LeSabre V6-231 3.8L VIN C SFI (1990)
Spark Plug: Technical Service Bulletins
Spark Plug - New Design
Bulletin:
91-6E-15
Date:
April '91
Ref. No.:
91-141-6E
Corp. Ref. No.:
106501R
SUBJECT:
NEW DESIGN SPARK PLUG (SERVICE INFORMATION)
MODELS AFFECTED:
1989-91 LESABRE MODELS WITH 3800 (CODE C) ENGINE
1989-90 PARK AVENUE/ULTRA MODELS WITH 3800
(CODE C) ENGINE
1990-91 PARK AVENUE/ULTRA, REGAL, RIVIERA AND
REATTA MODELS WITH 3800 T.P.I. (CODE L) ENGINE
This bulletin is to inform technicians of a change in the service replacement spark plug for the 1989 through 1991, LeSabre, 1989 and 1990 Park
Avenue/Ultra with the 3800 (Code C) Engine, 1990 and 1991, Park Avenue/Ultra, Regal, Riviera/Reatta with the 3800 T.P.I. (Code L) Engine.
When servicing vehicles listed above, technicians may use the new Service Replacement Spark Plug R45LTS6, Service Package Number 5614224.
Engines produced after March 1, 1991 will have the new R45LTS6 Spark Plug installed. When replacing spark plugs in vehicles with the old design
Spark Plug Number R44LTS6, all spark plugs may be replaced with the new Service Spark Plug R45LTS6.
NOTE:
Do not mix the two spark plug numbers in a vehicle.
As service stock of the R44LTS6 Spark Plug is exhausted, stock will be replaced with the new Spark Plug R45LTS6.
Parts are currently available from GMSPO.
