SPECIAL POLICY: CYLINDER BLOCK ADJUSTMENT
Model and Year: 1984 CELEBRITY, CAMARO, AND CITATION MODEL VEHICLES EQUIPPED WITH RPO LR8 OR LQ9 2.5L ENGINES (VIN CODES R AND 2)
TO: ALL CHEVROLET DEALERS
This revised Dealer Bulletin cancels and replaces 84-261 dated November 1985 which should be destroyed. This reissue reflects changes in part numbers only.
Some 1984 Celebrity, Camaro, and Citation model vehicles equipped with RPO LR8 or LQ9 2.5L engines (VIN Codes R and 2) may experience cracks in the cylinder block casting between the valve lifter cavity and the water jacket resulting in a loss of engine coolant and subsequent engine failure.
VEHICLES INVOLVED
All 1984 Celebrity, Camaro, and Citation model vehicles equipped with RPO LR8 or LQ9 2.5L engines (VIN Code R and 2) built within the following parameters:
PLANT FROM THROUGH ----- ---- -------- Celebrity: Framingham (A) EG100001 EG156453 Oklahoma City (A) E6800001 E6931001 Oshawa (A) E1100001 E1142142
Camaro:
Norwood (F) EN100001 EN167527 Van Nuys (F) EL100001 EL198365
Citation:
Tarrytown (X) ET100001 ET163406 Willow Run (X) EW100001 EW106783
SPECIAL POLICY ADJUSTMENT
Should the engine block crack, due to the conditions indentified in this Special Policy bulletin, General Motors will replace the partial engine P/N 10030773 and the following associated parts:
Cam shaft Transmission insert pilot bushing
Cam gear Oil filter
Crank gear Engine oil
Lifters Engine coolant
Gaskets
This Special Policy covers both parts and labor for a period of five (5) years or 100,000 miles, whichever occurs first, from the date the vehicle was originally placed in service.
This "Special Policy Adjustment Bulletin," should be filed in the 3 ring binder furnished to the dealer by General Motors.
SERVICE PROCEDURE
1. Pressure test for evidence of coolant loss.
2. If pressure test shows no visible evidence of coolant loss, remove cover from valve lifter area and inspect casting above lifter cavity (See illustration).
3. With engine warm and pressure applied, coolant should be visible using a "black light."
4. If condition is evident, cylinder block and those associated parts identified in this bulletin must be replaced using applicable replacement procedures referenced in Section 6A of the appropriate 1984 Service Manual.
5. To prevent camshaft lobe and valve lifter scuffing, use P/N 1052367 (16 ounce).
PARTS INFORMATION
Parts are to be obtained from the General Motors Warehousing and Distribution Division (GMWDD). These parts, when required, should be ordered from GMWDD on a C.I.O. order with no special instruction code, but order on an advise code (2).
PART NUMBER QUANTITY DESCRIPTION ----------- -------- ----------- 10030773 1 Partial engine
IMPORTANT
P/N 10030773 consists of block, pistons and rod assemblies, crankshaft, crankshaft bearings, rod bearings and rear seals.
* 10029616 1 Cam shaft
10005942 1 Cam gear
10028052 1 Crank gear
* 5234200 8 Lifters
10026805 1 Gasket kit
10026815 1 Gasket kit
10009785 1 Manual transmission insert pilot bushing (Celebrity, Citation)
10007202 1 Manual transmission insert pilot bushing (Camaro)
10018699 1 Automatic transmission insert pilot bushing (Celebrity, Camaro, Citation)
25010792 1 Oil filter
1052734/1052915 1 (10 oz.) RTV
1052763 3qts. Oil
1052367 1 (16 oz.) Engine Oil Supplement
1052753 6 qts. Engine coolantg
*Denotes part number change.
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.
