2009 Sierra Plugs-n-Belts

AzDragonLord · February 7, 2015

Just past 95,000 miles and I had the parts on hand, so I set out to replace the plugs and wires on my 2009 Sierra today. I'm glad I don't have to do that very often! Driver side wasn't bad, but passenger side was tougher due to all the extra stuff in the way. Plug for cylinder 8 was nearly impossible, so I ended up removing the tire and shroud, then entered through the wheel well to reach it. That was much better! It might be easier to do the whole side from the wheel well next time....plugs are at eye-level then.

I also replaced the serpentine belt and the A/C compressor belt while I had them available. Still have to do hoses, coolant and transmission.

AzDragonLord · February 7, 2015

Plugs looked real good. Number 7 showed slight signs of overheating, but not by much. They looked like they could do another 100k.

Belts looked OK too, but a side-by-side comparison showed obvious wear.

LaserBlueZ71 · February 10, 2015

Just past 95,000 miles and I had the parts on hand, so I set out to replace the plugs and wires on my 2009 Sierra today. I'm glad I don't have to do that very often! Driver side wasn't bad, but passenger side was tougher due to all the extra stuff in the way. Plug for cylinder 8 was nearly impossible, so I ended up removing the tire and shroud, then entered through the wheel well to reach it. That was much better! It might be easier to do the whole side from the wheel well next time....plugs are at eye-level then.

I also replaced the serpentine belt and the A/C compressor belt while I had them available. Still have to do hoses, coolant and transmission.

Honestly, don't bother with any hoses yet.

Rubber is significantly more advanced today than the rubber of yesteryear. Cars in the 90s and older, you would be replacing hoses every 5 or 6 years. The rubber today is darn near space age. You can expect hoses to be almost the life time of the vehicle now with the additives they put in the rubber. 15 years is not an unrealistic expectation at all for modern coolant hoses and the like. Unless they have wear from rubbing/vibration, I would say your good for quite a while yet.