Vehicle in limp mode shows no oil pressure that runs fine

Asked by Nov 22, 2016 at 08:49 AM about the 2007 Chevrolet Tahoe LS 4WD

Question type: General

2007 Tahoe 5.3 with about 240,000 miles
on it driving down the road vehicle
automatically went into her instantly went
into limp mode shut it off we started it
showed no oil pressure I'll chime in light
came on now have put a new oil pressure
sensor into it and it shows still no oil
pressure still in limp mode but runs
beautiful as far as sitting there and I don't
like any thoughts I've also put a new
Excelerator pedal positioning sensor in

9 Answers


If its showing no pressure you need to check the oil. If the oil is okay, remove the pan and check the oil pump. The same thing happened to me and my oil pump had fallen off


Check oil pressure with manual gauge, check when cold and see if pressure drops as it heats up to normal operating temperature, you may be due for a new engine at 240k miles


Oil sending light


My gauge is pegged at 80psi, sometimes when I hit a bump it'll drop to 0psi and my dash will chime low oil pressure then it'll go back to being pegged at 80. When the ignition is off its at 0 start it immediately go to 80.. ??????


These oil pressure issues with Chevy engines come up just about everyday on Car Gurus. I would install an aftermarket mechanical oil pressure gauge so I knew what the oil pressure really is.


Thanks F.O.R. I'm a newbie on this site so I didn't know this was an everyday question lol. Where is the oil sending unit?


Just replace oil sending unit. It's located on top of the engine block between intake manifold and firewall on driver's side. U'll need an 1 1/16" socket to remove it




Going to save you a lot of headach. 1) change to thicker oil and new oil filter. See if the helps. 2) since you are getting oil pressure when driving fast, it's not the oil pump. Change out the oils sending unit. See if this helps. 3) oil pan area. Change or clean out oil pick up screen. See if this helps. 4) check your oil guage cluster to see if it's working correctly. See if this helps. 5) here's the bad news of all else fails than it's your worn out cam bearings. Meaning engine rebuild. If you know somebody you can get it done cheap like I did or you can spend more than the price of your cars worth. That's all to it. I went through all of them and finally got it fixed. 2005 Tahoe with 200,000 miles on it.

Your Answer


Looking for a Used Tahoe in your area?

CarGurus has 41,240 nationwide Tahoe listings starting at $1,995.


Chevrolet Tahoe Experts

  • #1
    Tom Demyan
  • #2
  • #3
    John Carson
View All

Related Models For Sale

Used GMC Yukon
428 Great Deals out of 22,353 listings starting at $1,995
Used Chevrolet Suburban
387 Great Deals out of 22,601 listings starting at $1,999
Used Cadillac Escalade
240 Great Deals out of 11,984 listings starting at $2,500
Used Chevrolet Silverado 1500
2,217 Great Deals out of 167,673 listings starting at $1,000
Used Ford Expedition
347 Great Deals out of 18,226 listings starting at $1,989
Used Ford Explorer
873 Great Deals out of 67,246 listings starting at $1,295
Used Ford F-150
2,485 Great Deals out of 193,508 listings starting at $799
Used Toyota 4Runner
257 Great Deals out of 22,448 listings starting at $1,750
Used Dodge Durango
238 Great Deals out of 22,433 listings starting at $895
Used Jeep Grand Cherokee
838 Great Deals out of 70,342 listings starting at $700
Used GMC Yukon XL
214 Great Deals out of 14,254 listings starting at $2,450
Used GMC Acadia
929 Great Deals out of 50,728 listings starting at $3,284
Used GMC Sierra 1500
985 Great Deals out of 66,547 listings starting at $2,495
Used Nissan Armada
155 Great Deals out of 8,238 listings starting at $1,995

Used Cars For Sale

2017 Chevrolet Tahoe LS 4WD For Sale
971 listings starting at $40,260
2016 Chevrolet Tahoe LS 4WD For Sale
36 listings starting at $33,900
2015 Chevrolet Tahoe LS 4WD For Sale
107 listings starting at $29,900
2014 Chevrolet Tahoe LS 4WD For Sale
28 listings starting at $17,795
2013 Chevrolet Tahoe LS 4WD For Sale
51 listings starting at $18,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.