Was told a while back that my headlight(s) had a short. However, when I had them replaced today the bulbs worked. A few hours later, my car had NO power at all, and there was a loud ticking coming from the back fuse box. When said fuse was removed, still no power and ticking started in front fuse box.
Without trouble shooting ,would only be guessing . Could be any number of thing's . You have no idea the complexity of the electronic's on this vehicle . All the different control modules , serial data communication network . You probably don't even know what's happening just turning the key to start the start position .
For ignition switch power modes refer to Body Control System Description and Operation. Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the starter relay coil supply voltage input terminal of the powertrain control module and the coil side of the starter relay. Placing the ignition in the START position sends a message to the engine control module (ECM)/powertrain control module (PCM) requesting engine start. If the ECM/PCM has determined that the transmission is in Park or Neutral and theft is not active, it will ground the control circuit of the starter relay. Battery positive voltage will then flow through the switch side of the starter relay to the S terminal of the starter solenoid, cranking the engine. For remote vehicle start (RVS) information, refer to Keyless Entry System Description and Operation.
Power Mode Master
This vehicles body control module (BCM) functions as the power mode master (PMM). Refer to Power Mode Description and Operation for a complete description of power mode functions.
Power to many of this vehicle's circuits are controlled by the module that is designated the power mode master (PMM). This vehicle's PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.
Serial Data Power Mode Master
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits. The 3-wire Ignition Switch table below illustrates the state of these inputs in correspondence to the ignition switch position:
Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs Off/Run/Crank, Accessory, and ignition 1, to distinguish the correct power mode. The ignition 1 circuit is also routed to the Run/Crank relay for relay controlled power feeds during the appropriate power mode. The BCM, after determining the desired power mode, will activate the appropriate relays for that power mode.
The first step in the diagnostic procedure chart would be to hook up the Tech2 - factory scan tool an check all the modules on the vehicle for DTC'S - diagnostic trouble code's .
Your best bet have it towed to a qualified repair shop .
SOURCE: headlights flicker all the time
Hi, my name is ricky and im 24 yrs old and from Bronx, N.Y . I bought my 03 impala in 04 and i had the same problem in 2007 in which that clicking noise happens. The headlights flicker, and even the gauges inside the car would flicker at times. It has nothing to do with fuses or a relay, please dont spend money on that b.s. like i did..lol I will try my best to explain what i did so that you can save some money and time. READ EVERYTHING AND USE ADVICE AT YOUR OWN RISK.
1st of all - I went to a junk yard/auto salvage yard to find a USED part that i needed. Often there are good parts from cars that have been totalled.
2nd- What i asked for was a Body Control Module. This controls most of the electric issues you are having and costed me about 50 dollars compared to a new one that was over $200 and reached up to $500.
3rd- I went head first under the steering column and found where the BCM was located. Poke around to find it cause it is def. there, hidden well. It doesnt take special skill to remove it or find it.
4th-Replace the BCM, but be advised that after you do this, your car might not crank over.My car did crank over because i installed a automatic starter previously so i could have started it with the remote start.
5th- you MUST take the car to a chevy shop so they can Program your car to the body control module this costed me about $250.
All together this information has to help you in someway.
If you have further questions or would like to make a comment, then e-mail me at " [email protected] "
I hope this helps...im not saying it is a 100 percent guarantee for you, but i had this same problem recently and this was the answer to my problem. By the way, never buy a american car again or a GM product for that matter...Kudos
SOURCE: how do I replace a headlight bulb in a 2006 aveo
you can access the bulbs from inside the engine compartment. the socker turns about a quarter turn to remove it. do NOT touch the bulb with your fingers as that will shorten the bulb life. you may have to remove the battery to change the one on that side.
SOURCE: 88 Chevy truck runs then dies for no reason
do a test to see if the coil is ok and check the red and white wire coming from the back of the distributor for corrosion if those fail test the injectors for pulse
SOURCE: I own a 2007 equinox.
It is possible that when the place doing the oil change attempted to replace the headlight bulb that they might have disconnected a wiring harness or shorted something out when they attempted to disconnect wiring to replace the bulb. Now I believe the Equinox has electric steering so an electrical problem could cause the power steering loss. I would check all the fuses in the fuse box and verify that there are not any that are burned out. If all the fuses are good then you will need to take it to the dealership and have them inspect it. You could also visually look under the bumber where the headlight is and see if you notice any loose or disconnected wiring connections. Hopefully it is something as simple as a fuse. Let me know if you have any other questions.
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