CAMPAIGN: PUSH ROD INTERFERENCE

SUBJECT: PUSH ROD INTERFERENCE

MODELS AND YEARS: 1995 2.2L (LN2) ENGINE 1995 CAVALIER, CORSICA BERETTA, S TRUCKS WITH CERTAIN 3.2L (LN2) ENGINES

TO: SELECT CHEVROLET GEO DEALERS

ATTENTION:

SERVICE & PARTS MANAGERS

GENERAL MOTORS HAS DECIDED THAT CERTAIN 1995 CAVALIER, CORSICA/BERETTA, S TRUCKS EQUIPPED WITH 2 2L LN2 4 CYLINDER ENGINES MAY HAVE PUSH ROD THAT MAY BE IN HARD CONTACT WITH THE ANTI-ROTATION BRACKET SECURING THE ROLLER LIFTERS. IF THE PUSH ROD IS IN HARD CONTACT WITH THE LIFTER ANTI-ROTATION BRACKET, IT MAY NOT BE PROPERLY SEATED IN THE LIFTER WHICH MAY REDUCE PROPER OIL FLOW TO THE ROCKER ARMS AND AFFECT DURABILITY.

TO CORRECT THIS CONDITION, DEALERS ARE TO INSPECT THE ENGINES FOR PROPER OIL FLOW AND IF FOUND RESTRICTED, REPLACE BOTH ANTI-ROTATION BRACKETS, AND THE #1 AND #3 EXHAUST PUSH RODS AND ROCKER ARMS.

VEHICLES INVOLVED

ALL VEHICLES INVOLVED IN THIS RECALL ARE LISTED HERE:

SHIPTO INVOICE VIN ------ ------- ----------------- 02186 02186 1GCCS1447SK255553 02420 02420 1GCCS1449SK254730 02441 02441 1GCCS1949SK255790 03011 03011 1G1JC1243SM106318 03184 03184 1G1JC1248SM106489 03690 03690 1G1JC1242SM106360 04026 04026 1GCCS1448SK238941 07021 07021 1G1JC1244SM106439 07086 07086 1G1LV1548SY317053 07221 07221 1G1JC1244SM106456 07495 07495 1G1JC1248SM106380 07706 07706 1G1JC1247SM106368 08270 08270 1G1JC1249SM106369 08359 08359 1G1LV1542SY319008 08363 08363 1GCCS1446SK254667 08384 08384 1G1JC1241SM106382 08507 08507 1GCCS1946SK255682 09063 09063 1GCCS1447SK255701 09063 09063 1GCCS1449SK255392 09067 09067 1GCCS194XSK255488 09309 09309 1GCCS1448SK254640 09417 09417 1GCCS1441SK254656 09593 09593 1GCCS194XSK255765 09596 09596 1GCCS1446SK255396 11685 11685 1GCCS1448SK254881 13008 13008 1GCCS1943SK255512 13057 13057 1GCCS1442SK255590 13073 13073 1G1LD5544SY318341 13482 13482 1GCCS1448SK255576 13596 13596 1G1JC1249SM106324 13693 13693 1GCCS1948SK255411 13857 13857 1GCCS1949SK254736 14030 14030 1GCCS1946SK254757 14213 14213 1GCCS1945SK254829 14262 14262 1GCCS1447SK255326 14287 14287 3G1JC124XSS883109 14290 14290 1GCCS1446SK254751 14356 14356 1G1JC1247SM106435 14368 14368 1GCCS1945SK254717 15009 15009 1GCCS1445SK254580 15221 15221 1GCCS1441SK255628

