SPONSORED LINKS

2004 GMC C2500 sensor codes

Tiny
COREY D HELGEMO
  • MEMBER
  • 2004 GMC C2500
  • V8
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
I have a 2004 gmc sierra 2500 hd and my check engine light is on and I had hooked it to a test set and was told that all 4 of my o2 sensors were bad. Now I heard that all the sensors wont go bad at the same time and that it could be a vacum leak or a fuel pump issue. How true is that and what could it possibly be.
SPONSORED LINKS
Wednesday, April 29th, 2009 AT 8:50 PM

1 Reply

Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
What kind of tests set? That is probably your problem, I suggest you take it somewhere and have them put a real meter (scanner) on it that will tell you which one it is, and which side its on and if it's a forward or backward one, keep in mind O2 sensors are only good for about 60,000 mile, now to answer your next question, yes a vacuum leak or a fuel pump issue will cause your O2 sensors to malfunction, but you are not describing any other problems you are experiencing with your vehicle, so have it re-diagnosed and let me know what happened.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, May 21st, 2009 AT 11:13 AM

Please login or register to post a reply.

Related Check Engine Light Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
VIEW MORE

Sponsored links