Top 20 2001 Buick Century Questions & Answers

This is the bolt, but the answer is the size of the socket that fits it. If you don't have a full set of sockets and wrenches, doing job is impossible. If it is oversize, and I don't think it is, you can get larger specialized tool from Autozone for free and just a small returnable deposit. https://www.google.com/search?q=2001+Buick+Century+Custom+harmonic+balancer+bolt ..

P0xxx codes apply to all vehicles using the OBD2 system, P1xxx codes are manufacturer specific. Your codes mean... P0753 = Shift Solenoid "A" Electrical. P0502 = Vehicle Speed Sensor "A" Circuit Low. This is possibly 2 separate issues as one is a transmission fault code and the other is a vehicle speed sensor issue. Get the speed sensor repaired first as sometimes the bad signal from the sensor can confuse the transmission electronics causing the transmission to behave strangely.

They are only supposed to come on IF the A/C is running. If you are not getting power to the correct area of the relay, it may be the ignition switch is worn out,

Question edited for clarity. Question moved to sub category. The windows have a breaker, but it may be the switch or a break in the cabe between the door and the body. https://fuse-box.info/buick/buick-century-1997-2005-fuses-and-relays https://www.google.com/search?q=2001+Buick+Century.+power+window+relay+location ..

have they checked the PCM/ECM fuses? some might be bad or the computer itself. does the car run poorly, bad fuel economy? you could go the the emission check place to have it checked. for alot less money it will tell you if it is computer related before spending more for a mechanic to analyse it .$15 in WA State.

There's this website www.reliable-store.com They have books on ALL vehicles. it covers wiring diagrams, electrical diagrams, fuse diagram, torque specs, PCV, error codes, fault codes, service info, repair info, parts info, owner's/service/repair/parts/maintenance manuals etc everything totally.. I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

My Buick had an ABS problem and since I had new brakes installed my mechanic disconnected the wiring. You still have full brakes and they will work fine but the ABS part won't work. Since i did not want to spend a lot of money I drove it that way for about three years. ABS is just an addition to help but not all cars have it.

Wow man that sounds to me like a temperature sensor that could be going out you might want to check the last job that you did to ensure that everything is put together the way it's supposed to be by the factory sometimes people do mechanic work and as you're going in to fix something something else breaks that they don't pay attention to you must pay full attention and everything in your engine bay

Take some picture on your phone and show them along with the vin number they should be able to tell from that.

You lost the drive gear in transmission. Check fluid for a burnt smell or a grayish tint this would indicate a burnt gear pack

go to a wreckers / junk yard and but window regulator assemblies and replace then faulty ones

go to the wreckers / junk yards and get good replacement parts there is no difference between ford and GM technically so if you are a good ford technician , fixing a GM product will be no problem

Sounds like u could have another leak possibly, coolant or oil getting on the belt, also look for the belt tensioner, when they go bad they will squeak really loud If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_2094e122cc46f24c

get the company service and repair manual from the given link and solve the problem your self it will save your time and money http://toolsnyou.com/

Check the switch

I can't diagnose unless you can do some testing? This is part of diagram for automatic hvac. At the blower motor, terminal B is voltage, terminal A is ground. Use a test light, check voltage and ground with hvac on, Have to check when problem is ongoing. If good voltage and ground with no blower action, suspect the blower motor is faulty. Of course, if your missing voltage or ground, have to track that circuit. Faulty blower motors may run intermittently. When problem is ongoing, hvac on, you can try tapping blower motor with screwdriver handle see if it starts running, if it does, I suspect the blower motor has a problem. Check hvac trouble codes, where applicable.

Bad water pump.

Make sure battery has a full charge and battery connections all good. Check fusible links where applicable. Any component that doesn't work and is fuse protected, not only check the fuse, check the fuse circuit for voltage, use a test lite. The wiring diagram is for starter circuit, you can see the fuses. Any testing for starter motor, make sure tranny is in park or neutral and parking brake is set. It is possible to jump crank relay to see if starter motor will crank, but, that doesn't mean it will start. Make sure vehicle can't move.

You have a pull tab for your lights turn them on. Turn the knob clockwise. It should shut off

It's the anti-theft system . (SECURITY ) Keeps vehicle from being stolen ! Important: If the wrong ignition key is used in an attempt to start the vehicle, a Data Trouble Code (DTC) will be set and the Body Control Module (BCM) will not send a fuel enable or starter enable message to the Powertrain Control Module (PCM) for three minutes even if the correct ignition is used. The Pass-Key II?® Theft Deterrent system prevents vehicle theft by disabling the starter motor and fuel system. If the Body Control Module (BCM) dose not identify the use of the correct ignition key to start the vehicle, the (BCM) will communicate a message to the Powertrain Control Module (PCM) which will disable the crank relay and fuel delivery to the engine. When the (BCM) identifies the use of the correct ignition key (resistor pellet) to start the vehicle, the (BCM) will send a fuel enable and starter enable message to the (PCM) which will allow the vehicle to start. Your best bet would be have it towed to a qualified repair shop !