SHIPTO INVOICE VIN ------ ------- ----------------- 15308 15308 1GCCS1449SK255747 16045 16045 1G1JC1243SM106268 16063 16063 1G1LV1549SY318258 16126 16126 1GCCS1444SK254957 16140 16140 3G1JC1242SS883606 16507 16507 1G1LV1547SY318632 16778 16778 1GCCS1441SK254785 17004 17004 1G1LV1544SY318006 17066 17066 1G1LVI542SY318747 17197 17197 1G1JC1248SM106282 17211 17211 1G1JC1246SM106281 17544 17544 1GCCS1443SK254738 17619 17619 1GCCS144XSK254753 18095 18095 1G1JC1240SM106390 18258 18258 1GCCS1447SK255486 18573 18573 1G1JC1248SM106248 20084 20084 1G1JC1247SM106337 20107 20107 1G1JC1246SM106362 20298 20298 1G1JC1249SM106288 24034 24034 1G1JC124XSM106252 24447 24447 1G1JC1247SM106306 25183 25183 1G1LV1548SY317960 25276 25276 1G1LV1543SY318482 25276 25276 1G1LV1545SY318516 25473 25473 1GILV1544SY317695 25499 25499 1GCCS1947SK255741 26010 26010 1G1JC1246SM106278 26339 26339 1GCCS1944SK255857 26462 26462 1G1JC1244SM106201 26480 26480 1GCCS1945SK255768 28085 28085 1G1LV1540SY318133 28149 28149 1GCCS1442SK255377 28418 28418 1GCCS1441SK255855 28425 28425 1GCCS1440SK254597 28447 28447 1GCCS1940SK255970 32048 32048 1GCCS1447SK255195 32226 32226 1G1JC1241SM106415 32226 32226 1G1JC1248SM106234 32226 32226 1G1JC1248SM106315 32360 32360 1G1JC1240SM106342 32464 32464 1G1LV1547SY318002 32572 32572 1GCCS1949SK255675 44065 44065 1GCCS1948SK255991 44143 44143 1GCCS1447SK255830 44223 44223 1G1LV1545SY317737 44223 44223 1G1LV1549SY318020 44294 44294 1G1LV1548SY318610 44324 44324 1GCCS1446SK255382 44421 44421 1GCCS1940SK255743 47627 47627 1G1JC1244SM106327 67390 75092 1GCCS1943SK254599 67390 75092 1GCCS1944SK255440 67390 75092 1GCCS1946SK254645

SHIPTO INVOICE VIN ------ ------- ----------------- 72640 75092 1GCCS1942SK254741 72640 75092 1GCCS1945SK255608 72640 75092 1GCCS1945SK255639 72640 75092 1GCCS1947SK254833 72640 75092 1GCCS1948SK254694 72640 75092 1GCCS1948SK254839 72640 75092 1GCCS194XSK254857 84782 80325 1GCCS1440SK255510

PARTS INFORMATION

PARTS REQUIRED TO COMPLETE THIS CAMPAIGN ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATIONS (GMSPO TO ENSURE THESE PARTS WILL BE OBTAINED AS SOON AS POSSIBLE, THEY SHOULD BE ORDERED FROM GMSPO ON A "C.I.O. ORDER WITH NO SPECIAL INSTRUCTION CODE, BUT ON AN ADVISE CODE (2), ALL GOODWRENCH PART SYSTEM TEST RETAILERS SHOULD ORDER N "VIP" ORDER.

PART NUMBER DESCRIPTION QUANTITY

10198813 ROD, PUSH 2

24575182 BRACKET, ANTI-ROTATION 2

12510801 ARM, ROCKER 2 10141913* GASKET, HEAD 1 10101236** GASKET, HEAD 1

*GASKET USED ON S TRUCK **GASKET USED ON J & L CAR

OWNER NOTIFICATION

OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN BY LETTER FROM CHEVROLET MOTOR DIVISION (SEE COPY OF OWNER LETTER INCLUDED WITH THIS MESSAGE).

DEALER RESPONSIBILITY

ALL UNSOLD NEW VEHICLES IN DEALERS' POSSESSION AND SUBJECT TO THIS CAMPAIGN MUST BE HELD AND INSPECTED/REPAIRED PER THE SERVICE PROCEDURE OF THIS CAMPAIGN BULLETIN BEFORE OWNERS TAKE POSSESSION OF THESE VEHICLES.

SERVICE PROCEDURE

1. BLOCK THE VEHICLE DRIVE WHEELS.

2. START THE ENGINE AND ALLOW THE ENGINE TO IDLE FOR AT LEAST 10 MINUTES IN PARK (OR IN NEUTRAL ON MANUAL TRANSMISSION VEHICLES) AND ALLOW THE OIL PRESSURE AND TEMPERATURE TO STABILIZE.

