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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.
What else can I help you with?
Where is the bcm on a 2005 Chevy Cobalt?
where is the bcm located on a 2005 chevy cobalt
Where is the BCM on 2005 Chevy Cobalt?
where is the bcm located on a 2005 chevy cobalt
Remove and replace struts on 2005 Chevy Cobalt?
how to remove rear struts on 2005 chevy cobalt
Where is the windshield wiper fuse located in a Chevy Cobalt?
where is the fuse for 06 chevy cobalt windshild wiper
How to change shift solenoid on 2005 Chevy Cobalt?
where is the shift solinoid located on a 2005 chevy cobalt. and how do you change it
Where is the battery located in a 2007 Chevy Cobalt?
in the trunk
Where is the battery located in a 2008 Chevy Cobalt?
located in the trunk under a cover
Where is theTransmision dipstick located on a Chevy Cobalt?
there is not one it is a sealed trans \
Where is the oil drain plug located on 2007 Chevy Cobalt?
in the oil pan
How do you replace a input turbine sensor on a Chevy Cobalt?
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.
Where is the cts sensor on a 2008 Chevy Cobalt located?
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
How do you unlock a 2007 Chevy Cobalt?
With a 07 chevy cobalt key
