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# BULLETIN SUMMARY MANUAL 700-R4 BULLETIN LISTING

#### VEHICLES AFFECTED: 1982 Thru 1984 Vehicles Equipped With THM 700-R4 Transmissions

CONTENTS -------- PAGE ---- INTRODUCTION ------------ SECTION 1 - TRANSMISSION IDENTIFICATION

Transmission Models, Vehicle and Engine Type.............. 1 Transmission Identification Numbers ...................... 4

SECTION 2 - BULLETIN SUMMARY

When Making Internal Repairs These Bulletins Should Be Followed Where Applicable................................. 6

SECTION 3 - BULLETIN SUMMARY

Additional Bulletins Provided For Quick Reference.......... 8

INTRODUCTION: During 1982 and 1984, many production changes have been added to the THM 700-R4 transmission. The number of bulletins released has become too large to reference quickly. However, it is very important to find and use current information whenever you are servicing this transmission. This summary manual is to assist you in finding the bulletins you need quickly.

This Summary Manual contains the numbers and subjects for service bulletins that pertain to the THM 700-R4 transmissions installed into 1982 thru 1984 model vehicles.

OBJECTIVES: When you have read this summary manual, you will be able to:

Locate the transmission identification number.

Identify transmission models, vehicle and engine types.

Locate the service bulletins which pertain to the THM 700-R4 transmission, including latest part numbers and service procedures.

Decide if the content of a particular bulletin relates to the condition of the transmission.

ORGANIZATION: This Summary Manual is organized as follows:

SECTION 1. TRANSMISSION IDENTIFICATION - This section provides charts of the transmission models, vehicle and engine types by year, the location and decoding of the transmission identification numbers.

SECTION 2. BULLETIN SUMMARY - This section contains charts with the bulletin numbers grouped according to common repairs, i.e., Shift Conditions, No Gears, New Part Numbers and Service Procedures. The service bulletins contained in this section should be used when any internal repairs are being made, to assure the transmission has the latest changes if applicable.

SECTION 3. BULLETIN SUMMARY - This section also contains charts with the bulletin numbers grouped according to common repairs, i.e., Shift Conditions, End Play, New Part Numbers and Service Procedures. The service bulletins contained in this section are for your quick reference when making any repairs.

SECTION 1. TRANSMISSION IDENTIFICATION

TRANSMISSION MODELS, VEHICLE AND ENGINE TYPE - 1982

**ELECTRICAL TRANS. WIRING TYPES MODEL VEHICLE AND ENGINE TYPE ------------ ----- ----------------------- 1 9T5 (*M7) 5.7L C -Truck Heavy Duty 1 9T6 (*MC) 4.1L C -Truck (Federal) 2 9TC (*M2) 4.1L K -Truck 2 9TE (*ME) 5.0L & 5.7L C -Truck (California) 2 9TH (*M4) 5.0L & 5.7L K -Truck (California) 1 9TJ (*MD) 5.7L & 5.0L C -Truck (Federal & Altitude) 1 9TK (*M5) 5.7L K -Truck 3 9TN (*MH) 6.2L C -Truck Diesel 2 9TP (*M6) 6.2L K -Truck Diesel 2 9TW (*MB) 4.1L C -Truck (Nationwide) 4 9YA (*Y6) 5.7L Y -Car (Corvette) 4 9YK (*Y3) 5.0L B -Car 4 9YL (*Y4) 4.4L B -Car

* These Models Contain The Forward Roller Clutch.

** Refer to Your Service Manual For Electrical Wiring Diagram.

TRANSMISSION MODELS, VEHICLE AND ENGINE TYPE - 1983

ELECTRICAL TRANS. WIRING TYPES MODEL VEHICLE AND ENGINE TYPE ------------- ----- ----------------------- 5 3MB 4.1L C -Truck (California) 1 3MC 4.1L C -Truck (Federal & Altitude) 1 3MD 5.0L C -Truck (Federal & Altitude) 5 3ME 5.0L & 5.7L C -Truck (California) 3 3MH 6.2L C -Truck Diesel All Light Duty 1 3MJ 4.1L K -Truck and G - Van 1 3MK 5.0L C -Truck (Federal & Altitude) 8 3ML 2.8L S Truck (Federal & Altitude) - 6 3MS 2.8L T -Truck (California) 5 3MW 5.7L K -Truck (California) 9 3PQ 2.5L F -Car 7 3T2 2.0L S -Truck (Federal & Altitude) 8 3T7 2.8L T -Truck (Federal & Altitude) 2 3T8 6.2L K -Truck Diesel 1 3TC 4.0L K -Truck (Federal) 5 3TE 5.0L & 5.7L C -Truck (California)

