Engine - Poor Low Speed Driveability/Spark Knock
Bulletin: 91-6E-17ADate: Nov. '92
Ref.No.: 91-307-6E
Corp.Ref.No.: 276110
SUBJECT:
DRIVEABILITY IMPROVEMENTS (REPLACE ESC AND/OR PROM)
MODELS AFFECTED:
1991 ROADMASTER
THIS BULLETIN CANCELS AND SUPERSEDES SERVICE BULLETINS 91-6E-17 AND 92-6E-12. ALL COPIES OF 91-6E-17 AND 92-6E-12 SHOULD BE DISCARDED. THIS BULLETIN ALSO CONTAINS A NEW PART NUMBER FOR A "FEDERAL" PROM.
CONCERN:
Some owners of 1991 Roadmasters may comment on low speed driveability concerns or engine detonation (spark knock).
CORRECTION:
Replace the ESC and PROM with the parts listed below:
DESCRIPTION PART NUMBER
ESC Module 16175099
Broadcast Code (BARC)
Broadcast Scanner Part Model
Code I.D. Number Year Application
AYMJ 5941 16165912 1991 5.0L L03
California emissions
BCDU 1391 16181390 1991 5.0L L03
Federal emissions
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
Labor Operation No.: T0500
Labor Time: 0.4 hour