2006 Chevy Suburban Z71 maintenance over @150K advice?

[BurbaDurb]

I bought a 2006 Suburban Z71 5.3 V8 Vortec 4x4 from a police department where it was used as a transport to and from the airport for VIPs, not a field vehicle, so it has only easy highway miles on it. I'm replacing the spark plugs, wire set and coils. Should I consider replacing the fuel injectors? They are just so expensive.. But my question is about necessity. Should I do it or not worry about it, or is it even needed? I also replaced the air filter with a K&N. I have heard there are computer chips available to boost fuel economy and performance a bit, any suggestions? Also, any other suggestions for maintenance recommended after 149,000 miles (besides oil change, etc), or ways to boost fuel economy would be appreciated. I'm planning on doing a cross country trip with the burb so I want to get it all ready before departing. From the work I've done on it already it has been so much easier and user friendly than my previous cars (ie changing light bulb took minutes). Really enjoying working on it so far, and trying to make this truck all that it can be, Thanks for any suggestions!

 

[zora]

Unless you are having issues with it dont bother changing the injectors. The check engine light will notify you of any problems you dont detect in driving it. Attached is the link to the service manual so you can check the section on maintenance. Performance chips usually require the use of premium fuel. You can check www.summitracing.com or www.jegs.com for chips.

http://www.extendedgmwarranty.com/owners-manual/chevrolet/2006-Chevrolet-Suburban.pdf

 

[Chuzz]

No need to replace fuel injectors unless you determine they're defective or leaking. I'd suggest running a couple of bottles of Techron fuel injector cleaner through the gas tank over the next 4-6 fill ups. Put one bottle in, drive a couple of tanks, then put in another bottle. I put one in my vehicles about every 6,000 miles and have never had an injector clog or stop working. Got 116,000 on my Equinox and 197,000 on my Grand Caravan.

 

[Jeffgolombeski]

if you dont have any problem with the injectors i would leave them alone until uly need to change them. as far as performance well adding a cold air intake would help a lil bit. also maybe look into a power programmer for ur truck

 

[Chuzz]

CAI's are a complete waste of money. The only way to increase performance is to do it properly by boring, new oversize pistons, porting and polishing the heads, performance exhaust etc. Very expensive and time consuming. CAI will make you think you've gained something simply because of the sound and you'll be stepping on it quite a bit until the newness wears off and you're tired of filling up more often.

 

[VanGo]

Don't take this the wrong way, but if you are only needing a vehicle to get you across the country and back, you might consider renting something smaller. The gas you save not driving the thirsty 4X4 burb would almost pay for it.

If you insist on driving it the usual tips apply; lighter weight oil, properly inflated tires, alignment, remove access weight. Do you need the 3rd seat?