ELECTRICAL TRANS. WIRING TYPES MODEL VEHICLE AND ENGINE TYPE ------------ ----- ----------------------- 2 3TH 5.7L K - Truck Heavy Duty 1 3TK 5.0L & 5.7L K - Truck (Federal & Altitude) 3 3TL 6.2L C - Truck & G-Van Diesel Heavy Duty 2 3TP 6.2L K - Truck Diesel All 2 3TS 6.2L K - Truck Diesel Heavy Duty 2 3TZ 6.2L K - Truck Diesel Heavy Duty 7 3VA 2.0L S - Truck (Federal & Altitude) 2 3VH 5.7L C - Truck Heavy Duty 3 3VJ 6.2L C - Truck Diesel Light & Heavy Duty 5 3VN 4.1L C - Truck & G-Van (California) 4 3Y9 5.7L Y - Car (Corvette) 9 3YF 2.8L F - Car 4 3YG 5.0L F - Car 9 3YH 2.8L F - Car High Output 4 3YK 5.0L B - Wagon 4 3YN 5.7L B - Car (Police) 4 3YP 5.0L F Car

TRANSMISSION MODELS, VEHICLES AND ENGINE TYPE - 1984

ELECTRICAL TRANS. WIRING MODEL VEHICLE AND ENGINE TYPE ------ ----- ----------------------- 5 4MB 4.1L C - Truck (California) 1 4MC 4.1L C - Truck (Federal & Altitude) 1 4MD 5.0L C - Truck (Federal & Altitude) 4 4ME 5.0L & 5.7L C - Truck/G-Van (California) 10 4MG 6.2L C - Truck Diesel(California) 3 4MH 6.2L C - Truck Diesel Light Duty 1 4MJ 4.1L CV - Truck & G-Van (Federal & 1 4MK 5.0L & Altitude) 5.7L C - Truck & G-Van (Federal & Altitude) 8 4ML 2.8L S - Truck (Federal & Altitude) 6 4MP 2.SL S - Truck (Califomia) 2 4HR 5.0L C - Truck Canada 6 4MS 2.8L T - Truck (California) 10 4MW 5.7L K - Truck (California) 6 4PQ 2.8L F - Car 8 4T7 2.8L T - Truck (Federal & Altitude) 2 4T8 6.2L K - Truck (Diesel) 1 4TC 4.1L K - Truck (Federal) 2 4TD 5.0L K - Truck Canada 4 4TE 5.0L & 5.7L C - Truck (California)

ELECTRICAL TRANS. WIRING TYPE MODEL VEHICLE AND ENGINE TYPE ------------ ----- ----------------------- 2 4TH 5.7L K - Truck Heavy Duty 2 4TG 5.0L C - Truck Canada 1 4TK 5.0L & 5.7L K - Truck (Federal & Altitude) 3 4TL 6.2L C - Truck & G-Van Heavy Duty 10 4TM 6.2L K - Truck (California) 2 4TZ 6.2L K - Truck Diesel Heavy Duty 8 4VA 2.0L S - Truck (Federal & Altitude) 10 4VE 6.2L G - Van (California) 2 4VH 5.0L C - Truck & G-Van Heavy Duty 3 4VJ 6.2L C - Truck & G-Van 5 4VN 4.1L C Truck & G-Van (California) 10 4VX 6.2L C - Truck Diesel 3 4Y6 5.0L B - Car Canada 3 4Y7 2.8L F - Car Canada 3 4Y8 F - Car Canada 4 4Y9 5.7L Y - Car (Corvette T.B.I.) 4 4YA 5.7L Y - Car (Corvette T.B.I. L83 Engine) 9 4YF 2.8L F - Car 4 4YG 5.0L F - Car 9 4YH 2.8L F - Car Heavy Duty 4 4YK 5.0L B - Car Wagon 4 4YN 5.7L B - Car (Police) 4 4YP 5.0L F - Car 4 4YW 5.7L Y - Car (Corvette)

Provided below is a chart that shows specific switches required for the various types of transmission usages. Refer to your service manual for wiring diagrams of each vehicle type if needed.

VEHICLE TYPE AND SWITCHES REQUIRED

TYPE TCC SIG SW 3RD CL SW 4-3 DS SW 4TH CL SW ---- ---------- --------- --------- --------- 1 8642473 8643710 8642346 8643710 2 Plug Plug 8642346 8643710 3 Plug Plug 8642346 Plug 4 Plug Plug 8642346 8634475 (8642569) 5 8642473 8643710 8642346 8642473 6 Plug Plug Plug Plug 7 8642473 Plug Plug Plug 8 Plug Plug Plug 8643710 9 Plug Plug Plug 8634475 (8642569) 10 Plug Plug 8642346 8642473

SECTION 1. TRANSMISSION IDENTIFICATION NUMBERS Page 4

LOCATION OF TRANSMISSION IDENTIFICATION NUMBER.

The transmission identification number is located on the right side of the transmission on the pan rail as shown below.

THE TRANSMISSION IDENTIFICATION NUMBERS.

Refer to the chart and steps listed below for detailed explanation of the transmission identification numbers.

#### MODEL YEAR: Tells what model year the transmission was built. Example: 9 = 1982, 3 = 1983, 4 = 1984, 5 = 1985.

#### MODEL: Transmission model identification.

JULIAN DATE: Tells what day of the year the transmission was built. Example: Julian date 001 = January 1, and Julian date 365 = December 31. It is also very important to remember that the transmission model Year starts MID YEAR. This means the first transmission built in any model year will start with a higher Julian date.

