If you motor is running perfect, the cats should last 300k or more. My sons 01 5.3 we replaced at 320K, my 01 5.3 replaced at 150k because bad head gasket leaked coolant in the chamber. My moms 01 5.3 had the same code that I chased for months. Was a combination of passenger side rear O2...
I wish I could sell you this one. 10" is too big.........................Double edge sword. Great for the 4 camera but when I need to change the AC it's a PITA.
Agree with a deep clean first. Due to age, the overall system might be showing signs of normal wear and tear. Compressors do wear and leak back, condenser tubes plug up, filter plugged, drier... all these add up to poor performance. 16 years and 250k is a lot for any AC system in your...
4L60E transmissions are known for failing at 150k, your just got a little luckier than others. A simple rebuild will go for as little as $1,500, and , it may clear some of your other codes. Over the years I have noticed that some basic code readers do not give accurate info back and may show...
What he said, I would add that the front locker isn't really needed unless you plan on some good rock crawling. Nice to have but you will seldom need it. You could move up to 4.56 gears and gain a little more crawl ability.
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