Question about 2005 Chevrolet Uplander

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Abs codes c0040 and c0041 front wheel speed control sensor and circuit

ABS lights is on with code c0040 and c0041 right wheel speed control sensor and circuit,shold I clean first harness and the wire before changing the sensor itself?Where is located the sensor and harness in order to find the connector and clean it?? Thanks

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  • Keep calm,tell me your problem and i solve it

    Ok, i took a few Tips all over the internet but if you see my question you can see that i already suggested to myself to clean it first.
    PROBABLE SOLUTION: code c0040 And 0041 ABS light on,before anything do it yourself, detouch the front wheel And you can see righ behind the hub a connector ,one way comes from inside ( do not pull,risk to disconnect the wire) And the other way you see clear coming from the engine side.Detouch the connector And clean it inside in both connectors,male And female, let it stay And dry up from the cleaning stuff you used than connect the two parts again,remount the wheel And pray that the reason why the light was on was because the wire And connector was durty!
    This is reccomended before replacing sensor or wire!
    FOR CHEVY UPLANDER 2005

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Will be located near the wheel hub. As long as there is no physical damage I would guess you will be replacing the sensor

Posted on May 19, 2013

  • Keep calm,tell me your problem and i solve it

    Thanks but i solved the problem cleaning the connector, it was 8 years of durty And dusty so after i cleaned it i runned the CAR And no more ABS light on!i knew it And i will suggest anyone before changing sensor or wiring to clean it first because 70% of the Times it is that the reason why the ABS light is on!

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Check magnet strip attached to back side of wheel bearing ...gm notorious for delamination or simply falling apart

Posted on Dec 22, 2019

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6 Suggested Answers

Anonymous

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Posted on Jan 02, 2017

Moe

  • 335 Answers

SOURCE: abs light on 2005 chev uplander...

You will have to check ABS codes to determine what the problem is.

Posted on May 02, 2009

ifixgm

Ray lehor

  • 29 Answers

SOURCE: 2003 chev. silverado2500hd, abs goes off, pulsates when stopping

Gm has tech service bulitens on this issue.First the abs sensors can and should be removed,inspect the sensor mounting surface for rust (clean w/ sandpaper) insp the sensor (note the sensor may break w/ trying to remove so be gentlel) if all looks ok reassemble and test drive. if unwanted abs still persists both hub bearings should be replaced (call your dealer and ask if a special policy exsits for this condition) usually no abs code w/ be present Good luck Ray..

Posted on Jun 18, 2009

Doug Keller

  • 208 Answers

SOURCE: My 1996 S-10 Blazer will not shift sometimes and

A faulty VSS (Vehicle Speed Sensor) or related wiring can cause both of your problems, trans and ABS. If the computer doesn't know the vehicle is moving, then it won't shift the trans. If the ABS controller sees wheel speed, but not vehicle speed, it will turn on the ABS light. The VSS is located in the rear transfer case housing. But remember, it may be the VSS, related wiring, a faulty speedo buffer (usually located in the dashboard), ECM, or even the reluctor on the transfer case output shaft. You may want to have a shop scan "data stream", or even have them diagnose the problem.

Posted on Jul 07, 2009

Anonymous

  • 54 Answers

SOURCE: 2003 silverado 39,ooo miles. due

make sure all tires are same size and inflated to correct pressure

Posted on May 04, 2009

Anonymous

  • 59 Answers

SOURCE: 2002 2WD CHEVY TAHOE ABS

Its possible that right wheel speed sensor is dropping out early making the truck think that wheel is locking up. That will activate the ABS and let the brake go on the right wheel which will make the vehicle pull slightly left. The only way to know for sure is to watch the wheel speeds on a scanner and see which one is drpping out first and replacing that speed sensor/bearing assembly.

good Luck

Posted on Sep 20, 2008

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Hi, Have an 07 AWD Equinox, all stability control traction control, ABS, AWD, lights off, I've cleaned the ground ,all still on, now I have code c0040, c0899, wheel speed sensors are new, my scanner shows...


Do yourself a favor an take it to a qualified repair shop . You need a factory scan tool to see these code's
DTC C0040 00 : Right Front Wheel Speed Sensor Circuit No Additional Information
DTC C0040 0F : Right Front Wheel Speed Sensor Circuit Erratic Signal
DTC C0040 18 : Right Front Wheel Speed Sensor Circuit Signal Amplitude Less Than Minimum

DTC C0899: Device Voltage Low
Circuit/System Description
The electronic brake control module (EBCM) monitors the battery voltage level available for system operation. A low voltage condition prevents the system from operating properly.

Circuit/System Testing
Measure the voltage at the battery terminals.
With scan tool, read the battery voltage in the EBCM data list.
? If less than 10 volts, test the ground circuit of the EBCM for high resistance. If the circuit test normal, test or replace the EBCM.
Go to Battery Inspection/Test and Charging System Test .

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Have a 2004 gmc yukon getting codes c0040, c0550,c0455,c0296 in the abs computer. Trac and abs light on as well as suspension control.


C0040 - Right Front Wheel Speed Circuit Malfunction
C0550 - ECU Malfunction - internal write / checksum malfunction
C0455 - Either:
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Abs on vr commodore light stays on solutions


Error logs are a great thing. They will help you find intermittent problems and start you off in a general direction of where a problem could be. There is a great level of detail on the justcommodores site on checking error codes logged by the engine management system, but this does not detail anything about the abs system. The abs warning light is not as common as the check engine warning light. Reading through the posts, I haven't found any detail on checking error codes logged by the abs system.

So here it is. For those of you familiar with checking the engine error codes, this procedure is so simple its not funny.

Basically, to check the engine error log, you bridge the 5th (ground) and 6th pins in the ODB connector under the steering wheel.

To check the ABS error log, using the same trusty calibrated paper clip, you simply bridge pins 5 and 12 of the connector.

To find pins 5 and 12, start at the top left hand corner. That is pin one. Going to the right, you count pin 2,3,4 etc. Once you get to the end, jump back to the start of the bottom left level of pins and keep counting. Pin 5 is about halfway along the top row, pin 12 is a little left of the middle in the bottom row.

Reading the error codes is the same procedure (counting the flashes), except now, the ABS light flashes (as opposed to the engine light when checking the engine codes).

The ABS log also uses code 12 firstly, with any errors logged shown after that. If no errors are logged, the 12 will flash again.

Error codes for the ABS error log (VR/VS) are as follows:

12 Diagnostic system operational
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23 Right hand front wheel speed sensor continuity fault
25 Left hand front wheel speed sensor fault
27 Left hand front wheel speed sensor continuity fault
28 Wheel speed sensor frequency error
31 Right hand rear wheel speed sensor fault
33 Right hand rear wheel speed sensor continuity fault
35 Left hand rear wheel speed sensor fault
37 Left hand rear wheel speed sensor continuity fault
41 Right hand front inlet solenoid valve circuit fault
42 Right hand front outlet solenoid valve circuit fault
45 Left hand front inlet solenoid valve circuit fault
46 Left hand front outlet solenoid valve circuit fault
55 Rear inlet solenoid valve circuit fault
56 Rear outlet solenoid valve circuit fault
61 Pump motor relay circuit fault
63 Valve relay circuit fault
71 ABS control module internal fault

The above guide has been verified on a VR/VS. Checking the error log on all models prior to VR/VS is the same for the engine log, and I would assume that the same can be said for the ABS log, would be happy if someone could verify this for me.

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Sounds like you need front wheel speed sensors. Replace the wheel bearings and sensors. May have an ABS unit fault, but more likely is both wheel bearings/speed sensors.

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