Hello Everyone,

I'm kinda new to the forum and I'm a foreigner, so please forgive me if I'm gonna post in English .

I have a Trailblazer 2014 LTZ and willing to do the regular maintenance outside the CASA. It has 25K on it's Odometer.

1- Will it be safe to use ZIC X7 Diesel Engine Oil instead of Dexos2? I'm gonna use a 5W-30 as the Owner Manual suggests.

2- I think it's also time for an ATF change, saw some MAG1 DEXERON-VI and I wanna give it a try, is it okay or I better go with the OEM ACDeldo Dexeron-VI?

3- Do we have a Pane somewhere where we can drop, clean and change the ATF filter and place a new gasket or is it a sealed system? If yes, where can I buy these filters please? I'm looking for a complete flush since the shifting is kinda sluggish, wanna remove all in the torque converter as well as the line cooler.

4- For the Engine Coolant, what brand do you recommend and where to buy it? Or do you suggest I go OEM?

5- Does the 2014 TB have a DPF or just the simple EGR? Can't find any mention about it in the Owner Manual. Asked also the CASA if it has an EGR and if we can clean it and they were all clueless.

6- Drive Belt and Timing Belt. I'm willing to change these 2 as well because it's not worth the risk, I wish we got chains but fact is a fact. Does anyone know a good chevrolet shop where I can do the job correctly? Fronte was hesitating since the car is kinda new to them. Also any idea about the labor cost?

7- Transfer case 4x4 Oil. Even though I didn't do any offroading. Owner Manual suggests at 80K interval or 40K severe condition.

8- Car is kinda new. Do you suggest an under chassis inspection? Where to do it?

9- How to reset the Change Oil Reminder on the Dashboard?


Thanks in advance guys .