COLD CLIMATE SPECIAL POLICY ADJ. 3.1L ENG. PISTON PLATING
SUBJECT: COLD CLIMATE SPECIAL POLICY ADJUSTMENT 3.1 LITER ENGINE PISTON PLATING WEAR
YEAR/ MODEL: 1989 CUTLASS SUPREME and 1990 SILHOUETTE
CONDITION
General Motors has determined that some 1989 Oldsmobile Cutlass Supreme model vehicles built with the 3.1L LHO (VIN T) engine and some 1990 Oldsmobile Silhouette model vehicles built with the 3.1L LG6 (VIN D) engine may develop a condition of premature wear of the pistons due to low adhesion of the tin plating. Evidence of this condition would be a cold engine knocking noise at low ambient temperatures. This condition will not lead to engine failure and is typically limited to cylinders #2, #4, and #6.
VEHICLES INVOLVED
Involved are 1989 Oldsmobile Cutlass Supreme model vehicles built with the 3.1 L LHO (VIN T) engine and 1990 Oldsmobile Silhouette model vehicles built with the 3.1 L LG6 (VIN D) engine within the following breakpoints, (built from Start-of-Production to End-of-Production):
YEAR MODEL MODEL NAME ENGINE VIN VIN THROUGH & CODE BEGINNING INCLUDING ---- ----- ---------- ---------- --------- --------- 1989 W Cutlass Supreme T S.O.P. E.O.P. 1990 U Silhouette D S.O.P. E.O.P.
Where S.O.P.---) Start Of Production and E.O.P.---) End Of Production.
SPECIAL POLICY ADJUSTMENT
This special policy covers the condition described above on vehicles in specific cold climate states for a period of six (6) years or 72,000 miles, whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. If piston replacement is required due to this condition, an engine replacement should be made at no charge to the owner rather than replacement of individual pistons. This special policy adjustment applies ONLY to repair required as a RESULT of the described condition; it does not cover other conditions which may necessitate a partial engine replacement.
OWNER NOTIFICATION
Owners in specific cold climate states will be notified of this special policy on their vehicles by Oldsmobile Division (see copy of the owner letter included with this bulletin).
STATES INVOLVED IN OWNER NOTIFICATION
The following is the list of states defined as "cold climate states":
Alaska (AK) Massachusetts (MA) Rhode Island (RI) Colorado (CO) Michigan (MI) South Dakota (SD) Connecticut (CT) Minnesota (MN) Utah (UT) Delaware (DE) Montana (MT) Vermont (VT) Dist. of Columbia(DC) Nebraska (NE) Virginia (VA) Idaho (ID) New Hampshire (NH) West Virginia (WV) Illinois (IL) New Jersey (NJ) Wisconsin (WI) Indiana (IN) New York (NY) Wyoming (WY) Iowa (IA) North Dakota (ND) Maine (ME) Ohio (OH) Maryland (MD) Pennsylvania (PA)
OWNER REIMBURSEMENT
Claims for reimbursement on previously paid repairs to replace pistons (or partial engine) as a result of premature piston wear due to low adhesion of tin plating, are to be submitted by August 31, 1994 (Connecticut, Virginia and Wisconsin allow requests for reimbursement to be made up to two years after the repair expense was paid). Repairs must have occurred within six (6) years of the date the vehicle was originally placed in service, or 72,000 miles, whichever occurred first. Owners must submit original documentation that reasonably confirms the amount of unreimbursed repair expense, a description of the repair, the date of the repair, and the person or entity who performed the repair.
Claims for customer reimbursement on previously paid repairs are to be submitted according to the Warranty Claim Information instructions. Use the "Owner Reimbursement" labor operation and list all owner expenses concerning previous repairs in the net items column of the warranty claim.
