new thermostat in that worked but it was still showing...
  2. M

    Preprogrammed ECU

    Has anybody ever tried a preprogrammed ecu? And was it a success?
  3. M

    Fuel pump

    So I diagnosed the fscm there is power to the plug if you jumper the wires on the plug for the Fscm the pump comes on so I purchased a Dorman preprogrammed Fscm and the pump still won’t come on. The code I’m getting is P0230 which is fuel pump circuit I have no idea where to go from here
  4. M

    Fuel pump

    So I diagnosed the fscm there is power to the plug if you jumper the wires on the plug for the Fscm the pump comes on so I purchased a Dorman preprogrammed Fscm and the pump still won’t come on. The code I’m getting is P0230 which is fuel pump circuit I have no idea where to go from here
  5. M

    Fuel pump

    K
  6. M

    Fuel pump

    Thank you guys im gonna try to diagnose the Fpcm today as soon as I get off..
  7. M

    Fuel pump

    I have a 09 Yukon 4.3L the fuel pump went out a couple days ago checked under the hood in the fuse box there is no fuel pump relay..I have had this truck for 4 yrs never had any problems out of it until now the alternator went out last week replaced it then now the fuel pump so I bought the pump...

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