Yep and the factory service manual says to remove the manifold also.Chrislind2, kd7ctv and tehhax- I hope you all know the original poster was asking about the LFX or the 3.6L DOHC found in all 2012+ impala, not the 3.5L and 3.9L. The push rod engines are simple to do a tune up on. You don't even need the W-body ratchet either though it does make life easier lol
The LFX is a little different though, the plastic intake is molded to cover over the rear bank and makes it impossible for you to clear out the cylinder #3 and #5 coil packs, you can snake out cylinder #1 coil pack though.
I guess the laugh is on you Chislind2 for not being able to read the post correctly, I do this for a living/work at a professional shop.
LFX Spark plugs, who's done it??
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According to alldata which is the same as the factory service manual, torque spec for the intake bolts are 25Nm or 18 Ft/Lbs. No more excuses 
If you don't want to spend $200 for the printed factory manuals, alldatadiy.com has the same info on a subscription basis. I got a code for 2 years access for less than 15 bucks. Id be happy to give it to anyone that pms me. Best money on your car you'll ever spend for the diy'ers.
If you don't want to spend $200 for the printed factory manuals, alldatadiy.com has the same info on a subscription basis. I got a code for 2 years access for less than 15 bucks. Id be happy to give it to anyone that pms me. Best money on your car you'll ever spend for the diy'ers.
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