SERVICE PROCEDURE
SERVICE PROCEDURE FOR CUTLASS SUPREME GOODWRENCH ENGINE REPLACEMENT -------------------------------------------------
1. Disconnect battery cables.
2. Remove hood assembly.
3. Remove air cleaner and duct assembly.
4. Drain engine coolant.
5. Disconnect upper and lower radiator hoses, heater hoses and coolant recovery reservoir.
6. Disconnect T.V. cable at transaxle (accessible from engine compartment).
7. Remove exhaust crossover pipe.
8. Remove ECM cover.
9. Remove serpentine belt.
10. Disconnect both upper engine mounts and rotate engine forward. Refer to service manual for rotating and locking engine into position, figure 5 in section 6A5.
11. Remove Manifold Absolute Pressure (MAP) sensor and bracket.
12. Remove generator assembly.
13. Remove throttle control cable and shield at throttle body.
14. Remove brake vacuum pipe at plenum and booster.
15. Remove throttle control cable at plenum bracket.
16. Remove power steering pump from engine and securely reposition at side. Do not disconnect power steering hoses from pump.
17. Remove wiring harness tie straps and disconnect upper wiring harness connectors.
18. Disconnect fuel lines at rail and bracket.
19. Disconnect upper electrical grounds at transaxle.
20. Disconnect vacuum modulator line at transaxle (accessible from engine compartment).
21. Disconnect oxygen sensor electrical connector.
22. Rotate engine back into normal position.
23. Raise vehicle.
24. Drain engine oil.
25. Remove oil filter.
26. Remove right engine splash shield.
27. Disconnect front exhaust pipe from manifold.
28. Disconnect electrical connections at compressor, ignition module and speed sensor.
29. Remove A/C compressor to pencil brace.
30. Remove flywheel cover.
31. Remove starter.
32. Disconnect lower ground strap at transaxle.
33. Remove torque converter bolts.
34. Remove A/C compressor mounting bolts and securely reposition compressor.
35. Remove transaxle support bracket bolts at transaxle.
36. Remove front engine mount nuts at frame.
37. Remove both lower bell housing bolts.
38. Lower vehicle.
39. Install engine lifting device.
40. Remove remaining bell housing bolts.
41. Install transaxle support.
42. Remove engine.
43. Remove flywheel.
44. Mount removed engine assembly on engine stand and remove lifting device.
45. Remove generator mounting bracket and pencil brace.
46. Remove intake plenum with throttle body attached.
47. Remove ignition module assembly with spark plug wires attached.
48. Remove throttle body heater pipe.
49. Remove both rocker arm covers.
50. Remove heater hose pipe at intake manifold and cylinder head.
51. Remove intake manifold.
52. Remove engine torque strut bracket.
53. Remove both exhaust manifolds.
54. Remove upper engine wiring harness.
55. Remove serpentine belt tensioner.
56. Remove balancer mounting bolt and balancer, using tool J 24420-B.
57. Remove front engine mount bracket.
58. Remove Electronic Spark Control (ESC) knock and crank sensors.
59. Remove engine block heater, if equipped.
60. Remove oil filter adapter.
61. Remove fuel line bracket.
62. Remove coolant temperature sensor.
63. Remove transaxle support bracket.
64. Remove water pump pulley.
65. Remove water pump.
66. Remove old engine from stand.
67. Mount new engine (P/N 12513153) on stand.
68. Install new engine oil level indicator (dipstick) tube assembly on new engine (packaged loose with new Goodwrench engine).
69. Install new engine oil level indicator (dipstick) into the indicator tube (packaged loose with new Goodwrench engine).
70. Install water pump and new gasket (P/N 10182374). Tighten bolts to 10 N.m (89 lb. in.)
71. Install water pump pulley.
72. Install transaxle support bracket.
73. Install coolant temperature sensor.
74. Install fuel line bracket.
75. Install oil filter adapter, including oil pressure sensor and new adapter gasket (P/N 12337894). Tighten connector through adapter to 39 N.m (29 lb. ft.).
76. Install engine block heater, if equipped.
77. Install ESC knock sensor. Tighten sensor to 19 N.m (14 lb. ft.).
Note: Be sure threads are clean.
