Chevrolet Impala - Recent Questions, Troubleshooting & Support - Page 5
2014 Chevy Impala radio saying 'loc' any tricks to getting it unlocked.
It sounds like it needs a code. Did you disconnect the battery? I have answered this question so many times, I wrote it as a Tip.
Tip & How-To about Car Audio & Video
Need a Vehicle Radio Code?
There are only three ways to do this.
1. Take it to your local local dealership for your make of vehicle. You will need to provide the registration document and they will give you the code for free based on the vehicle VIN Number.
2. Look for a small white sticker in the glove compartment or the centre console. When the car is new, this sticker is supplied with the manual with those instructions.
3. You pay an online Radio Code Decoding company. Many of them say 'Free', but most charge about $15 or £12 UKP. The major sites are trustworthy and will work with you, or refund if the code doesn't work. The sites need the Serial Number of the radio which is either engraved to the radio chassis, or on a sticker at the rear or sides hidden from view.
This link is for Fiat, change the Search Query to your make.
https://www.google.com/search?q=Fiat+radio+code
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Posted by ADMIN... on May 19, 2022
I also found this
The radio will display "LOC" indicating the Theftlock system is activated
. Step 2: Press and hold preset buttons 1 and 4 for ten seconds. (If you don't have a fourth preset button, press and hold presets 2 and 3.) The radio will display a three digit number.
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2000 Chevrolet Impala blower motor work from 1-4 but not on 5th speed why?
The blower motor relay is energized when the Blower Motor Control is set to the High position. This removes the blower motor resistors from the circuit and battery voltage is then applied directly from the HVAC BLO fuse (RH IP Accessory Wiring Junction Block) to the blower motor though the relay switch contacts. The blower motor then runs at high speed.
HVAC Blower Controls Circuit Description
The blower motor is a variable speed motor. The motor operates at a higher rate when voltage is increased to the maximum level.
The blower motor resistors reduce the voltage supplied from the A/C FAN fuse (LH IP Accessory Wiring Junction Block) when the blower control is set at low and medium speeds (speeds 1-4). The blower motor relay is energized when the Blower Motor Control is set to the High position. This removes the blower motor resistors from the circuit and battery voltage is then applied directly from the HVAC BLO fuse (RH IP Accessory Wiring Junction Block) to the blower motor though the relay switch contacts. The blower motor then runs at high speed.
2010 Chevrolet Impala ABS issues....
if abs flickered hook up scanner and get code ---new hubs dont mean free from defects or properly installed ---also check the abs connectors for damage or corrosion
Changing oil pan gasket on 02 impala ls 3.8
The engine does have to be raised. The bolts are not easy to get to until the engine is lifted and the engine mount is removed. I'm doing this job right now and the book time is around 5 hours.
Why do doors unlock but can't be locked?
Professional Auto-Tech Expert writes
- Jeff Armer Mar 29, 2022
- Won't lock ? power door locks ? with key fob,door switches ? more info.
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Jeff Armer Mar 29, 2022
Power locks are controlled by door modules and BCM, hook up a scan tool an check for codes .
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Jeff Armer Mar 29, 2022
Could be door lock relay problem .
DTC B3125
Circuit/System Description
When the door lock switch is place in to the LOCK position, ground is applied through the switch to the body control module (BCM). The BCM then applies a voltage through the door lock relay control circuit to the coil side of the lock relay in the body electrical center (BEC). The relay then engages and applies voltage to all the door lock assemblies.
DTC B3135 00: All Door Lock Circuit
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Where is the pcv valve for my 1995 Chevy impala
Watching the picture of the car.I think that the engine is a V8,don`t remember which side of the engine but in the top of the valve covers you are going to see a hose that comes from the carburator or TBI,at the end of that hose goes the PCV valve and inserts in to the valve cover.
Why did I/P lights and heat stop working?
Are these the lamps not working?
Interior Lamps Dimming
The second group of interior lighting includes lamps which may be dimmed. This group uses a combination of class 2 controlled illumination and incandescent lamps:
• Ashtray lamp
• Door switches and window switches
• Fog lamp switch
• HVAC control head assembly
• Outside rear view mirror switches
• Radio
• Steering wheel controls
• Instrument panel cluster (IPC)
• Traction control switch
• Headlamp switch
• Hazard switch
• Heated seat switch
• The rear view mirror lamps
• Surveillance mode switch (SEO, 9C1/9C3)
The RH instrument panel (I/P) fuse block supplies battery positive voltage to both the coil and normally open switch contacts of the park lamp relay. When the body control module (BCM) energizes the park lamp relay, current flows from the park lamp relay switched contacts through the REAR PARK LP fuse to the I/P dimming switch. When dimming is selected, by moving the I/P dimming switch, all incandescent back lighting lamps (see schematics) and the BCM are provided with a variable voltage through the instrument panel lamp supply voltage #1 circuit. The incandescent back lighting lamps are then grounded at G201, G203 and G302. The BCM then applies a message signal to the class 2 circuit to the IPC and radio. The class 2 displays then dim to the level set by the I/P dimmer switch. When the I/P dimmer switch is moved from MIN to MAX, all class 2 displays and all incandescent back lighting respond from minimum intensity to maximum brightness.
Parade mode may be selected by manually turning on the park lamps during daylight conditions. The front park lamp circuit supplies voltage the HVAC assembly for a park lamp on input, and the display will become full bright. The BCM applies a message signal to the class 2 circuit to the IPC and radio commanding the displays to become full bright. The surveillance mode switch (SEO) overrides this feature.
Battery Rundown Protection / Inadvertent Power
The body control module (BCM) controls the lighting system through circuits that enable the park lamps, head lamps and fog lamps as well as the interior lamps. The BCM opens these enabling circuits 20 minutes after the ignition switch is turned OFF with no subsequent lamp switch activity. If the ignition switch is turned to any position other than OFF, or if a lamp switch is activated, during this 20-minute period, the timer will reset for another 20 minutes.
Dash lights an heat have nothing in common, two separate problems.
Hooking up a scan tool an checking for stored DTC'S -diagnostic trouble codes in the BCM would be first step in diagnostic procedures.
Interior Backlighting Inoperative
Step
Action
Yes
No
Schematic Reference: Interior Lights Schematics
1
Did you perform the Lighting System Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Lighting Systems
2
Turn the ignition switch to the RUN position.
Turn the door switch to the ON position.
Turn the headlamp switch to the HEAD position.
Do all of the interior lamps illuminate?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Is only one lamp inoperative?
Go to Step 4
Go to Step 5
4
Repair the open or high resistance in the inoperative lamp power supply or ground circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring System.
Did you complete the repair?
Go to Step 6
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5
Important: Perform the set up procedure for the body control module (BCM). Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
Did you complete the replacement?
Go to Step 6
--
6
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
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