SERVICE MANUAL UPDATE-SEC.6A SPARK PLUG TORQUE SPECS

SERVICE MANUAL UPDATE - SECTION 6D Subject: SPAPK PLUG TORQUE SPEC. (CHANGED SPECIFICATION)

Model: 1988-91 6000, GRAND PRIX, SUNBIRD, Affected:FIREBIRD AND TRANS SPORT MODELS WITH 3.1L

SERVICE MANUAL UPDATE

SECTION 6D

NOTE: Per notice in the Service Manual, it is important, especially on aluminum cylinder heads, to allow engine to cool before removing the spark plugs to avoid thread damage.

When installing spark plugs in the 3.1L engine use the following revised specification in the Service Manuals listed below:

Cast Iron or Aluminum Heads, 15 N.m (11 lbs. ft.)

1991 Pontiac 6000 Pages 6D4-3, 4, 5 Pontiac Grand Prix Pages 6D4 - 4, 5, 7 Pontiac Sunbird Pages 6D4 - 8 Pontiac Firebird Pages 6A2 - 31 And 6D4 - 7, 9 Pontiac Transport Pages 6A4 - 20, 46 And 6D4 - 6

1990 Pontiac 6000 Pages 6D4 - 3, 5 Pontiac Grand Prix Pages 6D4 - 3, 4, 6 Pontiac Firebird Pages 6A2 - 30 Pages 6D4 - 7, 8 Pontiac Transport Pages 6A4 - 17, 41 And 6D4 - 6

1989 Pontiac 6000 Pages 6A4 - 14, 23

1988 Pontiac 6000 STE and Supplement Pages 6A5 - 16, 23

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.