78. Install crankshaft sensor. Refer to service manual for inspection and installation procedure, section 6E3-C4.
79. Install front engine mount bracket. Tighten bolts to B5 N.m (63 lb. ft.).
80. Install crankshaft balancer. Refer to service manual for details of installation procedure, section 6A5.
81. Install serpentine belt tensioner. Tighten bolts to 54 N.m (40 lb. ft.).
82. Install upper engine wiring harness.
83. Install exhaust manifolds and new gaskets (P/N's R.H. 10078991, L.H. 14100625). Refer to service manual for details of cleaning and installation procedure, section 6A5.
84. Install engine torque strut bracket.
85. Install intake manifold. Refer to service manual for cleaning and installation procedures, section 6A5.
86. Connect heater hose pipe at intake manifold and cylinder head.
87. Install both rocker covers. Use the rocker cover gaskets that came with Goodwrench engine. Refer to service manual for details of installation procedure, section 6A5.
88. Install throttle body heater pipe.
89. Install ignition module assembly with spark plugs wires attached. Tighten bolts to 25 N.m (19 lb. ft.)
90. Install intake plenum with throttle body attached and new plenum gaskets (P/N 10104430). Connect coolant and vacuum hoses. Refer to service manual for cleaning and installation procedure.
91. Install generator mounting bracket.
92. Install engine lifting device and remove engine assembly from stand.
93. Install flywheel. Apply GM thread locker (GM P/N 12345382 or equivalent) to all flywheel bolts and tighten bolts to 70 N.m (52 lb. ft.).
94. Install engine assembly in vehicle.
95. Install upper engine/transaxle mounting bolts. Tighten bolts to 75 N.m (55 lb. ft.).
96. Remove support at transaxle.
97. Remove engine lifting device.
98. Raise vehicle.
99. Install lower engine/transaxle bolts. Tighten bolts to 75 N.m (55 lb. ft.).
100. Install front engine mount nuts at frame. Tighten nuts to 45 N.m (34 lb. ft.).
101. Install transaxle support bracket bolts at transaxle. Tighten rear bolts to 83 N.m (61 lb. ft.) and front bolts to 43 N.m (35 lb. ft.).
102. Install A/C compressor and mounting bolts. Refer to service manual details of installation procedure, section 1 B.
103. Install torque converter bolts. Tighten bolts to 60 N.m (44 lb. ft.).
104. Connect lower ground strap at transaxle.
105. Install starter motor.
106. Install flywheel cover. Tighten bolts to 10 N.m (89 lb. in.).
107. Install rear A/C compressor to starter pencil brace. Refer to service manual for details on installation procedure, section 1 B.
108. Connect front exhaust pipe at manifold with new seal (P/N 10094825). Tighten bolts to 47 N.m (35 lb. ft.).
109. Install right engine splash shield.
110. Install oil filter.
111. Lower vehicle.
112. Rotate engine to forward position.
113. Connect oxygen sensor electrical connector.
114. Connect vacuum modulator line at transaxle.
115. Connect upper electrical grounds at transaxle.
116. Connect fuel lines at rail and bracket.
117. Connect upper engine wiring harness connectors and install tie straps.
118. Install power steering pump mounting bolts. Tighten bolts to 27.5 N.m (20.5 lb. ft.).
119. Install throttle control cable bracket at plenum.
120. Install brake vacuum pipe at plenum and booster.
121. Install throttle control cables at throttle body.
122. Install generator assembly.
123. Install MAP sensor and bracket.
124. Rotate engine to normal position and connect both engine mounts.
125. Install serpentine belt.
126. Install ECM cover.
127. Install exhaust crossover pipe. Tighten bolts to 25 N.m (18 lb. ft.).
128. Connect T.V. cable to transaxle.
129. Connect upper and lower radiator hoses and heater hoses.
130. Install coolant recovery reservoir.
131. Install air cleaner and duct assembly.
132. Install hood.
133. Install engine oil.
134. Reconnect battery cables.
135. Refill coolant system with new coolant. Add two (2) engine cooling system sealer pellets from package, P/N 3634621, to the radiator. Coolant must be mixed with equal amount of water to provide proper protection.
