20 Most Recent 2009 Chevrolet TrailBlazer Questions & Answers

Question edited to add maker. Question moved to Model category. Videos showing how to change and therefore showing the wiring. https://www.google.com/search?q=2009+Chevy+Trailblazer+replace+fan+clutch Specifically fan clutch wiring https://www.google.com/search?q=2009+chevy+trailblazer+fan+clutch+wiring+diagram&rlz=1C1QJDB_enCA643CA644&sxsrf=ALiCzsbnCw_kC_PvIZbz7yy8dllM0FakXg:1659286378460&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj9q6y5y6P5AhWnJDQIHQcZBXUQ_AUoAXoECAEQAw&biw=1920&bih=937&dpr=1 ..

Check drive shaft hanger bearing and u joints.

The gauge is more then likely bad or going bad !

The traction control uses the ABS wheel speed sensors (1 on each wheel - usually in the wheel bearing assembly). The speed sensor is for your speedometer. Do you have an ABS light on too?

P0128 us the code for a faulty engine coolant temperature.

dextron vi or 6

The most common cause of low beam failure on trailblazer, buick, and GMC, are the micro relay under hood in fuse box. One relay is for the low beams and the other one (beside it) is for the cooling fan. It is part number 15016745 and has four prongs on it. Just swap the cooling fan relay, with the low beam relay. This will tell you if it is bad. Then see if low beams work, If they do its a bad relay. Good-Day! Make sure to swap the relays back so that the cooling fan is working ok!

Possibly a bad ignition switch.

possibly a dead cell in the battery. I've had this problem in the past.

Clean the throttle body clear codes

try checking the temperature sensor, the one for the computer, also it may be the injector tubes under the intake they often crack and leak fuel under the intake manifold.

You need to check the wirings again and replace the dimmer switch.

you probably have a bad relay or a shorted wire somewhere. Bactrack the wiring from the seat to the dash. You may also have a bad fuse.

that is the exhaust pipe gasket . it is on the front pipe going to the exhaust manifold