2003 4x4. Just want an opinion on one or two things. I all ready replaced the front wheel hub/bearing on both sides probably about 3 years ago. One side is going bad (feel grinding when it rotates also has a bad sensor). Should I replace them both again? Also any recommendations on which one I should get? I know Timken is preferred but also the top of the prices. I just don't know if they last. If they are worth the money i'll get Timken. if not i'll go with others.

 

Timken or moot you'll. Be fine. If you have any kind of thar lift I believe 3 years is above average. That's tbar

 

I doubt it,but they should have a lifetime warranty,if you saved the receipt swap em out.

Other then that,timken is nice.

 

the best warranty I saw so far is on the Timken (3 years). Haven't seen lifetime any place yet. Timken is just pricey just wondering if they are worth the cash

any tips or tricks for O2 sensor? I know the one is along the exhaust. any pointers to where the second one is located? I am getting a code for that too..

I am just trying to work threw the codes to get her back to good shape.. I have fixed one and a new one comes up. the speed sensor is the only one that is persisted threw what I shave done so far.

 

O2 sensors: one before the cat, one after the cat...actually cats as there are two cats.

Soak base of old O2 sensor with oil so as not to mess-up the threads in the exhaust piping.

 

Timken bearings are considered the best however, the key to longevity for any hub/bearing is keeping camber at zero degrees, and toe-in within spec, (good quality wheel alignment).

If you have multiple DTC's, it would be best to clear all of the memories with a scan tool and perform a General Motors Driving Cycle. Then post the DTC's you're getting in the order they are retrieved. DTC's never tell you to replace a part, they tell you what circuit is/was out of range. Following the correct diagnostic flow chart will tell you what the problem is.

O2 sensors: on your 2003 there are three O2 sensors, one close to each exhaust manifold outlet, (in the "Y" pipe) and one just after the downstream catalytic converter.