Join Date: Oct 2016
Location: Lebanon, MO
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Started the 100,000 mile maintenance (3.6 engine)
Sitting at 104,000 miles so I started the recommended maintenance last week with a normal oil change. I also ran some GM intake cleaner through the intake and dumped a can of Seafoam into the gas tank and filled it up. The intake cleaning was simple. I disconnected the hose at the back middle of the intake and used an IV style bottle and hose to slowly let it suck into the engine
I idled the engine at 2000 rpms while I did this. I used a pool stick wedged between the seat and gas pedal. I got a can of CRC intake cleaner designed for direct injection engines and I will do this one day this week or next weekend. I am going to order AC Delco stock replacement plugs since the local parts stores want a fortune for them.
Today I drained and filled the coolant. On the radiator on he lower passenger side, there is a white plug that you loosen and the coolant will drain from the bottom of the radiator into your drain pan. So what I did was drain and fill with water until the water was running clear. I also removed the overflow container and cleaned it out. There are 3 nuts securing it to the inner fender, 2 up top and 1 on the bottom sorta hidden. I removed the front half of the air intake to give my large hands enough room to get a wrench on the nut. All you do is loose it enough the pull the bottle up and out. I refilled the coolant with Peak long life coolant since I had a gallon left over from the water pump job on my Yukon. So I went and bought a gallon of concentrated coolant and a gallon of distilled water to give me 3 gallons of new coolant. At one point, I was idling the car while pushing the old coolant out and new coolant in... don't do this if you get easily distracted... I put almost 2 gallons of new coolant in so I may drain and fill again just to make sure all of the old Dexcool is out. I have 8 gallons of old coolant to take to the recycling center at some point this week.
So long story short, oil change, coolant drain and fill, intake cleaning and then new spark plugs to follow and that is it. Belt still looks good and the trans fluid looks good and it better, since it has been drained and filled 3 times so far during my ownership. I will probably do the power steering fluid and the brake fluid will get flushed when it is brake job time.
If anyone plans on doing any of this stuff and you have questions, just ask. I chose to use Peak extended life coolant because I have used it in other Dexcool vehicles I have owned and have not had one problem with it. It is also cheaper, especially at Harbor Freight or Dollar General. I wouldn't go with anything but AC Delco on the spark plugs.
2014 Chevy Impala LTZ Limited
- My daily driver... 5% Window Tint, Rosen GM1210 Stereo, Polk Audio Components and 6x9s, Pioneer, Kenwood amps and sub, Addco Rear Sway Bar, ZZP Strut Tower Braces, LED fogs and low beams, back up and interior lighting, SS dash, stereo and shifter trim.
2004 Pontiac GTO
- Garage queen from day 1... bought brand new 12/31/04... Quick Silver Metallic/Black/6 speed... too much to list
2004 GMC Yukon SLT
- Wife's DD... bone freakin stock