Had a few moments to spare lately to replace some original parts that were beyond due for replacement. Hopefully this inspires someone to dive into these simple jobs 
First was the Cabin Main Shaft Seal (45292-35050) and Rag Joint (45230-60010). This was a pretty easy one and replacing that rag joint definitely made a difference in the steering feel. Both the seal and RJ were blown out after 250k miles. Only thing I'd look out for is to make sure your truck is off and the steering wheel is locked so it doesn't move during the process.
The "Filter" (90917-11022) was next- this is that vacuum line guy that sits on top front of the intake manifold. This guy was surprisingly tricky b/c you need a big (23 or 24 I think) deep socket to get it on and off. The old one was pretty gunky inside and looked to be original.
Starter Relay (90987-02004) was just a swap. Old one actually looked fine so I put the new one in and saved the old one as a spare.
My favorite which had been bugging me for some time was the Oil Level Sensor (89491-60010). To my knowledge this is the one that controls the dummy light in the dash when the oil level is low. I had that light coming on intermittently despite normal oil levels and it drove me nuts. There are two that people often refer to this is the one that is on the drivers side of the oil pan. The other one is over on passenger side by the exhaust manifold and is round like a bell (I'm replacing that one next). So, this one is kinda awkward but a simple four 10mm and the wiring clip. Gotta rotate it a bit and you'll drip oil on yourself if the level is normal. This thing was really nasty. Again, super simple just swap it out and no more oil light!
First was the Cabin Main Shaft Seal (45292-35050) and Rag Joint (45230-60010). This was a pretty easy one and replacing that rag joint definitely made a difference in the steering feel. Both the seal and RJ were blown out after 250k miles. Only thing I'd look out for is to make sure your truck is off and the steering wheel is locked so it doesn't move during the process.
The "Filter" (90917-11022) was next- this is that vacuum line guy that sits on top front of the intake manifold. This guy was surprisingly tricky b/c you need a big (23 or 24 I think) deep socket to get it on and off. The old one was pretty gunky inside and looked to be original.
Starter Relay (90987-02004) was just a swap. Old one actually looked fine so I put the new one in and saved the old one as a spare.
My favorite which had been bugging me for some time was the Oil Level Sensor (89491-60010). To my knowledge this is the one that controls the dummy light in the dash when the oil level is low. I had that light coming on intermittently despite normal oil levels and it drove me nuts. There are two that people often refer to this is the one that is on the drivers side of the oil pan. The other one is over on passenger side by the exhaust manifold and is round like a bell (I'm replacing that one next). So, this one is kinda awkward but a simple four 10mm and the wiring clip. Gotta rotate it a bit and you'll drip oil on yourself if the level is normal. This thing was really nasty. Again, super simple just swap it out and no more oil light!
