I HAVE A 2004 CHEVROLET TRAILBLAZER THE OIL PRESSURE GAUGE HAS STAYED AT 40 FOR YEARS. THIS PAST SATURDAY 6/15/13 IT BEGAN GOING UP TO 60 WHILE DRIVING AND 50 AT IDLE CAN ANYONE TELL WHAT'S THE CAUSE?

Asked by Jun 19, 2013 at 12:29 PM about the 2004 Chevrolet TrailBlazer LT 4WD

Question type: Maintenance & Repair

2004 CHEVROLET TRAILBLAZER OIL PRESSURE GAUGE HAS SAT AT 40 FOR
YEARS. SATURDAY 6/15/13 IT BEGAN GOING UP TO 60 WHILE DRIVING AND 50 AT
IDLE. CAN ANYONE TELL ME WHAT CAUSES THIS?AND HOW WORRIED SHOULD I
BE?

4 Answers

35,665

When was your oil last changed? That inline 6 cylinder could have some sludge buildup in it. 50-60 is normal, my dads 03 sierra is at 60 and so is my step moms 01 blazer.

7,365

Oil change time.

10

I'm having same issue. Did you ever figure out the issue? I just had my oil changed and it still does it.

35,665

Heavier oil which oil thickens the colder it is, bad sensor or wire to the sensor, sludge build-up

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