Changing Plugs For The Fist Time 2007 Tahoe Z71

[GlennSullivan]

So I'm going to change the plugs and wires on my 07 Z71 for the first time (84,000mi) and I've heard some of them are a bear to get to. Which are the worst and does it help to access them from underneath (I have a lift) or through the inside of the fender well?

TIA

 

[Geotrash]

So I'm going to change the plugs and wires on my 07 Z71 for the first time (84,000mi) and I've heard some of them are a bear to get to. Which are the worst and does it help to access them from underneath (I have a lift) or through the inside of the fender well?

TIA

Actually, they're not bad at all. #8 is the only one that's particularly challenging (pax side rear), but the trick is finding the right combination of sockets and extensions to get at it. With your wires being original, chances are you'll trash the boots getting them off, but no big deal as long as you have new wires. I can do the job in a half hour now from the top of the engine.

What did you do to your NNBS GMT900 Tahoe/Yukon Today?

Change the brake fluid for the first time since I bought it(3years)... Curious, how many quarts did you use and did you bleed the ABS as well? I went through 6 quarts when we did ours, bled the ABS pump with the Tech-2 and the traditional way to complete.

www.tahoeyukonforum.com

 

[GlennSullivan]

T

Actually, they're not bad at all. #8 is the only one that's particularly challenging (pax side rear), but the trick is finding the right combination of sockets and extensions to get at it. With your wires being original, chances are you'll trash the boots getting them off, but no big deal as long as you have new wires. I can do the job in a half hour now from the top of the engine.

What did you do to your NNBS GMT900 Tahoe/Yukon Today?

Change the brake fluid for the first time since I bought it(3years)... Curious, how many quarts did you use and did you bleed the ABS as well? I went through 6 quarts when we did ours, bled the ABS pump with the Tech-2 and the traditional way to complete.

www.tahoeyukonforum.com

Thanks much, I found the wires were difficult to come off with the plug swap on my C6-Z06, so this time I bought the full wire set (19417612) with the plugs.

Interesting that the plugs are supposed to come pre-gapped at the specified .040 and when I checked a few, I found them at different gaps between .035 and .040.

Should I just (carefully) regap them all at .040 or is there a compelling reason to go tighter?

 

[Geotrash]

T

Thanks much, I found the wires were difficult to come off with the plug swap on my C6-Z06, so this time I bought the full wire set (19417612) with the plugs.

Interesting that the plugs are supposed to come pre-gapped at the specified .040 and when I checked a few, I found them at different gaps between .035 and .040.

Should I just (carefully) regap them all at .040 or is there a compelling reason to go tighter?

Regapping those is risky, but if you feel comfortable doing it, then that's what I would do.

 

[GlennSullivan]

Yeah, I‘ve done it a bunch of times. The strap is the same as a regular plug. Use a wire gauge and move the strap carefully. Def don’t stick in a flat feeler gauge and bang the plug on a steel workbench. LOL.