136. Start engine to verify no fluid leaks.
137. Reset clock.
SERVICE PROCEDURE FOR SILHOUETTE GOODWRENCH ENGINE REPLACEMENT
1. Disconnect battery cables.
2. Remove air cleaner assembly.
3. Drain cooling system.
4. Discharge/recover refrigerant from the A/C system. Refer to service manual for discharging A/C system, section 1 B.
5. Disconnect ECM harness at ECM and push through to engine compartment.
6. Remove necessary ECM harness fasteners to chassis and lay harness on engine assembly.
7. Remove throttle and T.V. cable at TBI unit.
8. Disconnect fuel lines at TBI unit.
9. Remove transaxle shift linkage and bracket at transaxle.
10. Remove radiator and heater hoses at engine side.
11. Remove L.H. engine compartment crossbrace with washer reservoir assembly.
12. Remove engine wiring harness from block connector at left hood hinge and lay on engine assembly.
13. Remove engine torque strut to engine.
14. Raise vehicle.
15. Remove transaxle cooler lines at radiator.
16. Remove front L.H. and R.H. wheel locks.
17. Remove front L.H. and R.H. tire and wheel assemblies.
18. Remove L.H. and R.H. tie rod ends to knuckle.
19. Remove L.H. and R.H. control arm ball joint from steering knuckles. Refer to service manual for details of removal procedure, section 3C.
20. Remove L.H. and R.H. axle shaft from transaxle. Refer to service manual for details of removal procedure section 4D.
21. Position axle/hub assembly up and wire to strut.
22. Remove intermediate steering shaft pinch bolt and shaft from steering gear.
23. Remove A/C compressor suction/discharge fitting at rear of compressor and cover to prevent damage/contamination.
24. Remove starter wiring at starter assembly and engine ground.
25. Remove starter assembly and A/C compressor brace from engine.
26. Remove transaxle converter shields.
27. Remove flywheel to converter attaching bolts.
28. Remove exhaust pipe to exhaust manifold bolts and springs.
29. Remove R.H. inner fender shield and power steering hose retaining clamps at R.H. frame rail.
30. Remove engine ground strap to lower tie bar. Refer to service manual, figure 9 in section 6D5.
31. Remove engine mount to frame retaining bolts and washers.
32. Lower vehicle and support engine/transaxle for removal from vehicle onto stand J 36295.
33. Remove engine/transaxle frame to body retaining bolts and raise vehicle.
34. Remove serpentine belt guide cover and belt.
35. Remove generator wiring, generator and support bracket.
36. Remove power steering pump and lines from engine. Wire pump assembly to frame.
37. Remove A/C compressor support brace and compressor assembly.
38. Remove front and rear coolant by-pass pipes from engine.
39. Remove water pump from front cover.
40. Remove spark plug wiring at plugs and wire routing retainers.
41. Remove TBI wiring and hoses and TBI unit from intake manifold.
42. Remove engine wiring harness from engine.
43. Remove distributor retainer and distributor assembly from engine.
44. Remove both rocker arm covers.
45. Remove intake manifold assembly.
46. Remove serpentine belt tensioner from engine front cover.
47. Remove torque strut and A/C compressor mounting bracket.
48. Remove torsional damper bolt from crankshaft.
49. Remove torsional damper from crankshaft using J24420-B.
50. Remove exhaust crossover pipe from R.H. and L.H. exhaust manifolds.
51. Remove R.H. and L.H. engine exhaust manifolds.
52. Remove ignition coil and bracket.
53. Remove Electronic Vacuum Regulator Valve (EVRV) and bracket.
54. Remove oil filter adapter and sensor assembly.
55. Remove Electronic Spark Control (ESC) knock sensor.
56. Remove engine coolant temperature sensor from cylinder head.
57. Remove engine to transaxle bracket bolts and bracket.
58. Remove engine block heater, if equipped.
59. Remove engine to transaxle retaining bolts.
60. Separate engine from transaxle.
61. Remove engine front mount bracket bolts at engine block.
62. Remove flywheel from engine.
63. Clean all gasket surfaces on new engine (P/N 12513152).
64. Install flywheel to new engine, apply GM thread locker (P/N 12345382 or equivalent) to all flywheel bolts and tighten bolts to 70 N.m (52 lb. ft.)
