4.0

definitely annoying
Typical Repair Cost:
$20
Average Mileage:
113,000 miles
Total Complaints:
1 complaints

Most common solutions:

  1. replace oil presssure switch (1 reports)
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problem #1

Sep 072013

Trailblazer EXT LS 4.2L

  • Automatic transmission
  • 113,000 miles

My 2004 Chevy Trailblazer Ext oil pressure began to drop drastically when idling. The oil pressure would go from a normal level to almost zero and the vehicle would almost stall out. At first it only happened every now and then, but became more frequent. I read online and found out that a clogged oil pressure switch could be the problem so I replaced the oil pressure switch and never had a drop in oil pressure ever again.

- jtinker, Round Hill, VA, US