Another oil pressure question 2006 Chevy 6 liter gas

Asked by Sep 27, 2016 at 12:47 PM about the 2006 Chevrolet Silverado 2500HD LS 4dr Extended Cab 4WD LB

Question type: Maintenance & Repair

To start with my truck was bought new by my wife and I she drives it mostly
but not much , it only has 24,670 miles on it never been off road.
The oil pressure thing started the other day when she started it and told me
the chime was going off and the dash readout said low oil pressure and zero
on the gauge. While its running its not rattling or making other noise , now if
you hit the throttle and rev it to about 3500 rpms the oil pressure comes up to
normal 40 pounds and stays normal while I drive the truck. If I turn it off and
go into the store when I start it again its at 0 op till I rev it again then its
normal again. What do ya think guys , sending unit , screen/ filter under the
sending unit ???
Thanks , Gene

10 Answers

5,685

Check oil level first. If level is ok and u recently dis an oil change, check the oil pressure with a gauge to see if sending unit is going bad. Or just replace the oil sending unit if u don't want to go through the hassle of checking pressure

Oil level was down a half quart so I topped it off , oil and filter was changed a couple of months age and dash display says 80% oil life left. How about a screen or filter under the the sending unit ?

20,985

How's the oil level and the filter? (just have to ask.) Does this have an external oil cooler? You can unplug the oil pressure sending unit and temporarily install a mechanical oil pressure gauge, then you'll know for certain what the oil pressure really is. There is also a screen where the sending unit plugs in, so try cleaning that out as well. It's hard to believe such a low-mileage truck could have a bad oil pump or gunked up pick-up screen or tube, so hopefully for you it's just a bad sending unit reading.

the screen under the sending unit , how does it come out , what is recommended to use to remove it ? Thanks , Gene

Well I changed the sending unit today and that didn't help, still the same. didn't check the screen , couldn't even see it, couldn't even see the hole the sending unit came out of. Tore up my hands and arms trying to my hands back there.

5,685

There is no screen, u need to make sure the hole is cleared of any debrie that will prevent oil flow. If u can't access the hole, star it up and see if it shoots oil out just to confirm it's cleared and remember to check oil pressure with a gauge

Yesterday after I changed the sending unit I started the truck up and it did the same thing as before, the chime went off the display said low oil pressure and the gauge read 0 (no engine noise) . After I reved the engine to about 3500 RPMs the op gauge went to 45psi at idle the display went off and the chime turned off, everything was normal and I drove it around the neighborhood then came home and shut it off, then started it back up again and everything was good, I shut it off again and let it sit for about 10 minutes then started it up and there was the chime ,low oil pressure and 0 on the gauge again, then I rev it to 3500 RPM and everything is all normal again. Ant ideas ? Gene

5,685

Like I mentioned before, u need to check pressure with a manual gauge, the gage in the truck doesn't really read the actual pressure. Check it when it's cold and again when it's at operating temperature

When I check it with a mechanical gauge if I choose to leave the mechanical gauge mounted inside the truck and not use the stock electrical setup do I just leave it unpluged will that effect the dash readout and the chime bells ?

5,685

U can leave it but u'll get the alarm that ur getting now because it thinks the pressure is low. I wouldn't drive around with it, you just want to findout if the pressure is low or not

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 25,717 nationwide Silverado 2500HD listings starting at $2,500.

ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 270
View All

Related Models For Sale

Used GMC Sierra 2500HD
137 Great Deals out of 13,469 listings starting at $2,997
Used Ford F-250 Super Duty
395 Great Deals out of 45,058 listings starting at $2,000
Used Chevrolet Silverado 1500
2,287 Great Deals out of 155,182 listings starting at $1,395
Used Dodge Ram 2500
152 Great Deals out of 5,502 listings starting at $2,500
Used Chevrolet Silverado 3500HD
129 Great Deals out of 7,446 listings starting at $6,995
Used Ford F-150
2,693 Great Deals out of 211,512 listings starting at $1,000
Used Chevrolet Silverado 2500
10 Great Deals out of 317 listings starting at $3,995
Used GMC Sierra 1500
937 Great Deals out of 62,257 listings starting at $1,395
Used Ford F-350 Super Duty
416 Great Deals out of 27,090 listings starting at $2,999
Used Chevrolet Silverado Classic 2500HD
22 Great Deals out of 415 listings starting at $4,790
Used Chevrolet Silverado 1500HD
18 Great Deals out of 297 listings starting at $3,950
Used Toyota Tundra
584 Great Deals out of 30,718 listings starting at $2,637
Used GMC Sierra 3500HD
66 Great Deals out of 3,593 listings starting at $9,195
Used Chevrolet Silverado 3500
21 Great Deals out of 620 listings starting at $6,495

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
10,793 listings starting at $22,452
2016 Chevrolet Silverado 2500HD For Sale
19 Great Deals out of 4,403 listings starting at $23,523
2015 Chevrolet Silverado 2500HD For Sale
58 Great Deals out of 2,072 listings starting at $22,500
2014 Chevrolet Silverado 2500HD For Sale
17 Great Deals out of 584 listings starting at $16,995
2013 Chevrolet Silverado 2500HD For Sale
9 Great Deals out of 1,062 listings starting at $11,995