It's tune-up time...

Anything related to the factory RPO Crew Cab.

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It's tune-up time...

Postby Gary H » Sat May 17, 2008 6:47 am

Actually, it's probably way past tune-up time at 96k miles so I'm out in the driveway armed with plugs, wires, cap, rotor, etc. It was quite a fight to get the wires out and now I'm staring at the number 3 plug that is so neatly blocked by the steering shaft. Any tips on getting it out?

Also since I'm so close to the 100k mark, anything else I should be lookiing at?

Thanks!
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Postby green02crew » Sat May 17, 2008 7:42 am

It is not past tuneup time at all according to GM. It was supposed to last 100k. I would do all fluids/filters. Differentials, transfercase, transmission, oil, fuel filter, air filter, just to name a few things. I did mine at 50k and will again when I hit 100k.
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Postby HenryJ » Sat May 17, 2008 8:06 am

Service the evap vent valve. That one is not too bad.
Save up for O2 sensors. They are on the down hill slide and you may see some improvement in mileage.

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Postby Gary H » Sat May 17, 2008 8:17 am

Hmmm. Better add a driver's side motor mount to the list too. On the positive side, the broken mount made changing that #3 plug a bit easier! Just hooked up the hoist to the left side factory hook and lifted it up. Mount ordered.

I just did the oil filter change but I hate to admit I've never changed any of the other fluids. Also put a K&N filter in it a long time ago. Just now cleaned it. What a mess.

So where is the evap valve? I'm assuming it's on top of the evap canister but I looked around and can't find it. Just replaced one of the O2 sensors but I'll get ready for two more.
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Postby HenryJ » Sat May 17, 2008 8:37 am

Remember the old search ^ ?

There is a good thread on it with pictures: Evap Vent Valve Filter

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Postby Gary H » Sat May 17, 2008 9:20 am

HenryJ wrote:Remember the old search ^ ?

There is a good thread on it with pictures: Evap Vent Valve Filter


I don't know why but I always have the worst time finding anything with search engines. I try to get Sharon to find things for me. She is good at it.

Man, I would have never found the canister. I'm used to finding them under the hood, not under the back end. Thanks!

Well, I got the plugs wires cap and rotor in. I didn't crack the distributer either! I had almost forgotten about that until I saw the plastic.
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Postby Gary H » Sat May 17, 2008 9:54 am

Well, I took it for a drive and it seems to run much better. The idle is much smoother. Now for the fuel filter and other things to change. By the way, any recommendations on fuel additives to clean the injectors?
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Postby HCO4x4 » Sat May 17, 2008 4:12 pm

the lucas cleaner in the clear bottle does pretty good for my truck, better milage too.
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Postby Horsehammerr » Sun May 18, 2008 2:20 am

Marvel Mystery Oil 2 OZ. per 10 gallons every fill-up, my throttle body and injectors look cleaner than new. I know it also helps keep the fuel pump/ gas gauge sending unit nice and clean and operating also.
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Postby Gary H » Sun May 18, 2008 4:21 am

Ahh! Good old Marvel Mystery oil! I forgot all about that stuff. I think I have a can downstairs. I used to use it in my air tools. I've lost count of all the other ways I've heard it can be used. Good stuff.
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Postby PATRICKH » Thu May 22, 2008 1:12 pm

I changed my plugs last fall and had the same prob. with the steering shaft in the way. I used a scocket with a wrench attached to get mine out. IT WAS A B*%#H!!!!!!!!!!

Did you break the mount taking it out or what happened ?
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Postby Gary H » Thu May 22, 2008 3:52 pm

PATRICKH wrote:I changed my plugs last fall and had the same prob. with the steering shaft in the way. I used a scocket with a wrench attached to get mine out. IT WAS A B*%#H!!!!!!!!!!

Did you break the mount taking it out or what happened ?


I knew the mount was broken already. It's next on my to do list. As "lead footed" as my wife can be (she drives it 100% of the time now), a broken motor mount is not something I want to leave broken! :shock:
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Postby roadrunner » Thu May 22, 2008 6:30 pm

Not what I think is the best thing in the world but when I changed my plugs I took a combination wrench of the correct size to fit the plugs and attacked it with the "fire wrench". Bent the box-end to 90 degrees and "reached" behind the steering shaft to remove and replace that dreaded hidden plug. If you try this method I suggest you use a cheap chinese wrench or similiar instead of ruining a snap-on or sk or other similiar good tool.
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Re: It's tune-up time...

Postby seayahawaii » Sat Feb 18, 2017 10:16 am

I've found that cutting the rubber around the steering shaft and just peeling it back a bit will give just enough clearance for a short socket and a flex extension gives just enough room....I change my plugs every time I take my SC out so I've gotten pretty used to it... My wife has a Mini Cooper S and to change the alternator I had to pull the front bumper off so I guess every vehicle has it quirks !!!
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