[Jonathan Hohn]

Hello, looks like a good bunch of information here. I'm hoping to get a couple ideas on what issues to look for first on this new to me truck. I bought an 04 Titan SE with 84k. The truck runs really well and it feels like brand new power under the hood. There are a couple lights on the dash though. Service engine light. Brake light. Slip light. I'm having the codes pulled asap. My only real concern is the limited slip or whatever kind of rear end it is. I have no experience with any type of push button locker at all. If that's even what it is. Will the code reader explain that? I did notice the what seems to be common seal leak at the axle. On one side. Anyway. The slip setting remains at I think "slip off" when I press/depress the button. What's the cost/damage associated with that. Worst case scenario? Thanks for any help.

 

[jesselivengood]

have all the computers scanned, not just ecm and report back the codes. I will help you as much as I can after that.

 

[Jonathan Hohn]

What other computers are there to be checked? Forgive me- I'm know nothing about this truck. Thank you kindly.

 

[jesselivengood]

have the ECM TCM TCS and AIRBAG scanned

 

[Jonathan Hohn]

So I had a neighbor with a reader. He hooked it up under the steering column. Said there might be a bad O2 sensor. Right or wrong I'm tired of hearing about O2 sensors and he couldn't tell me which one it was (I don't know how many there are) but anyhow. The truck runs like a scalded dog. Fast fast. One of the rear axle seals has the weep issue. What weight gear oil would be best if I needed to add any? Just want my levels right to buy me time until I pull the axle. Also any recommended brand? Remember, I'm trying to match the Orem oil so as to avoid an oil mixing issue. Not for a change, just for topping off. But while I have your attention, what oil do y'all recommend using when I do the bearing/seal change? Thanks! This is a great site btw!

 

[dreep]

So, there must be at least one code stored. If your neighbor can tell you the Pxxxx code number(s), you can isolate the likely cause pretty narrowly, in most cases. There are different codes for the different O2 sensors. Service manual list the codes or forum members can translate for you. What are the Pxxxx codes coming up?

Major brand fluids are generally compatible, so you don't have to worry about that. Just get a good name-brand 75W-140 GL5 gear oil for the rear axle. Lots of folks on the forum like Amsoil products, Royal Purple, Lucas, etc, etc. I like Red Line Oil synthetics. But really, any will provide good service, so long as regular, periodic changes are made.

Since your truck is 2WD, it won't have a factory e-locker rear. That wasn't an option for 2WD, so the differential is an "open" style, not positive traction, unless it's been swapped out for an aftermarket unit.

The slip light could be a relatively simple bad electrical connection to an ABS sensor or bad sensor. Or, it could be something more involved that will need further diagnosis.

Need the codes, as Jesse was getting at...

Hope this helps.