2007 5.3 GM engine 6 ksi at idle oil pressure normal

Asked by Mar 09, 2014 at 07:39 PM about the 2007 GMC Sierra 1500 SLE1 4WD

Question type: Maintenance & Repair

On my 2007 5.3 engine Oil pressure is at 35 ksi when start engine cold and when warms
up  pressure drops  to around 6 ksi at idle, when running  holds around 28 ksi with 8
cylinders when deactivates to 4 cylinder goes up to 45 ksi

Check engine light comes on after engine warms up and stays on. It has been doing this
for around 40,000 miles. I changed oil pump about 18 months ago when first started

Is this ok/normal?

Anything I can do to increase oil pressure? I currently use 5W-30 oil

5 Answers

Also when engine is warm at idle runs at 500 rpm and oil pressure is at 6 ksi Running on 8 cylinders at 2200 rpm oil pressure is at 28 ksi

775

most 5.3 should run at about 40psi mayb 30 at lowest on idle, if ur turning 2k rpm on highway should be around the 50psi mark, u could have a bad seal at oil pump or something, power-train warranty from gm covers til 160k or 5yrs, u may get lucky, if you change oil to a diff viscosity you could run risk of running bearings dry especially since ur having oil pressure issues, i run 5w40 cj 4 rated heavy duty rotella t oil in my 5.3 gas ( yes its desiel rated oil)

What does this type of oil do?

775

the oil i run has a better additive package designed for heavier duty use, i use my truck for a truck, hauling, payload, higher rpm range, i find its less inclined to burning as well, you can try using it but i would recommend finding the root cause to ur oil pressure issue, sierra/silverado forums reali help with ideas and eliminating and narrowing down ur issues

10

Hi Textiger66 did you fix the issue with the low oil pressure?

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • 2007 5.3 GM engine 6 ksi at idle oil pressure normal 5 answers

    On my 2007 5.3 engine Oil pressure is at 35 ksi when start engine cold and when warms up pressure drops to around 6 ksi at idle, when running holds around 28 ksi with 8 cylinders when deactivates...

    2007 GMC Sierra 1500 SLE1 4WD

    -

    Maintenance & Repair

  • 2007 sierra 1500 oil pressure problem 3 answers

    I have been having similar issues. My 2007 gmc sierra lte 6.0L gas on start up slowly reaches 60psi. After driving 10min the oil falls to 35psi on the freeway and 20psi on town roads. Idle is at 1...

    2007 GMC Sierra 1500 SLE1 Crew Cab 4WD

    -

    Maintenance & Repair

  • engine stops while idle on my 2007 gmc sierra 1 answer

    truck engine would stop while driving and in idle. Now truck wont start at all.

    2007 GMC Sierra 1500 SLE1

    -

    Maintenance & Repair

  • Does low oil pressure cause fuel to burn lean? 3 answers

    I had to replace my motor a year ago. I got a used engine. From the beginning the check engine lights comes on after about 40 miles. The oil pressure when hot idles at 10 ksi, when running on 8 cyli...

    2008 GMC Sierra 1500 SLT Crew Cab 4WD

    -

    Maintenance & Repair

  • Oil pressure 2 answers

    Ok so when driving the oil pressure is at 1 line above 60 and when I stop it drops down to about 45 no noise or rattling but after sitting for about a minute it drops to 40 then starts rattling an...

    1998 GMC Sierra 1500 C1500 SLE Extended Cab SB

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,002 nationwide Sierra 1500 listings starting at $1,700.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,270
#2 John Saffrahn
John Saffrahn
Reputation 3,640
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,330
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,932 Great Deals out of 182,333 listings starting at $999
Used Ford F-150
2,091 Great Deals out of 192,317 listings starting at $290
Used GMC Sierra 2500HD
129 Great Deals out of 12,674 listings starting at $2,995
Used Toyota Tundra
416 Great Deals out of 34,266 listings starting at $1,950
Used Dodge Ram 1500
398 Great Deals out of 10,886 listings starting at $1,000
Used Toyota Tacoma
549 Great Deals out of 42,268 listings starting at $1,995
Used GMC Yukon
419 Great Deals out of 20,457 listings starting at $1,495
Used Chevrolet Silverado 2500HD
326 Great Deals out of 28,528 listings starting at $990
Used Chevrolet Tahoe
593 Great Deals out of 33,019 listings starting at $1,500
Used Ford F-250 Super Duty
331 Great Deals out of 43,931 listings starting at $1,450
Used GMC Canyon
101 Great Deals out of 11,880 listings starting at $3,500
Used Chevrolet Colorado
250 Great Deals out of 27,512 listings starting at $1,000
Used Nissan Titan
175 Great Deals out of 18,876 listings starting at $3,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
82 Great Deals out of 43,558 listings starting at $23,368
2016 GMC Sierra 1500 For Sale
96 Great Deals out of 3,450 listings starting at $17,670
2015 GMC Sierra 1500 For Sale
94 Great Deals out of 4,289 listings starting at $12,899
2014 GMC Sierra 1500 For Sale
93 Great Deals out of 4,180 listings starting at $13,995
2013 GMC Sierra 1500 For Sale
52 Great Deals out of 1,954 listings starting at $8,999

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.