its on wheel some are at trans axel you can go to autozone.com and look it up in location link sorry for brief message to hard to jump back
The 2003 Trailblazer speed sensor is mounted on the transmission. It is on the passenger side of the output end.
The speedometer sensor on a 2003 Chevy Tahoe Z71 is located in the engine compartment. It is on the transfer case.
Check your vehicle speed sensor. It controls your RPM's and your Speedometer. Hope this helps.
location for 2003 chevy trailblazer coolant temperature sensor
the dashboard cluster could have broken. That happened to my 2004 trailblazer and I had to get it replaced
underneath the alternator,
The blower resistor for a 2003 Trailblazer is located under the passenger side of the dash.
On a 2003 Chevy Trailblazer, the speed sensor is typically located on the transmission. Specifically, it can be found on the driver's side of the transmission case, near the output shaft. To access it, you may need to remove some components for better visibility and reach. Always refer to a repair manual for detailed instructions and safety precautions.
it would be on the air intake tube, it has a 4 wire connector
The 2003 Trailblazer (GMT360 platform) uses a PCM and it is located on the drivers side of the engine. It has three connections bolted to it.
The 2003 Chevrolet trailblazer power control module is located in the fuse box. The fuse box is located in the engine compartment.
There are two. One on the exhaust manifold and one just after the Cat. www.trailvoy.com Trailblazer enthusiasts website!