I'm looking for a recommendation for a reasonably priced, but still useful OBD Diagnostic Scan Tool for my 2003 Chevy Tahoe.

Thoughts?

What is important to you in the scan tool? Simply pulling codes? Data logging? ABS or BCM codes? Would you feel that other devices to help with this (Cell phone, PC, etc) are preferable, or a hindrance you don't want to deal with? How much are you looking to spend, and what other vehicles do you hope to be able to use this on?

Using a smart phone or iPad would be my preference, assuming I can get the right functionality. I'd like to be able to pull engine codes at a minimum and have them explained to me. Maybe even suggest what the problem may be and the most likely solution(*). I'm sure that the more I pay, the more I'll get... If there'* something out there for less than $100, that is worth buying, that would be my preference. However, I'd be willing to pay more if the value is there. Probably the max I'd like to pay is $250

The route that comes to mind is a Bluetooth OBD 2 Adapter. I don't have one myself, however that is the route many like to go. You will need to do some research on the adapters however, because there are some units that perform sub par. The next bit is the app. Many use the Torque app, but it tends to lend itself to more advanced users.

I use the Bluetooth adapter with Torque Pro. PLX Devices | Electronics & Automotive

Do not get the cheap **** from ebay. They are known for bad ELM323 chips or clones. I repeat, do not get the cheap **** from Ebay. As the old saying goes, you get what you pay for.
I think I paid $5 for the app.

Is there one out there that also reads B, C, and U codes?

ScanXL at Palmerperformance.com according to them will see body, ABS, Airbag and other systems. Just looked, 1996-2009 GM

I also have this software, been awhile since I used it. I should go back out and try it again to see what it sees on my 2002 S10.

Thanks for the advice... there are several YouTube reviews online also. Several on the Bluetooth variety. One of them that got high reviews is the BlueDriver. Any experience with that one? The Torque Pro app also seems to be a favorite.

I'm still doing my research, but I'm definitely leaning in this direction

I never heard of BlueDriver.

I have an Actron CP9580. It reads and clears codes, but it also scans (shows live data), records, and reads ABS codes, explains what the DTC'* mean and provides the most common fixes for each code. It reads the VIN and the data it provides is vehicle specific. Also has life time free updates over the internet.

I paid under $100 on Ebay. Primarily bought it for the ability to read ABS codes, but scanning is a nice feature to have.