Loss of Communication with Brake Module (Reground EBCM Ground)


Filed Under (Cadillac, Chevrolet, GMC, Oldsmobile) by admin on 09-04-2013

Subject: ABS Light On, DTCs C0265, C0201, U1041 Set and/or Loss of Communication with brake module (Reground EBCM Ground)
Models: 2004-2007 Buick Rainier
2002-2006 Cadillac Escalade, Escalade EXT
2003-2006 Cadillac Escalade ESV
1999-2007 Chevrolet Silverado Classic
2000-2006 Chevrolet Suburban, Tahoe
2002-2006 Chevrolet Avalanche
2002-2007 Chevrolet TrailBlazer, TrailBlazer EXT
2003-2006 Chevolet SSR
1999-2007 GMC Sierra Classic
2000-2006 GMC Yukon, Yukon Denali, Yukon XL
2002-2007 GMC Envoy, Envoy XL, Sierra Denali Classic
2004-2005 GMC Envoy XUV
2002-2004 Oldsmobile Bravada

Condition Some customers might remark that the ABS gentle is on. Upon additional inspection, DTCs C0265 and C0201 may be set in the brake module. It is also attainable for DTC U1041 to set in different modules. There can also be a loss of communication with the brake module.
Cause A poor connection at the EBCM ground is causing pointless replacements of brake modules.
Correction DO NOT REPLACE THE brake module Carry out the next steps to enhance the connection of the EBCM Floor:
1. Remove the EBCM Ground. The EBCM Ground is positioned on the body beneath the driving force’s facet door. If a number of grounds are discovered on this location, the EBCM ground will be recognized as the heavy (12-gauge) wire.
2. Clear the world, front and back, utilizing a Whiz Wheel.
3. Set up the bottom, then the washer and then the bolt to the frame. Necessary: It is important to use the bolts, washers and nuts specified in this bulletin. These parts have been identified because of their conductive finish.
4. Install a washer and nut to the back facet of the frame. Tighten Tighten the nut to 9 N·m (seventy nine lb in).
5. Cover the front and back aspect of the restore area using Rubberized Undercoating. An additional test may be made to ensure an excellent connection for the Battery Cable to Body ground. It’s potential for this ground to trigger similar symptoms with the ABS as described above.

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Comments posted (27)

Intermittent ABS/Brake! lights…Took the Blazer to a dealer to get the code read, they told me this code meant that the BPMV motor had shorted and this caused the EBCM to blow. To an electronics expert this sounded like complete baloney, if the motor had indeed shorted and caused this kind of fault, it certainly wouldn’t be intermittent (10% of the time, roughly). The second dealer I brought it to also said I needed an EBCM, that he could make the fault appear/clear by tapping on the unit. Anyone experienced w/ ABS have any advice? BTW, C0265 = EBCM relay/amplifier circuit open…
This is a 2001 Blazer…

My ’92 Honda Prelude’s rear brake lights will not work when the brake pedal is engaged. In addition, the instrument panel brake light warning indicator remains in the “on-position” while the car is running. However, I have replaced brake lights, fuses, and checked all visible wire connections leading to the rear brake light cluster module. All other rear lights work including turn signal, parking, reverse and emergency indicators.

What is the terms of ECM, ECU, ECC, TCM, EBCM? I’m wondering if you can help me to learn these.

T073 …. PCM – EBTCM/EBCM Pulse Width Modulation Signal Fault
i think its a computer problem

i looked it up and this is what the code means also it says traction disabled
anyone knows how to fix this probelm

can it be bypassed? and how much would it cost for a new or used one

How much fuel was used to prevent the lunar module from crashing into the moon?

It is common knowledge that the moon has no atmosphere and has 1/6th earth gravity.
Jason T:

Masses of lunar module:
Ascent module: 10,024 lb or 4,547 kg
Descent module: 22,375 lb or 10,149 kg
Total: 32,399 lb or 14,696 kg

The forces on craft are its weight (downwar) and thrust (upward). The difference between these forces is net force, which should be directed upward, for, clearly, the craft requires an upward acceleration in order to decrease downward speed.

F(net) = ma = T − mg.


T = ma + mg = m(a+g).

Of couse, g is in this case 1.6 m/s². Effective acceleration a can be found from

assume v initial is 28.3 m/s^2 (from another yahoo question)

a = vo² / 2h = 28.3² / 350 = 2.288 m/s².


T = m(a +g) = 14696kg ( 2.288 + 1.6) = 57138 kgm/s^2.