65. Install engine to front mount bracket. Tighten three (3) front bolts to 80 N.m (59 lb. ft.) and one (1) side bolt to 110 N. m (80 lb. ft.).
66. Install engine to transaxle retaining bolts. Tighten bolts to 75 N.m (55 lb. ft.).
67. Install engine to transaxle bracket. Refer to service manual for details of installation procedure, section 6A.
68. Install new oil level indicator tube (dipstick) on new engine (packaged loose with Goodwrench engine).
69. Install new engine oil level indicator (dipstick) into indicator tube (packaged loose with Goodwrench engine).
70. Install engine block heater, if equipped.
71. Install engine coolant sensor.
72. Install ESC knock sensor. Tighten sensor to 19 N.m (14 lb. ft.).
Notice: Be sure threads are clean.
73. Install oil filter adapter, including oil pressure sensor and new adapter gasket (P/N 12337894). Tighten connector through adapter to 39 N.m (29 lb. ft.).
74. Install EGR EVRV and bracket to cylinder head.
75. Install ignition coil and bracket to cylinder head.
76. Install R.H. exhaust manifold and new exhaust manifold gasket. Refer to service manual for details of installation procedure, section 6A4.
77. Install L.H. exhaust manifold and new exhaust manifold gasket. Refer to service manual for details of installation procedure, section 6A4.
78. Install exhaust crossover pipe. Tighten nuts to 25 N.m (18 lb. ft.).
79. Install torque strut and A/C compressor mounting bracket at engine.
80. Install torsional damper to crankshaft. Refer to service manual for details of installation procedure, section 6A4.
81. Install serpentine belt tensioner assembly to front cover. Refer to service manual for details of installation procedure, section 6A4.
82. Install intake manifold assembly and new gasket (P/N 12520756). Refer to service manual for details of installation procedure, section 6A4.
83. Install both rocker arm covers. Use the rocker cover gaskets that came with Goodwrench engine. Refer to service manual for details of installation procedure, section 6A4.
84. Install distributor assembly and new 0-ring seal (P/N 1977935). Refer to service manual for details of installation procedure, section 6D4. Note: Do not tighten retaining bolt at this time.
85. Install TBI unit and new gasket (P/N 14092220). Refer to service manual for details of installation procedure, section 6E2.
86. Install engine wiring harness and vacuum harness.
87. Install spark plugs and spark plug wires.
88. Install water pump and new gasket (P/N 10182374). Tighten bolts to 10 N.m (89 lb. in.).
89. Install front and rear coolant by-pass pipes.
90. Install A/C compressor assembly and brace. Refer to service manual for details of installation procedure. section 1 B.
91. Install power steering pump and lines. Refer to service manual tor details of installation procedure, section 3B1.
92. Install generator assembly, brace and wiring.
93. Install serpentine drive belt and cover.
94. Install engine/transaxle on frame into vehicle by raising stand J 36295 up to vehicle. Tighten bolts to 140 N.m (103 lb. ft.).
95. Install power steering line retaining clamps and R.H. inner fender shield.
96. Install exhaust pipe to exhaust manifold bolts, springs and new exhaust manifold pipe seal (P/N 10094825). Refer to service manual for details of installation procedure, section 6F.
97. Install flywheel to converter attachment bolts. Tighten bolts to 60 N.m (44 lb. ft.).
98. Install converter cover.
99. Install starter assembly including all wiring and A/C compressor brace.
100. Install A/C compressor suction/discharge fitting at compressor.
101. Install intermediate steering shaft to gear and pinch bolt.
102. Install R.H. and L.H. axle assemblies to transaxle.
103. Install L.H. and R.H. steering knuckle to ball joint pinch bolt.
104. Install L.H. and R.H. tie rod ends to steering knuckle.
105. Install L.H. and R.H. tire and wheel assemblies and wheel locks.
106. Install ground strap at lower tie bar from engine harness.
107. Install transaxle cooler lines at radiator.
108. Lower vehicle.
109. Install engine torque strut to engine.
110. Install engine wiring harness to block connector at left hood hinge.
111. Install L.H. engine compartment crossbrace with washer reservoir.
112. Install radiator and heater hoses to engine.
113. Install transaxle shift bracket and linkage to transaxle.
114. Install throttle and T.V. cables at TBI unit.
115. Install fuel lines at TBI unit.
116. Install necessary ECM harness fasteners to chassis.
117. Install ECM harness through cowl and connect at ECM.
118. Refill coolant system with new coolant. Add two (2) engine cooling system sealer pellets from package, (P/N 3634621), to the radiator. Coolant must be mixed with equal amount of water to provide proper protection.
