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Diagnosing Envoy Low Oil Pressure - Part 2    • Diagnosing Envoy Low Oil Pressure - P...  

Diagnosing Envoy/Trailblazer Low Oil Pressure (GM 4.2L). In this video I show how I changed the oil pressure switch on my 2004 GMC Envoy XLT to fix a low oil pressure problem. Oil pressure sensor replacement. Oil Pressure Low Stop Engine. Oil pressure gauge fluctuating. This is the same for the Chevy Trailblazer. My Envoy has the 4.2L I-6 engine with about 250,000 miles. GMC Envoy Problems
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Diagnosing Envoy Low Oil Pressure - Part 2
   • Diagnosing Envoy Low Oil Pressure - P...  
Diagnosing Envoy Low Oil Pressure Part 3
   • Diagnosing Envoy Low Oil Pressure Part 3  .

ACDelco D1843A GM Original Equipment Engine Oil Pressure Switch
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Oil Pressure Switch Socket
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