Envoy 2WD V8-5.3L (2007)
Electronic Brake Control Module: Customer Interest
Brakes - ABS Lamp ON/DTC's C0265/C0201/U1041 Set
TECHNICAL
Bulletin No.: 04-05-25-002E
Date: March 11, 2009
Subject:
ABS Light On, DTCs C0265, C0201, U1041 Set and/or Loss of Communication with Brake Module (Reground EBCM Ground)
Models
Supercede:
This bulletin is being revised to add step 2 to the procedure and update the Parts and Warranty Information. Please discard Corporate Bulletin Number
04-05-25-002D (Section 05 - Brakes).
Condition
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.
Cause
A poor connection at the EBCM ground is causing unnecessary replacement of brake modules.
Important:
The EBCM ground is different for each application. Refer to the list below for the proper ground reference:
^
Midsize Utilities = Ground 304
^
SSR = Ground 400
^
Fullsize Trucks and Utilities = Ground 110
Correction
Important:
Do not replace the brake module to correct this condition. Perform the following repair before further diagnosis of the EBCM.
Perform the following steps to improve the connection of the EBCM Ground:
1. 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.
2. If the original fastener has a welded on nut, remove the nut from the frame, and if required, enlarge the bolt hole to accommodate the new bolt and nut.
3. Clean the area, front and back, using a tool such as a *3M(TM) Scotch-Brite Roloc disc or equivalent.
