Astro Van M V6-262 4.3L VIN B TBI (1991)
Electronic Brake Control Module: Technical Service Bulletins
Brakes - (4WAL) Lamp ON/False Codes Set
Number:
91-72-5
Section:
5
Date:
September 1990
Corp. Bulletin No.: 065017
Subject:
FALSE CODES 41, 42, 43, 44, 46, 48, 51, 52, 53 AND 54
Model and Year:
1990-91 M/L AND 1991 4-DOOR S/T UTILITY VEHICLES WITH 4WAL
TO:
ALL CHEVROLET DEALERS
Some 1990-91 M/L vans and 1991 4 door S/T utility vehicles may experience a condition in which the ANTI-LOCK light is illuminated and the
anti-lock feature of the brake system is deactivated without a true malfunction of the 4WAL module.
The condition may cause one or any combination of the following trouble codes to be falsely set and stored in the Electro Hydraulic Control Unit
(EHCU) memory.
