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  1. M

    95 GMC , loss of power under load

    Could use some ideas what might be causing my 95 GMC 2500 4x4 to loss power ,miss, not accel, barely run over 10-15 mph until check engine light come on .Then truck will run fine. Pulls code 45 and 85. Truck runs fine with no load..but when I hook up trailer with small ford tractor on back... I...
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