That means the lunar module needs to burn 57000 kg of fuel per second to brake…it could take a couple of hundred of thousand pounds of fuel to prevent it from crashing into the moon…

To escape moon gravity..just use your number of 6 million /6 = 1 million pounds

I have a 3 year old vehicle with very dark brake fluid. I was going to bleed them myself but don’t have a scan tool to communicate with the ABS module. Would it be cheaper to take it to the dealership or buy a GM scantool myself?

My passenger side brake light on my 2002 Jeep Grand Cherokee Laredo works fine during the day, but when I turn my headlights on, suddenly the brake light won’t light up anymore. Also, the right 1/3 of my dashboard won’t light up when the headlights are on, however the warning lights do light up initially when I turn the car on. Could the problems be related? I don’t know anything about cars so I’ll have to take it in to fix. Is this likely to be something expensive to have done?

the abs module has 4 brake lines that connect to it. if i disconnect them i was told i can still drive it..?.. these lines have no fluid just pressure? or will i have no brakes with no module?

changed out the abs brake module which has 6 lines going in to it. now the brakes are real spongy

please i really need to know the difference, my opinion i think their is no difference between both, but i need another preson’s opinion. please and thank you

It is an emblem that functions to turn on and illuminate white with the headlight and shine red when the brakes are applied. I came with a control module as well i’m installing it on a Hyundai accent, So it will be a fourth brake/parking light.
It has three wires coming from the emblem one is the ground and the other two are for the parking and brake light. The module has two matching wires for ground and the brake but not for parking light wire.

Have done plugs, brakes, ignition module, starter, alternator, etc. But do you need a technician to do the pick-up, to replace the old one. Does it require a tune up after? I used to do the points and condenser but never have done a pick-up. Thanks
I Cr 13;8a
8 cylinder, 400 cu in. a real guzzler. LOL.

I want to jump a wire from the positive brake light power wire to another closed circuit to introduce a ground and shut off the primary circuit when the brakes are applied. The primary closed circuit will simulate a ‘turbine’ spool up, which I wish to interrupt when the brake lights come on while introducting a similar secondary ‘turbine’ spool down circuit to complete the turbine sound effect of spooling up and down.

I bought a used 91 BMW 520i and there’s an electronic device located on the center console next to the e-brake. I think someone swapped out the motor for an M5 series motor, because it’s not stock. I wasn’t sure if it was something for the radio, or a performance part. It’s broken whatever it is.

(The car is also built on German specs.)

My 1999 Dodge Dakota Sport v6 was working fine, then next time I turned it on all the lights on the dash panel were lit up. The cruise control light, gas light, parking brake light are all lit.(I dont even have cruise control) Turning the car off and on again does not fix it.
What could be the problem and how do I fix it? If it is a simple fix, what parts would I need and where would they be located on the vehicle?

The rear antilock brake light is coming on in my 1994 Toyota 4Runner. What part of the anti lock brakes does this moniter, and is there anything that might be causing the light to come on without the antilock brakes actually not working? Thanks

I have a 2003 Mazda 6i 4 door sedan. I went today and took my state ( Washington ) emission test and I failed. The code that came up is P0703: Brake Switch “B” Circuit. How do I fix this and why would I fail a emission test because of a brake switch?
Where is the brake switch located so I can check and make sure the connector did not fall off.

Control module, modulator unit, wheel sensor etc… What do they exactly do? tyvm =]

I have a 1994 F-350 with a 460. I have tried numerous times to locate the electronic control module with no luck. It is not behind the kick panels, instrument panel, or behind the glove box. The truck is just about junk at this point to me and with everything ripped out of it I still can’t find the computer. Does anyone out there have a clue?

Dodge Ram 1500 , speedometer , and odometer not working ABS light and brake light are on as well What could be the problem ?

I have a 95 Buick Park Avenue. Every time I start it, the brake warning light shows up on the dash. Along with the annoying ding-ding-ding sound. The brakes and emergency brake are both fine and working good. But the light still comes on and the sound continues the entire time the vehicle is running. Is there anything I can do? Whether it be fixing or disabling a wire or removing a fuse, etc? I can’t stand to drive with that annoying sound any more!!! PLEEEZ HELP!!!

After awhile it will stop idling or when i press the brake petal in. The same day i changed my tranny fluid. The new pcv valve also started making a large humming sound.

My mom backed into a pole (twice) and cracked the tail lights.
It rained, water got into the tail light
Now the lights don’t work
I have tried replacing the bulbs.
turn signals work
terminal for brake light bulb is corroded

Turn signals flashing fast and now no brake/turn signals in rear at all.

2001 s-10, 4 x 4, zr2 package

its the dim driving brake lights that dont work. What fuse do i check?

Also the gas cap wont pop where is that fuse at?

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