Can u convert 4x4 into 2wheel drive on a 99 tahoe

Could be transmission. Or a plugged catalytic converter, or the rear differential. Does it get worse when warmed up? Is there grinding/unusual noises? Where does the sound come from? Try starting out with the transmission in first and manually shift up the gears as you drive. Does it seem to slip? I assume its an automatic. Depending on your level of experience, they can be complicated to replace yourself.

Have the drive shaft checked for being straight
& have it balanced, after you replace ALL joints,
not just one.

You will need the yellow pages for a driveshaft
only shop.

If you used a hammer,then odd things happen
Need right tool & procedure

The shop I used when I had a trans business,
let me in & did what I needed, as I waited

have u checked your catalic converter

i have never heard of dog legged before. but if you mean the truck dog tracks then check the rear u bolts for tightness, check for broken main leaf spring, check for broken centerbolt on spring pak

Is it slipping at all.
If not then your torque converter has failed.
hope this helps FixYa leave feedback

PO741=tcccs solinoid.I had to replace one in my old ladys car.it used to shudder real bad also when the converter would lock up and throw the PO741 code..not real hard to replace and only about $40.00 for the solinoid from the dealer.

Your O2 sensor has been running for a long long time. OBD 2 checks both O2 sensors *(pre and post catalyst) to confirm it is just a bad sensor and not an out of range sensor condition or catalyst problem.

If your exhaust system was plugged you would hear it as a loud hissing noise of exhaust escaping any way it could before the plug. You would also notice nothing coming out of the back of the exhaust system. Both easy to rule out.

Replace the appropiate O2 sensor, reset your computer, and drive!

Good luck and be careful!

You need a scanner to look at fuel and spark parameters. Bad coil or injector Take it for a drive while someone scans it

I'd have a fuel pressure test done to be sure, it isn't fuel related again. Takes 5 or 10 minutes so cost should be minimal. The other thing that comes to mind is a plugged exhaust. (catalytic converter) Quite possible on a 10yr.old vehicle.

Needs rebuilt converter is bad, a progressive problem that caused overheating most likely. www.TransmissionGarage.com