Q: Central locking is no longer working.

asked by on

The remote locking had just stopped working on my trailblazer. I have two sets of remotes and neither of them are working with the car currently. It was totally random just came back from a trip and it wouldn't lock but had been fine the rest of that day. I have tried re-programming the remotes to the car as I was t sure if the dog standing on the door button may have caused it to disconnect somehow however this doesn't work and I have today tried replacing the remote batteries and trying to reprogam again but this hasn't worked either. The doors were locking/unlocking with the button on the door panel but this is no longer unlocking now either. The trunk doesn't have a key entry point so it currently will not open. Do you have any idea what could be wrong with it? and is this easier to do ourselves? If not, what sort of price it is likely to cost to repair it?

My car has 212720 miles.
My car has an automatic transmission.

It sounds like your vehicle has a problem with the body control module, mainly because you said the power locks are also inoperative from the door panel. The first thing I would suggest is to check the fuses, then have the body control module scanned. This might give you a fault code to work with or to help diagnose the issue. It may simply be a blown fuse. Beyond that, not much can be done without a test light, wiring schematic, and a good working knowledge of automotive electrical systems. At that point, I would recommend having the locking problem diagnosed by a professional technician.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Central locking is no longer working.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I changed the battery and now my windows go up and down by themselves and I have a clicking noise from the door

Hello, thank you for writing in. When these types of electrical issue occur after changing the battery, there may be several things you have to try to rectify the issue. One would be making sure the battery is hooked up...

Q: Will the throttle body parts match

The only way to guarantee compatibility, fit, function, durability and service life, and so forth, of any vehicle part, is to buy the OEM part as vended by a GM dealer in your case. If you elect to use other...

Q: Error code P0014

Hello, thank you for writing in. The OBD-II error code P-0014 is typically related to an over adjusted timing issue detected by the camshaft sensor as opposed to a damaged sensor itself, which leads me to think that it's either...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...