Top 20 2003 Buick Century Questions & Answers

Hi Chris Johnson, what engine is there. NO MILES TOLD(ODOMETER) a Gen 6 car! no engine told of these gen6 China 2.0 L L34 I4 2.5 L LB8 V6 3.0 L LW9 V6 North America 3.1 L L82/LG8 V6<< which one google vin decoder tell them and get the engine code and share it. "J" CODE IS LG8 LG8 is my guess, if USA aRE YAH? 405 is egr failing, can be hard to clean and fix it. 336 is crankshaft position sensor= CKP causes are CKP bad, or wires to it a mess or bad cam drive bad chain,or its guide or both mostly. or yes below.(rare to fail ever) yes the harmonic balancer does have the CKP tone wheel inside. if it looks ok is is ok, no bends there. the CKP sensor , senses those cut outs. to fire and inject fuel.

It isn't possible, you have to fix the problem, not find a way around it. The anti-theft system is there to stop exactly what you are trying to do. https://www.fixya.com/cars/r29887709-gm_passlock_security_system https://www.google.com/search?q=bypass+the+anti-theft+system+on+my+2003+Buick+century Videos say you can't but no.

Question edited for clarity. Question moved to model category. Check where the earth from those lights meets the bodywork. It is a known issue https://www.google.com/search?q=2003+Buick+Century.+My+license+plate+bulb+not+working

Did you check the fuses on your mystery vehicle? How about the refrigerant gas pressures, low side and high side?

https://www.fixya.com/cars/t22804106-torque_specifications https://www.fixya.com/cars/t13126328- torque_specs_head_bolts_2002_buick https://itstillruns.com/34l-torque-specs-7612234.html https://itstillruns.com/gm-3100-torque-specifications-7523925.html

There's only one evaporator core, so if you're getting cold on one side and not the other, then the blend door isn't working on the warm side. The actuator motor may be working but the door might not be moving.

https://www.youtube.com/watch?v=I-jksrwsZ_Q

This requires lamp replacement - and that means pulling the instrument cluster. I have done this on several cars, it has been easier than one may think. Read up or look for YouTube video for your car. Given the age and one has failed, pretty shortly all will statistically - so replace the rest. This repair takes me about 30 minutes - you may want to leave this to a shop mechanic.

Follow the sway bar from left to right and locate the bolts and unbolt them. Replace the bushings before replacing the new sway bar.

Using the RESET button

1. Adjust all tire pressures to the recommended kPa/psi.
2. Turn ON the ignition, with the engine OFF.
3. Press and hold the red RESET button located in the passenger side instrument panel fuse block.
4. The LOW TIRE indicator will flash 3 times, then turn off.
5. Use the scan tool in order to clear the TPM DTC.

I know there's a code where you can turn the key X number of times, or something like that ??????? No it can't , you need to take it to a qualified repair shop. Dodge , chrysler , jeep vehicles you can turn the key on - off - on - off - on three times an they show a coded in the odometer section of the instrument cluster . GM vehicles you need to plug in a scan tool . Your best bet , take it to a qualified repair shop.

I recently tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my jcb 3cx site-master. It would'nt move forward or reverse, engine was good both solenoids for forward and reverse worked, but still couldn't diagnose the problem. I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.comAll the best

Is the security light flashing?

don't put the pump nozzle in to far u will find it will fill quicker an for the car stalling tweak it a little

You could possibly have a problem inside the the under hood fuse box . ( Corrosion ) Looking at a wiring diagram both right an left high beams ground side splice together inside the fuse box . This ground or (circuit ) Comes out of the fuse box at connector 2 pin E6 Dark blue with a white trace wire. Do you know how to do voltage drop testing ? I will give you a training video on youtube on how to do it . Look at the diagram the left headlamp assembly pin G goes to the underhood fuse box on a pink wire going into the fuse box at connector 2 pin B7 . With a volt meter test for B+ voltage there and at the headlamp assembly pin G .. Watch this video it will show you how to test . Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

Before you did any repairs to address your overheating problem, did you check to see if your fans were working at all ? One way to check if they are working is by starting your vehicle and turning the A/C on, they should automatically start running. If they do not, begin to perform diagnosis to that electric circuit.

White smoke is coolant getting into the engine cylinder and sounds like a gasket blew!

get a second opinion doesn't add up from your discription

Push the trunk releses button inside the vehicle .

Powertrain Control Module (PCM) Front left side of the engine, inside the air cleaner assembly