Spark Plug - Torque Specification Revised

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NUMBER: 91-T-15

CORP.REF.NO: 036107

DATE: October 1990

SECTION: 6A


SUBJECT:
SERVICE MANUAL UPDATE - SPARK PLUG TORQUE (SPECIFICATION CHANGED)

MODELS/YEARS:
1988-89 CUTLASS CIERA/CUTLASS CRUISER, 1988-91 CUTLASS SUPREME AND 1990-91 SILHOUETTE MODELS


When installing spark plugs in the 3.1 L engine, use the following revised specification.

Cast Iron or Aluminum Heads, 15 N-m (11 Lb.Ft.)

Mark a reference to this bulletin in your copy of the following service manuals:


1991 Cutlass Supreme Pages 6D4 - 4, 5. 7

Silhouette Pages 6A4 - 20, 46 and 6D4 - 6


1990 Cutlass Supreme Pages 6D4 - 3. 4, 5

Silhouette Pages 6A4 - 17, 41 and 6D4 - 6


1989 Cutlass Supreme Pages 6A5-16 & 26 and 6D4-4

Cutlass Ciera/Cutlass Cruiser Pages 6A4-14 & 23


1988 Cutlass Supreme Pages 6A3-16 & 26 and 6D4-3

Cutlass Ciera/Cutlass Cruiser Pages 6A4 -16 & 12