Changing Spark Plugs

[fmf21]

I want to Change the sparks plugs on my 2004 GMC Sierra 2500 HD and I believe they have coil packs does that cause any problems? does that mean there are no wires involed also?

 

any tips be welcomed

 

thanks fmf21

justin

[pennzoil29]

Welcome aboard

[txab]

I want to Change the sparks plugs on my 2004 GMC Sierra 2500 HD and I believe they have coil packs does that cause any problems? does that mean there are no wires involed also?

 

any tips be welcomed

 

thanks fmf21

justin

 

You still have wires. Coil packs cause no problems. You should change your plug wires at the same time. Now's the time to do it. They probably need it

[99silveradoz71]

Welcome

[bigredmariner]

You still have wires. Coil packs cause no problems. You should change your plug wires at the same time. Now's the time to do it. They probably need it

 

+1 Welcome !

[VR021302]

Welcome to the forum

[txab]

Also, wait till your engine is cool.

[MarkD]

Welcome to the Site!

[C & A s Dad]

Cliff notes version of tips.

 

1) Engine completely cold

2) 7of the 8 are easy, the right rear can be a little more difficult. Use a long handled 3/8 drive flex head ratchet and a 5/8 plug socket. Get you something stand on so you can get over in there with it. Really no big deal.

3) Use dielectric grease on the boots at the coils and on the plugs (permatex makes a single use pack)

4) Use Antisieze on the plug threads. (permetex makes a single use pack)

5) Buy good wires. No big box retail economy wires.

6) Wires will be tough to get off. Twist the boot on the plug and pull at the same time. You may need to pull the snot out of them.

 

Oh yea, welcome to the forum.

[DofD]

Hey there and welcome to GM Trucks!

[pwall]

Welcome!