Hello 00 to 06

[Amaster]

Hello 00 to 06 yukon and tahoe owners. I need some help my family has recently got an 04 yukon xl for a family member and the 6.0 recently ran a code for both knock senors don't ask me the codes my dad cleared them as always when they first show up. So how hard is it to replace those? Thanks in advance A

 

[OR VietVet]

Is under the intake under a cover. Use Genuine GM parts and replace the harness and check out you tube video(s) to get an idea. I like quality Fel-Pro gaskets for reassembly. Cleanliness is next to Godliness as well.

More Information for GM GENUINE 2133521

www.rockauto.com

More Information for GM GENUINE 12601822

www.rockauto.com

More Information for FEL-PRO MS98016T

www.rockauto.com

More Information for GM GENUINE 12558178

www.rockauto.com

 

[rockola1971]

Easy Saturday job. Get your gaskets and cleaning materials ahead of time and have them all ready. Pull the intake and the valley cover plate and they are right there. As above says, dont even think about reusing the original baked wiring harness that goes to the knock sensors.

 

[blueinkd]

Easy depends on your mechanical abilities and skill. If you have some basic tools, its a 2 hour job taking your time and being careful. Make sure you borrow/rent a torque wrench as you dont want to overtighten these going back in. I had the great displeasure of the rear one breaking off in the block. That was fun extracting the broken stud. PLEASE make sure you buy AC Delco sensors. I used delphi the first time and was taking them out 4 months later due to a CEL.

 

[corvette744]

Is under the intake under a cover. Use Genuine GM parts and replace the harness and check out you tube video(s) to get an idea. I like quality Fel-Pro gaskets for reassembly. Cleanliness is next to Godliness as well.

More Information for GM GENUINE 2133521

www.rockauto.com

More Information for GM GENUINE 12601822

www.rockauto.com

More Information for FEL-PRO MS98016T

www.rockauto.com

More Information for GM GENUINE 12558178

www.rockauto.com

Are these the same part numbers for the 5.3 t motor

 

[OR VietVet]

Are these the same part numbers for the 5.3 t motor

Yes. Watch a few you tube videos for the procedure. Not just one video. Want to see the steps about sealing the harness cups procedure.

 

[CBIII]

I agree with the comments here. It seems these trucks prefer AC Delco parts to Delphi in my (limited) experience with replacing one for the other successfully. As for the harness, make sure you get a new one as well. Even if the old one looks fine, you may very well damage it trying to get it disconnected to the sensors. Cheap insurance/time saver.