3. TURN ENGINE OFF REMOVE THE ROCKER ARM COVER PLUG THE OPEN PCV VACUUM LINE AND ASSURE THAT THE SPARK PLUG WIRES ARE SECURELY INSTALLED AND LOCATED AWAY FROM THE ROCKER ARMS, VALVE SPRINGS, AND OTHER MOVING VALVETRAIN PARTS.

4. INSPECT THE EXHAUST ROCKER ARMS FOR CYLINDERS #1 AND #3 FOR THE PRESENCE OF OIL PUDDLED NEAR THE ROCKER ARM PIVOTS. IF OIL IS PRESENT PROCEED WITH STEP 5; IF OIL IS NOT PRESENT PROCEED WITH STEP 7.

5. START THE ENGINE AND ALLOW THE ENGINE TO IDLE IN PARK (OR IN NEUTRAL ON MANUAL TRANSMISSION VEHICLES). THE ENGINE MUST BE AT OPERATING TEMPERATURE TO GET ACCURATE RESULTS!

NOTICE:

DO NOT RAISE THE ENGINE RPM ABOVE IDLE!

6. VISUALLY COMPARE OIL FLOW OF THE EXHAUST ROCKER ARMS FOR CYLINDERS #1 AND/OR #3 WITH THE OTHER ROCKER ARMS. TO AID IN THIS COMPARISON, USE A RAG TO CAREFULLY SOAK OIL OFF OF THE ROCKER ARM PIVOT AREA AND THEN COMPARE THE AMOUNT OF TIME IT TAKES FOR EACH ROCKER ARM TO FILL WITH OIL AGAIN. OBSERVE CAREFULLY THE HOLE IN THE ROCKER ARM THAT FEEDS OIL FROM THE PUSHROD. OIL FLOW ON AFFECTED ENGINES IN SOME CASES MAY BE ONLY ENOUGH TO WET THE SURFACE OF THE ROCKER ARM, IN MANY CASES OIL FLOW WILL NOT OCCUR AT IDLE SPEEDS. OBSERVE THE OIL FLOW FOR AT LEAST 10 MINUTES AT IDLE SPEED UNLESS A LACK OF OIL IS IMMEDIATELY EVIDENT.

7. AN ENGINE WITH A DEFECTIVE VALVE LIFTER ANTI-ROTATION BRACKET IS IDENTIFIED WHEN A SIGNIFICANT REDUCTION IN OIL FLOW IS NOTED ON THE EXHAUST ROCKER ARMS FOR CYLINDERS #1 AND #3. A CORRECTLY OPERATING ROCKER ARM WILL FILL WITH ENOUGH OIL TO COVER THE PIVOT AREA, A ROCKER AFFECTED BY A DEFECTIVE VALVE LIFTER ANTI-ROTATION BRACKET MAY FILL WITH OIL VERY SLOWLY OR, IN MOST CASES WILL NOT FILL WITH OIL AT ALL. IF OIL FLOW IS NORMAL AND IS NOT VISIBLY REDUCED ON THE EXHAUST ROCKER ARMS FOR CYLINDERS #1 AND #3 REINSTALL THE ROCKER ARM COVER AND PROCEED TO STEP 9.

8. IF A DEFECTIVE VALVE LIFTER ANTI-ROTATION BRACKET IS IDENTIFIED, REPLACE BOTH LIFTER ANTI-ROTATION BRACKETS AND #1 AND #3 EXHAUST, ROCKER ARMS, AND PUSHRODS. SEE FIGURE 16 IN THE 2.2L SECTION OF THE APPROPRIATE SHOP MANUAL.

NOTE: THESE ENGINES ARE FILLED WITH DEX-COOL" COOLANT. THIS IS A NEW EXTENDED LIFE COOLANT AND SHOULD NOT BE CONTAMINATED WITH CONVENTIONAL COOLANT. SEE BULLETIN 53-62-01 JUNE 1995 FOR ADDITIONAL INFORMATION.

9. RESTORE THE OWNERS RADIO PRESETS AFTER COMPLETING REPAIRS.

10. INSTALL THE CAMPAIGN IDENTIFICATION LABEL.

CAMPAIGN IDENTIFICATION LABEL

EACH VEHICLE CORRECTED IN ACCORDANCE WITH THE INSTRUCTIONS OUTLINED IN THIS PRODUCT CAMPAIGN BULLETIN WILL REQUIRE A "CAMPAIGN IDENTIFICATION LABEL". EACH LABEL PROVIDES A SPACE TO INCLUDE THE CAMPAIGN NUMBER AND THE FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR A BALL POINT PEN.