119. Install engine oil.
120. Install air cleaner assembly.
121. Connect battery cables.
122. Check engine timing and tighten distributor retainer. Refer to service manual section 6D4.
123. Check and adjust toe.
124. Recharge A/C system. Refer to service manual for recharging procedure, section 1 B.
125. Start engine and verify no fluid leaks.
26. Reset clock.
PARTS INFORMATION
To ensure parts are obtained as soon as possible, order them from General Motors Service Parts Operations (GMSPO) on a C.I.O. order, with NO special instruction code, but order on an advise code (2).
PARTS INFORMATION FOR 1989 CUTLASS SUPREME GOODWRENCH ENGINE REPLACEMENT 3.1 L LHO (VIN T)
Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 12513153 Goodwrench Engine 1
10182374 Water pump gasket 1
12337894 Oil filter adapt 1 gasket
10104430 Plenum gasket kit 1
14100625 Exhaust manifold 1 gasket-left hand
10078991 Exhaust manifold 1 gasket-right hand
10094825 Seal, exhaust 1 manifold pipe
1052753 Coolant, Eng. (bulk) 6.3 qts.
25010908 Oil filter (PF-51) 1
12345612 Engine oil, 5W-30 4.5 qts. (w/filter)
3634621 Sealer, Engine coolant system 2 pellets (package contains 6 pellets)
PARTS INFORMATION FOR 1990 SILHOUETTE GOODWRENCH ENGINE REPLACEMENT 3.1 L LG6 (VIN D)
Part Number Description Quantity/ Vehicle ----------- ----------- ----------------- 12513152 Goodwrench engine 1
12520756 Intake manifold 1 gasket kit
1977935 Distributor 0-ring 1
10182374 Water pump gasket 1
12337894 Oil filter adapt. 1 gasket
10094825 Seal, exhaust 1 manifold pipe
1052753 Coolant, Eng. (bulk) 6.7 qts.
12345612 Engine oil, 5W-30 4.5 qts (w/filter)
25010908 Oil filter (PF-51) 1 3634621 Sealer, engine coolant system 2 pellets (package contains 6 pellets)
WARRANTY CLAIM INFORMATION
Use one of the applicable warranty labor operation numbers below:
CUTLASS SUPREME
REPAIR PERFORMED CARLINE LABOR OP LABOR HR. FC S.T. ---------------- ------- -------- --------- -- ---- Goodwrench Engine Replace Cutlass Supreme T-3323 8.5 95
Add times:
w/Air Conditioning 0.4
Clean Parts on Vehicles 0.5 Over 30,000 Miles, If Necessary
w/Block Heater 0.1
Owner Reimbursement T-3324 95 0.2*
o Parts Allowance: Current Dealer price, plus 30% handling allowance. o *.2 hour clerical administration may be applied for in the Straight Time (ST) Column o Parts disposal: Dealers required to hold for 30 days for potential piston analysis.
SILHOUETTE
REPAIR PERFORMED CARLINE LABOR OP LABOR HR. FC S.T. ---------------- ------- -------- --------- -- ---- Goodwrench Engine Replace Silhouette T-3322 8.2 95
Add times:
w/Locking Wheel 0.1 Covers/Nuts
w/Air Conditioning 0.9
Clean Parts on Vehicles 0.5 w/over 30,000 Miles, If Necessary
w/Block Heater 0.1
Owner Reimbursement T-3324 95 0.2*
o Parts Allowance: Current Dealer Price, plus 30% handling allowance. o *.2 hour clerical administration may be applied for in the Straight Time (ST) Column o Parts disposal: Dealers required to hold for 30 days for potential piston analysis.
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.
