The oil should be changed every 6 months or 3,000 miles, wich ever comes first.
A common Chevrolet Trailblazer accessory would be things such as replacement parts. One of the most often purchased include headlights and brakes, as these are required to work by law.
weekly
Passwords should be changed every month.
According to my dealer, it should be changed at 150,000 km.
When it is dirty.
When it is dirty.
When its old
weekly
If you do not drive it often, I would recommend getting it changed every 3 months. That is what many mechanics tell you to do.
30000 miles
The engine oil should be changed every 3000-5000 miles
They will normally last at least 75,000 + miles. Check your owners manual.