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  1. #1

    Default 05 Suburban mileage

    My 05 Suburban with a 5.3 motor that has 72000 miles on it, recently started getting 15 mpg instead of the 18 to 20 mpg that it normally gets around town and I noticed that the oil pressure guage is pegged at 80. The truck seems to be running fine just getting bad mileage and the oil pressure has me conserned. Thanks in advance.

  2. #2
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    Are you getting the 15mpg per the DIC or actually filling the tank and checking the miles?? Since it sounds like either lost the sending unit for the motor, However you do have the recall year truck.. If you search the forum there is info about the reacall information. since your have a grounding problem with the oil pressure guage.
    When was the last time you did a fuel filter? or an Air filter since those can cause problems with milage.. also you are getting up there in miles so it might be time for plugs.
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3

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    Thanks. Just changed the oil (full sythentic), fuel filter is due next change as well as the air filter. I check the mileage by the numbers, not trusting the computer. I will deffinately do some checking on the forum. Thanks again.

  4. #4
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    Yep i had the same computer in my Silverado and it was consistently 1-2mpg off either way. So i actaully never knew my actual milage.
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

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