Under the passenger seat and No, a novice should not bother unless it's absolutely necessary because their are available P.C.M. tunes available like "Trifecta Tune"
Edit: No, it isn't. It's in front of the under hood junction box on the driver side. It's really easy to get to and remove. The PCM is the larger of the two metal bricks under the black cover in front of the fuse block. Pull the red pins toward the driver side fender, the depress the tab just right of the pin while pulling the gray lever to remove the wires. When you reinstall, be sure to place gray terminal with gray port and black with black.
where is the bcm located on a 2005 chevy cobalt
where is the bcm located on a 2005 chevy cobalt
how to remove rear struts on 2005 chevy cobalt
where is the fuse for 06 chevy cobalt windshild wiper
where is the shift solinoid located on a 2005 chevy cobalt. and how do you change it
in the trunk
located in the trunk under a cover
there is not one it is a sealed trans \
in the oil pan
The sensor is located on top of the transmission, and should be easy to unscrew. It is recommended that you change both input and output at the same time.
CTS is a cadillac model In the cobalt manual its referred to as ECT, or Electronic Coolant Thermometer It is located in the back right of the motor next to the thermostat. If you remove it, coolant will come out of that, but you can replace the new without loosing more than a half cup
With a 07 chevy cobalt key