This answer will vary with what's wrong and which shop looks at it.
A eaton fuller 18 speed roadranger gearbox is used
Engine diagrams can be used as guides.. An engine diagram to a 2003 Chevy Trailblazer can be found in its maintenance and repair manuals.
6.5 Liters
NO.
The 2003 Trailblazer speed sensor is mounted on the transmission. It is on the passenger side of the output end.
Dexron III Automatic Transmission Fluid
The fact that you ask the question tells me that like 99% of the people out there, you will need to take your car to a transmission professional for diagnosis and repair. Working on modern A/T is not a job for a novice.
location for 2003 chevy trailblazer coolant temperature sensor
Where is the input aux for a 2003 trailblazer
how do you set the clock on a 2003 chevrolet trailblazer
buy a haynes repair book at your local parts store it has detailed instrutions
How do I reset the service engine light on a 2003 Chevy Trailblazer?