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65K Mile Tuneup?

nakedicarus

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nakedicarus Enthusiast

nakedicarus

Posted
Posted

I have a stock 2007 Silverado 4x4 LT with a 5.3l FlexFuel that I purchased new.

 

Six years and 65K miles later, it's not the young whipper-snapper it used to be, but I've been good about proper maintenance, and it shows. No CELs, all original paint, no issues whatsoever.

 

Except after six years I feel like it's a bit sluggish, with considerably less power than I remember it having when it was new.

 

I looked in the owner's manual for a maintenance schedule or something similar, but was unable to find anything.

 

What would be the recommended items to service at 65K miles/6 years?

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Chris Senior Enthusiast

Chris

Posted
Posted

Go through your fluids, make sure cats aren't bad, clean MAF and throttle body

 

Sent from my DROID RAZR MAXX using Xparent Red Tapatalk 2

03blackz71 Senior Enthusiast

03blackz71

Posted
Posted

Mine just passed 70,000 miles and I had the trans flushed and the 4x4 fluids changed (front/rear axles & diff.). I am going to change the spark plugs here shortly and I should be good to go.

ujtruck Enthusiast

ujtruck

Posted
Posted

coolant system flush

Trans / Transfer Case flush

cleaned / check battery terminals and Ground location

check front end (T-Rods, Ball joints wheel hub bearings etc)

Black2011 Enthusiast

Black2011

Posted
Posted

Fuel filter?

Air filter clean?

Cats is another silent killer of HP

o2 sensors?

Like others have said, consider cleaning the MAF sensors, check everything related to fuel injection, and air in and out of the engine.

gnet158 Senior Enthusiast

gnet158

Posted
Posted

try using a good injector cleaner. i prefer Seafoam.

 

x2, seafoam that bad boy just before your next oil change. Let he sit for at least 20 minutes, then watch the smoke fly, then change your oil A.S.A.P, add some seafoam to your tank and you'll be good to go. I'd wait until at least 80k to change your plugs. But if you want to then it's cheap enough.

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