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  1. Classifieds
    Sad to say my 04 Envoy XL motor/trans went, being on Disability I had to get another vehicle. Bought these parts to get done and welp too late. All new in box. Located in Philadelphia PA 19135. Upper left Control Arm Dorman #520-143 $40 Oil Pressure Switch $15 4 Caliper set # L4805, L4804...
  2. OEM Issues
    So my dad's 2003 Envoy has been over heating for a while, but about 2 weeks ago the oil pressure gauge was going low, so he took it to a mechanic, who changed the oil pressure sensor, but when he did, the oil pressure dropped to 0 and stayed there. So he had him change it back, and it's still at...
  3. General
    Do I need to drain the oil in order to change the oil pressure switch? I'm thinking yes, but I want to make sure.
  4. OEM Issues
    I have a 2006 GMC Envoy Denali with 55k miles. Recently my oil pressure sensor bottoms out to 0. The stop engine warning comes on. Stopping and restarting the engine resets the gauge for about 5 miles. At stops the gauge will bottom out again. There is no noise or change in performance when the...
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