F&Yb0dluvr

I just changed my 01 21 months and 14kmi ago with ac iridiums and gm red wires...I just did a seafoam top end clean recently and could swear it's more jumpy at idle now...I tried pulling a wire off a plug on a few of them and it's already seized on there and feels like if I pull too hard it will break off I wasn't able to save 1 original wire when I did it the last time...it was a PIMA changing wires on these cars every 2 years unless you drive A LOT year is overkill IMO...

Vetteman Jack

If you want to change them, it certainly won't hurt anything. I changed mine in my '00 when it had about 33K miles on it - the wires were still good but the plugs had some wear to them.

You might pull a plug/wire or two and see how they look. Then go from there on whether to change them or not.

vette48

I have a 2003 z06 with 23,000 miles and plug wires look new, never changed, even the hoses for the rad look great..all depends on how you feel about doing the job, and its not easy to just pull wires as you can destroy good ones or bad wires..heck my 1999 honda has 195,000 miles on it and the wires were never changed and it runs like a brand new honda,,, I KNOW ITS NOT A VETTE just stating a fact... GOOD LUCK but if you start pulling plug wires better have a plan in effect to replace them just in case you break any.... Mike

3boystoys

And the C5 is relatively easy compared to some cars, some you have to pull the intake to get to some cylinders or worse. Don't look forward to the Hemi in my Challenger, 16 plugs in that thing.

eddiebroadway

I find if you gently rotate both ends of the boot before pulling you can save almost every wire, you will feel it let go. Use Dielectric Silicone on both ends when you reinstall. I have done many broken exhaust bolts and manifolds on 99-up GM trucks, most always reuse the wire unless they want a tune-up as well. Also anti-sieze the spark plug threads, steel into aluminum.

Fed Up

Mostly good points, but all missing one key fact- metal core plug wires build up resistance over time, and 13 or so years is time, big time. If anything, the GM reds or any silicone is a cleaner zap to the plug anyway.

As far as plugs go, my car was relatively well treated by its previous owner, and the original 2001 plugs were quite worn down. Still firing? Yep, but the gap had grown well outside of specs.

Key thing here? Cheap gas milage job, althougha bit annoying, and DEFINITELY have a set of wires of your choice on standby- You'll very likely damage one or two (13 or 14 year old ones), even with a boot puller and a twist.

yoymon

same question I had on my 99 with 38k on it so I just changed them and all of the plugs and all of the wires looked just fine, it made no difference whatsoever but I had already bought the plugs/wires so I just did it, and its gravy job

3boystoys

BUT, what you do it every 2 years now that you know this?

yoymon

no way...but I already knew that, also I didn't damage any of the wires removing them, ive rarely had that problem with any car ive owned

Franko

I just changed mine out last week on my 2000 after 15 years. I to thought they would be hard to remove, but I was really surprised how easy they came out.

NukeC5

Just thanking threeboytoys for the rude PM. Obviously he is very upset. Still going on about it in this thread to looks like. Pathetic

I feel for you guys that find plugs and wires that hard a job. DIY projects probably aren't for you. The LS1 is the easiest v8 engine to change them on I've ever seen.

I gave my opinion like everyone else has. Either take it or leave it.

3boystoys

Think we'll LEAVE IT CHIEF.

NukeC5

ooo you found a typo from a smart phone

aj98

IIRC, scheduled maintenance doesn't list change plugs until 100k miles.

SG Lou

Same here !

Corvette_Ed

They use the average mileage driven per year for that recommendation; it does not take into account cars that only see daylight on the weekends. Which means that their recommendation is saying to change the plugs/wires every 6-7 years.

thisMSGgood4me

Then why don't they explicitly say that as part of the recommended change interval? They do it with oil changes and coolant changes, so why not these?

Corvette_Ed

Why did they place the PCM below the battery?

Some questions we just don't have answers for.

thisMSGgood4me

That's NOT the same, and you know it.

Typical response by someone who doesn't have a good answer.

Corvette_Ed

It is exactly the same. How is anyone except for those who wrote the manual supposed to know the reasoning for their logic? My best guess is that they didn't expect someone to take 13-15 years to go 100k miles.

No need to get an attitude when someone is just trying to be helpful.