Spark Plug - New Design

91pontaic03

Bulletin Number: 91-6-34
Reference Number: 106501R
Publish Date: 4/91


Subject: NEW DESIGN SPARK PLUG (SERVICE INFORMATION)

Models
Affected: 1989-91 BONNEVILLE MODELS WITH 3800 (VIN C ENGINES)


This bulletin is to inform technicians of a change in the service replacement spark plug for the 1989 through 1991, Bonneville models.

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.