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

755

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?

755

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 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 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

  • 2010 GMC Sierra crew cab 4x4 Z71 - low oil pressure 3 answers

    Is it normal for this sierra to run 39% oil pressure on the highway on cruise control and at times 20% percent on idle in the city? Doesn't that seem too low? I took it to the dealership and they sa...

    2010 GMC Sierra 1500 SLE Crew Cab 4WD

    -

    Maintenance & Repair

  • Oil pressure alarm 1 answer

    When truck is warm, oil pressure alarm goes off when idling. Gauge reads normal. To get alarm to stop, have to either shut off engine or put in park and rev engine

    2004 GMC Sierra 1500 4 Dr SLE 4WD Crew Cab SB

    -

    Maintenance & Repair

  • rough idle, stalling, loss of power. 228 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • Oil pressure 1 answer

    What is the normal operating oil pressure for a 2013 GMC Sierra 1500 5.3 liter engine

    GMC Sierra 1500

    -

    General

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 66,147 nationwide Sierra 1500 listings starting at $1,995.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,920
#2 John Saffrahn
John Saffrahn
Reputation 3,490
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,070
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,732 Great Deals out of 167,272 listings starting at $1,800
Used Ford F-150
2,214 Great Deals out of 208,693 listings starting at $1,499
Used GMC Sierra 2500HD
112 Great Deals out of 14,550 listings starting at $2,650
Used Toyota Tundra
471 Great Deals out of 33,173 listings starting at $2,500
Used Dodge Ram 1500
441 Great Deals out of 11,296 listings starting at $1,000
Used Toyota Tacoma
506 Great Deals out of 38,897 listings starting at $2,900
Used Chevrolet Silverado 2500HD
318 Great Deals out of 26,738 listings starting at $1,250
Used GMC Yukon
358 Great Deals out of 16,994 listings starting at $2,500
Used Chevrolet Tahoe
563 Great Deals out of 27,154 listings starting at $999
Used Ford F-250 Super Duty
347 Great Deals out of 47,432 listings starting at $1,795
Used Chevrolet Colorado
231 Great Deals out of 23,455 listings starting at $2,200
Used GMC Canyon
84 Great Deals out of 7,544 listings starting at $1,999

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
40 Great Deals out of 41,472 listings starting at $20,121
2016 GMC Sierra 1500 For Sale
94 Great Deals out of 3,768 listings starting at $17,695
2015 GMC Sierra 1500 For Sale
102 Great Deals out of 3,916 listings starting at $15,400
2014 GMC Sierra 1500 For Sale
100 Great Deals out of 4,255 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
61 Great Deals out of 2,118 listings starting at $9,260