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sluggish envoy

  1. Trouble Troubleshooting

    OEM Issues
    Long time viewer, first time posting: 2002 GMC Envoy 4x4 w/150k is lacking acceleration... very sluggish in park and when driving. Computer shows it is trimming fuel but no codes. Replaced the fuel filter, oil filter, air filter, spark plugs... no improvement. Replaced the pressure sensor...
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