Cutlass Ciera Cruiser L4-151 2.5L (1985)
Cylinder Head Bolts: All Technical Service Bulletins
Engine - Coolant Loss
SUBJECT
BROKEN CYLINDER HEAD BOLT/COOLANT LOSS
(NEW BOLT/GASKET)
MODELS/YEARS
1985-87 CALAIS AND CUTLASS CIERA WITH 2.5L
ENGINE VIN CODE R, U)
NUMBER:
87-T-78
CORP.REF.NO: 936105
DATE:
July 1989
SECTION:
6A
Figure 1
Major Tools Required:
Reversible Electric drill J 24460 and J-23699 Coolant System Pressure Tester J 36660 Torque-Angle Wrench J 38188 Head Bolt Kk:
J 38188-1 Cylinder Head Bolt Extractor J 38188-2 3/16" Drill Guide J 38188-3 3/16" Drill Bit J 38188-4 Center Drill Guide J 38188-5 Center Drill Bit
All dealers were recently shipped one (1) J 38188 Head Bolt Kit at no charge.
The following passenger vehicles equipped with a 2.5L engine may experience coolant loss due to broken cylinder head bolts:
1985-87 Cutlass Ciera with 2.5L engine (VIN Code R) 1985-87 Calais with 2.5L engine (VIN Code U)
The head bolts most susceptible to this condition are the center three located closest to the exhaust manifold, i.e. bolts #2, #3, and #6, see FIGURE 1. If
one & these three bolts is broken, replace all 3 bolts with new ones per the Application Table included in this bulletin.
