LBZ: LBZ glow plugs, how long should they last?

[tlohman]

I'm at 74K miles on an 07 Classic LBZ and getting code P0671 Glow Plug circuit on cylinder 1. Is this about the right number of miles for a "normal" glow plug replacement?

The truck has been hauling horse trailers over its life, but nothing strenuous. Mostly in a very temperate climate near San Francisco too. Since I'm new to diesels, I just want to calibrate my expectations.

GM customer service seems willing to negotiate on service cost, even though there isn't a specific recall/TSB on my specific year/model, but I don't want to push on GM if this is an normal maintenance item.

VIN is 1GCHK23D27F129694

 

[Dozerboy]

It shouldn't be a normal maintenance item, but be seems to be on the LBZs. There is a TSB on the 06s that if one goes bad they all should be replaced. IIRC some guys where getting them all replaced under emissions warranty for the $100. I have just been doing them myself 1 at a time as they go bad. My fist one went out at 65K and I have had 3 more go bad in the last 15K. I too live in a mild climate, but do make a few trips to very cold areas a year.

 

[tlohman]

Thanks, very helpful to hear.

I just found out for 07 my engine components are warranted for 5 yrs, 100K, so I'm starting the negotiation with my local dealer for warranty work. It will be interesting to see if they just replace the one showing bad or all the glow plugs.

 

[Trotorx2]

I had one go bad recently and the dealer replaced all 8 and charged me the $100 then a week later sent me a check for $100 saying GM paid for it all.

 

[duratothemax]

as dozerboy said, its not a regular maintenance item. There is no reason they shouldnt go several hundred thousand miles before needing replacement.

Unless the truck is actually throwing a code for a bad glow plug I would leave it alone.

 

[x MadMAX DIESEL]

What do they cost for a single plug, anyone have a P/N handy?

 

[arneson]

Roughly 25 a piece i think. Cant remener but its around there. Ive replaced a few on mine.

 

[lotsofmiles]

Still running the originals, 387,000 miles

 

[emiller3]

I have recently had a code on #6 with 138,??? On the clock. Guess I'll change them as needed.

 

[coker6303]

Do you have to change them or can you just ignore the code in Efi and live without it working? I have 2 bad on my LMM now, I replaced 1 a while back.

I turned the codes off for now, it's summer time!

 

[emiller3]

Yea I might as well do the same. It's not like its needed down here anyway.

 

[trashygasman]

I have had 2 of mine go bad. just been replacing them as they go. they are only $20-$25 iirc. easy fix

 

[07bluelbz]

Had one go bad on my #6. I bought a new one from O reilly for like $17 and replaced it myself. No issues since knock on wood.

 

[Dozerboy]

I've replaced almost all of them in 125K