Low oil pressure / stop engine warning - Page 3 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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Old 08-13-2018, 06:48 AM
princej99 princej99 is offline
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2008 GMC Envoy SLE
Bordeaux Red Metallic 4.2L I6 4X4
Join Date: Jan 2018
Location: ont
Posts: 533
has this issue been identified?

as it only appears to be a problem with the 5.3 V*

what is the latest on this?
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Old 08-13-2018, 08:25 AM
Jdanyel73 Jdanyel73 is offline
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Join Date: Aug 2018
Posts: 2
It happened late last night. Has not been looked at yet. But it is the 5.3 engine
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Old 12-21-2018, 08:08 PM
HeartOfDorkness HeartOfDorkness is offline
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Join Date: Oct 2018
Posts: 1
Jdanyel73, what was the result of that?
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Old 02-24-2019, 10:39 PM
MMAFighter941 MMAFighter941 is offline
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Join Date: Jul 2018
Posts: 1
I had this when I got my Envoy 5.3l 2 weeks ago. I just replaced the oil pressure sensor and took out the filter under the sensor when I did an oil change. Haven't had the message return yet and it has been a week.
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Old 02-27-2019, 08:48 PM
astroracer astroracer is offline
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2008 GMC Envoy Denali
Carbon Black Metallic 5.3L V8 4X4
Join Date: Aug 2018
Location: Mid-Michigan
Posts: 75
There is a screen under the oil pressure sender that needs to be changed as well as the sender. Just went thru this with my '08. Scared the **** out of me to tell the truth! Replaced both parts, did an oil change and all is right with the world.
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Old 04-20-2019, 11:43 AM
blaqyukon's Avatar
blaqyukon blaqyukon is offline
Junior Member
2007 GMC Envoy Denali
Summit White 5.3L V8 4X4
Join Date: May 2017
Location: new york
Posts: 3
Low oil pressure @ cold starts

Zippy i have the same problem when my Vortec is cold the pressure drops until
I am warmed up @ 200 on the temp gauge, then the lol is fine.. so my first attack is the oil sender unit and here goes something I donít see people say they
Do when changing the oil pressure switch is the filter underneath the oil switch,
Itís a real a %^&* to get to but when you see how thin the screen is on this small filter you can see why maybe the oil is dropping, but if i had time iíd Put a pressure gauge in 2 areas to see. If the pressure is really dropping. Some type tap some place near the oil pump or down the line before it gets to the top of the block. Well Iíve been real busy working hard but one side wants to jump in
And do it the other side is saying hell no, no matter how those guys make to that job is, when i stand in front my truck is does not look like that, i wonder how the dealer suckers do it.. no disrespect to the good dealer machanicís..
But i am going to do the job soon..
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