Antilock Warning/Traction Off Warning Lights - Stay ON
File In Section: 5 - BrakesBulletin No.: 53-50-17
Date: February, 1996
Subject:
Amber Antilock Warning Light and (if Equipped) Amber Traction Off Warning Light Stays On (Apply Sealant/Grease)
Models:
1995 Buick LeSabre, Park Avenue
1995 Oldsmobile Ninety Eight, Eighty Eight
1995 Pontiac Bonneville
Built Prior to June 1, 1995
Condition
Some owners may comment that the amber antilock warning light and (if equipped) amber traction off warning light stays on. Also, the antilock brake system and (if equipped) traction control system may become inoperative. The following conditions will occur:
^ Amber antilock warning light and (if equipped) amber traction off warning light turns on and stays on. The red brake warning light stays off.
^ EBTCM Diagnostic Trouble Code (DTC) 61 will be set.
Important:
THIS CONDITION IN NO WAY AFFECTS THE OPERATION OF THE POWER BRAKES.
Cause
Fluids trapped in the wire harness in the area below the windshield washer reservoir. This allows the fluids to come in contact with the ground splice for the Pressure Modulator Valve (PMV) motor (S129) and to be wicked down CKT 1150 to the 4-way brake PMV connector C2. Sufficient fluids in the connector interfere with the pump run signal, causing a DTC 61 to set. This condition DOES NOT damage the Electronic Brake Traction Control Module (EBTCM).
Correction
Seal splice S129 with electrical moisture sealant, P/N 11515174. Cut sealant into approximately a 2" x 2" square. Position seam in flexible conduit down or slit the bottom of the conduit in area of splice S129 and apply electrical connector grease, P/N 12377900, to terminals in connector C2.
Procedure
1. Remove air cleaner and windshield washer reservoir. For 3800 super charged engines, if equipped, remove the auto level control air compressor.
2. Remove flexible conduit covering the main harness 6 inches in both directions from the point where the wires break out to the PMV motor connector C2 (see Figure 1).
3. Locate splice S129 (see Figure 2) and remove the tape covering it. It is located about 2 inches forward from the point where the wires break out of the wiring harness for the connector C2.
4. Open connector C2.
Caution:
TO PREVENT PERSONAL INJURY, WEAR HEARING AND EYE PROTECTION FOR THE NEXT STEP
Using compressed air and a blow gun, blow air down terminal E (see Figure 3) on the harness side of connector C2 until no fluid can be seen being expelled from the wire at S129. This will take several minutes.
5. Thoroughly dry splice S129 and the wires 2 inches in both directions.
6. Thoroughly clean the wires 2 inches in both directions of splice 5129 with an alcohol wipe (available locally) and allow to completely dry.
7. Cut a 2" x 2" piece of electrical moisture sealant. Apply the moisture sealant patch to the splice by folding it over the wires. Make sure that there is at least a 1/8 inch gap between any parallel wires to ensure that the patch can seal between the wires (see Figure 4). Press the patch together with your fingers or duck bill pliers, making sure that the wires are completely sealed.
8. Return the harness to its original condition making sure that the conduit seam in the area of the splice is on the bottom of the harness or slit the bottom of the conduit and make sure that any tape used to secure the conduit will allow any trapped fluids to drain.
9. Using a brush such as an acid brush (available locally), thoroughly coat both the male and female terminals of connector O2 with the electrical connector grease.
10. Reconnect connector 02 and reassemble the washer fluid reservoir, air cleaner and, it necessary, the electronic level control pump.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use as shown.