2009 Chevrolet TrailBlazer - Answered Questions & Fixed issues

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

Hello. in most cases this is caused by a bad ignition switch in the column. this should be covered under your factory warranty

all fuses all boxes checked. cab and engine bay? well we scan all modern cars first./ it will show DTC errors. like dead cluster communications? or? do not skip scans on cars, or go broke guessing endlessly.for sure.

to 12 year late jackers why not just check them all. be faster. or read the manual lost the glove box users guide,chapter fuses? its free. https://eautorepair.net/Marketing/Default.asp

I did some testing, fuel pump was bad but not the problem. Turns out I had a bad power train relay. I jumped it and it fired right up and ran at idle smother than it has in a long time

NO CAR year TOLD AT ALL HYJACKER. TO 2009 AND SAME PROBLEM WITH lJBDJ \Chevrolet TrailBlazer some cars have FLAP that only protects fill nozzle from cracking body paint. so is not at all part of EVAP buy a new cap. if still fails buy the tank filler assembly from chevy, parts. nobody can see your flap , no posted photo of it, and matters hug.

right hand side of the engine looking at vehicle from Hood has a little tiny vacuum line coming from plenum to fuel pressure regulator regulator has hard steel lines connected to it leading to firewall if this doesn't help Google year make model and regulator