2003 Sonoma ZR-2 Maintenance

[rmmagow]

My truck is at 107,000 miles. I would like to either do some maintenance or bring it in for some work.
Things I am thinking to do or have done:

Cap, Rotor, Wires and plugs.
Front and rear differential fluid change
Transmission fluid change (last done at 75,000).
Transfer case fluid?
Radiator flush and fill w/DEX. Still looks pretty good, I did the thermostat at about 80K.

I have had to change both front bearing hubs and the truck has a buzzy type vibration at highway speeds but it is not used on the highway very much and is not abused at all. My goal is to keep it healthy for a long time.
Anything else I should address? Think I could get this done for under $500 at an indy shop? I'm capable but the plugs look to be a PITA.
Thanks,

 

[drwet]

All good stuff to do. To that I would add: change your brake fluid. Also consider switching from DexCool antifreeze to the conventional (green) coolant. The red stuff is crap. I would also put some dye in your coolant and check for it in the oil. These engines are famous for leaking intake manifold gaskets. And if you are going to drain the cooling system, replace your thermostat. If it were me and I were doing all that, I'd replace the hoses as well. Maybe even the water pump.

Also what kind of shape are your brakes in? These trucks have rear discs. They're prone to seizing up from corrosion. Also have you replaced your door hinge pins and bushings? 107K they're going to need it. Serpentine belt should probably be replaced if it hasn't been done in a while. Inspect your tensioner pulley while you have it apart. Cheap to replace. And while you have that apart, inspect your water pump carefully for leakage or play or roughness in the bearing. Same goes for the other accessories.

Its a good idea to clean your injectors. I run some injector cleaner through mine on a regular basis. Sea Foam works well too. If it hasn't been done for a long time, a professinal cleaning might be a good idea. Also clean the throttle body really well.

Some guys suggest replacing the O2 sensors. I've never found that to be important. When they go, the light will come on and tell you, and its not like the truck is undriveable.

Just some stuff from the top of my head. (Actually its a list of the things I did to mine in the last year.)

 

[rmmagow]

Got burnt with the brakes. Blew out one of the lines, rusted. Real PITA to fix as I'm just not good with brake line work. I patched in a length of line and it's not leaking but I don't like that I had to do it anyway. I will most likely bring it to a shop and have the pros replace everything. All new fluid and bled but the pedal feels a bit spongy. May have always been that way, I just don't remember. This is my wife's baby and I just try to keep her happy.
Other maintenance items were addressed and the truck is running pretty well. Whoever I find for the brake lines can do the plugs too as I don't fell like fighting with them. 5 other cars to maintain, 4 of which need to be ready for the upcoming winter. If I was getting paid for all this, I'd be wealthy

 

[drwet]

Got burnt with the brakes. Blew out one of the lines, rusted. Real PITA to fix as I'm just not good with brake line work. I patched in a length of line and it's not leaking but I don't like that I had to do it anyway. I will most likely bring it to a shop and have the pros replace everything. All new fluid and bled but the pedal feels a bit spongy. May have always been that way, I just don't remember. This is my wife's baby and I just try to keep her happy.
Other maintenance items were addressed and the truck is running pretty well. Whoever I find for the brake lines can do the plugs too as I don't fell like fighting with them. 5 other cars to maintain, 4 of which need to be ready for the upcoming winter. If I was getting paid for all this, I'd be wealthy

I know the feeling well. Too much to do. The brakes shouldn't be spongy. Sounds like there is still air in there. Mine are rock hard.