EACH "CAMPAIGN IDENTIFICATION LABEL" IS TO BE LOCATED ON THE RADIATOR CORE SUPPORT IN AN AREA WHICH WILL BE VISIBLE WHEN THE VEHICLE IS BROUGHT IN FOR PERIODIC SERVICING BY THE OWNER. WHEN USING THE NEW CAMPAIGN IDENTIFICATION LABEL, BE SURE TO INSTALL THE CLEAR PROTECTION COVERING. ADDITIONAL "CAMPAIGN IDENTIFICATION LABELS" CAN BE OBTAINED FROM VISPAC INCORPORATED BY CALLING 1-800-269-5100 MONDAY THROUGH FRIDAY 6:00 A.M. TO 4:30 P.M. EST.) ASK FOR ITEM NUMBER S-1015 WHEN ORDERING.

APPLY "CAMPAIGN IDENTIFICATION LABEL" ONLY ON A CLEAN, DRY SURFACE.

CLAIM INFORMATION

SUBMIT A PRODUCT CAMPAIGN CLAIM WITH THE INFORMATION INDICATED BELOW AFTER AUGUST 7, 1995.

* FAILED PARTS LBR LBR OTH REPAIR PERF. PC PART NO. ALLOW CC-FC OP HRS HRS ------------------------------------------------------------------ INSPECTION ONLY - - ** SK-00 V9710 .7 .1

INSPECT & REPLACE, 7 24575182 ** SK-00 V9711 # .1 BRKTS, PUSH RODS, ROCKER ARMS

# L CAR 4.4 HR J CAR 5.0 HR S TRUCK 3.3 HR

* CAMPAIGN ADMINISTRATIVE ALLOWANCE.

**THE "PARTS ALLOWANCE" SHOULD BE THE SUM TOTAL OF THE CURRENT GMSPO DEALER NET PRICE PLUS 40% OF ALL PARTS REQUIRED FOR THE REPA .

REFER TO THE CHEVROLET CLAIMS PROCESSING MANUAL FOR DETAILS ON PRODUCT CAMPAIGN CLAIM SUBMISSION.

DEAR CHEVROLET OWNER:

THIS NOTICE IS SENT TO INFORM YOU THAT CHEVROLET MOTOR DIVISION IS CONDUCTING A RECALL CAMPAIGN THAT INCLUDES YOUR VEHICLE.

REASON FOR THIS RECALL

GENERAL MOTORS HAS DECIDED THAT CERTAIN 1995 CHEVROLET CAVALIER, CORSICA/BERETTA, AND S TRUCK EQUIPPED WITH 2.2L 4 CYLINDER ENGINES MAY HAVE AN INTERNAL ENGINE CONDITION WHICH MAY REDUCE PROPER OIL FLOW AND REDUCE ENGINE DURABILITY.

WHAT WE WILL DO

TO CORRECT THIS CONDITION, YOUR DEALER WILL INSPECT YOUR ENGINE AND IF NECESSARY REPLACE BOTH LIFTER ANTI-ROTATION BRACKETS, TWO PUSH RODS AND TWO ROCKER ARMS. THIS SERVICE WILL BE PERFORMED FOR YOU AT NO CHARGE.

WHAT YOU SHOULD DO

PLEASE CONTACT YOUR CHEVROLET DEALER AS SOON AS POSSIBLE TO ARRANGE A SERVICE DATE AND SO THE DEALER MAY ORDER THE NECESSARY PARTS FOR THE REPAIR. INSTRUCTIONS FOR PERFORMING THIS SERVICE HAVE BEEN SENT TO YOUR DEALER AND PARTS ARE AVAILABLE. YOU MAY ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH TIME WILL BE NEEDED TO SCHEDULE AND PROCESS YOUR VEHICLE.

WE ARE SORRY TO CAUSE YOU THIS INCONVENIENCE, HOWEVER, WE HAVE TAKE THIS ACTION IN THE INTEREST OF YOUR CONTINUED SATISFACTION WITH OUR PRODUCTS.

CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION

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.