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Message: <blockquote data-quote="AuroraGirl" data-source="post: 27534" data-attributes="member: 9417"><p> <table style='width: 100%'><tr><td><strong>Subject:</strong></td><td><strong>ABS Light On, DTCs C0265, C0201, U1041 Set and/or Loss of Communication with Brake Module (Reground EBCM Ground)</strong></td></tr></table><p></p><p></p><table style='width: 100%'><tr><td><strong>Models:</strong></td><td><strong>2004-2007 Buick Rainier</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2002-2006 Cadillac Escalade, Escalade EXT</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2003-2006 Cadillac Escalade ESV</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>1999-2007 Chevrolet Silverado Classic</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2000-2006 Chevrolet Suburban, Tahoe</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2002-2006 Chevrolet Avalanche</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2002-2007 Chevrolet TrailBlazer, TrailBlazer EXT</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2003-2006 Chevolet SSR</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>1999-2007 GMC Sierra Classic</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2000-2006 GMC Yukon, Yukon Denali, Yukon XL</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2002-2007 GMC Envoy, Envoy XL, Sierra Denali Classic</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2004-2005 GMC Envoy XUV</strong></td></tr></table> <table style='width: 100%'><tr><td></td><td><strong>2002-2004 Oldsmobile Bravada</strong></td></tr></table><p></p><p></p><p></p><hr class="bbc-hr bbc-hr--3" /><p><strong>This bulletin is being revised to update model years. Please discard Corporate Bulletin Number 04-05-25-002C (Section 05 -- Brakes).</strong></p><p></p><hr class="bbc-hr bbc-hr--3" /><p><a href="https://gm.saturn.team/Chevrolet/Chevy_C_Silverado___2WD/2002/bulletins/1988903#ss1-1988903" target="_blank">[H3]Condition[/H3]</a></p><p></p><p>Some customers may comment that the ABS light is on. Upon further inspection, DTCs C0265 and C0201 may be set in the brake module. It is also possible for DTC U1041 to set in other modules. There may also be a loss of communication with the brake module.</p><p></p><p><a href="https://gm.saturn.team/Chevrolet/Chevy_C_Silverado___2WD/2002/bulletins/1988903#ss2-1988903" target="_blank">[H3]Cause[/H3]</a></p><p></p><p>A poor connection at the EBCM ground is causing unnecessary replacements of brake modules.</p><p></p><p><strong>Important: </strong>The EBCM Ground is different for each application. Refer to the list below for the proper ground reference:</p><p></p><table style='width: 100%'><tr><td>   • </td><td>Midsize Utilities = Ground 304</td></tr></table> <table style='width: 100%'><tr><td>   • </td><td>SSR = Ground 400</td></tr></table> <table style='width: 100%'><tr><td>   • </td><td>Fullsize Trucks and Utilities = Ground 110</td></tr></table><p></p><p></p><p><a href="https://gm.saturn.team/Chevrolet/Chevy_C_Silverado___2WD/2002/bulletins/1988903#ss3-1988903" target="_blank">[H3]Correction[/H3]</a></p><p></p><p><em>DO NOT REPLACE THE BRAKE MODULE.</em></p><p></p><p>Perform the following steps to improve the connection of the EBCM Ground:</p><p></p><ol> <li data-xf-list-type="ol">Remove the EBCM Ground. The EBCM Ground is located on the frame beneath the driver's side door. If multiple grounds are found in this location, the EBCM ground can be identified as the heavy (12-gauge) wire.</li> <li data-xf-list-type="ol">Clean the area, front and back, using a Whiz Wheel®.</li> <li data-xf-list-type="ol">Install the ground, then the washer and then the bolt to the frame.</li> <li data-xf-list-type="ol"><strong>Important: </strong> It is important to use the bolts, washers and nuts specified in this bulletin. These parts have been identified due to their conductive finish.</li> <li data-xf-list-type="ol">Install a washer and nut to the back side of the frame.</li> <li data-xf-list-type="ol"><strong>Tighten</strong><br /> Tighten the nut to 9 N·m (79 lb in).</li> <li data-xf-list-type="ol">Cover the front and back side of the repair area using Rubberized Undercoating.</li> </ol><p>An additional check can be made to ensure a good connection for the Battery Cable to Frame ground. It is possible for this ground to cause similar symptoms with the ABS as described above.</p><p></p><p><a href="https://gm.saturn.team/Chevrolet/Chevy_C_Silverado___2WD/2002/bulletins/1988903#ss4-1988903" target="_blank">[H3]Parts Information[/H3]</a></p><p></p><table style='width: 100%'><tr><th><p style="text-align: center"><em>FULL-SIZE TRUCKS, SUVs AND H2</em></p> </th><th></th></tr><tr><th><p style="text-align: center">Part Number</p> </th><th><p style="text-align: center">Description</p> </th></tr><tr><td><p style="text-align: center">11588564</p> </td><td><p style="text-align: center">Bolt</p> </td></tr><tr><td><p style="text-align: center">15650962</p> </td><td><p style="text-align: center">Washer</p> </td></tr><tr><td><p style="text-align: center">15672934</p> </td><td><p style="text-align: center">Nut</p> </td></tr><tr><td><p style="text-align: center">12378398<br /> (in Canada, 10952414)</p> </td><td><p style="text-align: center">Rubberized Undercoating --</p> </td></tr></table></blockquote><p></p>