EXAMPLE: IF THE FIRST TRANSMISSION IN 1984 WAS BUILT ON AUG. 5 THEN THE JULIAN DATE STARTS AT 218 AND GOES TO 365 (DECEMBER 31). THE JULIAN DATE WILL THEN DROP TO 001 JANUARY 1, AND THEN CONTINUE TO 217 (AUGUST 4, 1985).

SHIFT BUILT: Tells what shift the tranamision was built,

SECTION 2. BULLETIN SUMMARY

WHEN MAKING INTERNAL REPAIRS ON ANY 1982 THRU 1984 THM 700-R4 TRANSMISSION THE FOLLOWING PARTS SHOULD BE CAREFULLY EXAMINED AND REPLACED WHERE APPLICABLE:

PRODUCT MODELS SERVICE AND SUBJECT/SUMMARY CONDITION BULLETIN PROD. DATE ---------------- --------- -------- ----------- Service information for the General 1983 ALL THM forward sprag clutch-Sprag Service 7-194 700-R4 conversion kit to service Information Sep 30/83 PRIOR TO all forward sprag clutch. JULIAN DATE Part number 8647050 changed 123, 1982 to 8647458 in this bulletin.

Revised design snap ring Snap ring for 1983 ALL THM for the reaction sun gear the reaction 7-162 700-R4 and low reverse spring sun gear and Jul 15/83 PRIOR TO retainer to case-Snap low and reverse JULIAN DATE ring revised to prevent spring retainer 244, 1983 over expanding. Part over expanded. number 8647337.

Input carrier to output Input carrier 1983 ALL 1982 & shaft snap ring-Replace to output 7-144 1983 THM the snap ring to prevent shaft snap Jul 30/83 700-R4 over expansion. (Use tool ring dislodged number J-34627 to install or over snap ring). expanded.

No 2nd, 4th or reverse gear Reaction sun 1983 ALL THM operation-Inspection of gear shell 7-192 700-R4 the reaction sun gear shell. has a broken Sep 15/83 Part number 8642203 stripped spline.

Buzzing noise and possible Buzzing noise 1984 ALL THM delayed upshifts-Service and possible 7-117 700-R4 package 8042993 for the delayed Mar 31/84 1982 control valve body aseembly upshifts. to spacer plate and spacer plate to case gaskets.

Loss of Power in Drive and Loss of Power 1984 ALL THM Reverse-Pump blades not in Drive and 7-120 700-R4 retaining their seats in the Reverse Apr 30/84 PRIOR TO torque converter pump START OF housing. 1984 PRODUCTION

WHEN MAKING INTERNAL REPAIRS ON ANY 1982 THRU 1984 THM 700-R4 TRANSMISSION THE FOLLOWING PARTS SHOULD BE CAREFULLY EXAMINED AND REPLACED WHERE APPLICABLE: PRODUCT MODELS SERVICE AND SUBJECT/SUMMARY CONDITION BULLETIN PROD. DATE --------------- ---------- -------- ----------- Grinding noise in all ranges Grinding noise 1984 ALL THM or no drive condition- or no drive 7-115 700-R4 New reaction internal gear condition in Mar 31/84 PRIOR TO 8654161 has a change in all raages. JULIAN DATE the parking lugs and 009, 1984 internal gear teeth.

Burned 3-4 clutch, high 2-3 Burned 3-4 1984 ALL THM shifts-New input clutch clutch, high 7-126 700-R4 housing and control valve 2-3 shifts. May 15/84 PRIOR TO body assembly. JULIAN DATE 015, 1984

New servo cover and seal- External oil 1983 ALL THM Provides a tighter seal leak at th- 7-208 700-R4 fit between the case servo 2-4 servo Mar 31/84 PRIOR TO bore and the 2-4 servo cover. JULIAN DATE cover. 091, 1984

Transmission oil pan leaks- Transmission 1984 ALL THM New transmission oil pan oil pan leaks 7-110 700-R4 hex head screw and conical Feb 29/84 PRIOR TO washer assembly. JULIAN DATE 206, 1983

New link detent lever to Broken or 1984 ALL THM ranual valve-New link cracked manual 7-113 700-R4 detent lever 8654113 valve rod end Mar 31/84 PRIOR TO eliminates clip rod-end. clip. JULIAN DATE 186, 1983

No 4th gear and/or No 4th gear 1983 ALL THM burned 2-4 band assy and/or burned 7-134 700-R4 2-4 Servo exhaust hole 2-4 band May 14/83 1982-1983 blocked by RTV. assembly.

Shift conditions that Erractic shift 1983 ALL THM T.V. cable adjustments conditions that 7-195 700-R4 will not correct-Repair T.V. cable Sep 30/83 ALL 82 & 83 procedure to correct adjustments will sticking throttle valve not correct. and related parts.

SECTION 2.

THE FOLLOWING SERVICE BULLETINS ARE FOR YOUR QUICK REFERENCE:

PRODUCT MODELS SERVICE AND SUBJECT/SUMMARY CONDITION BULLETIN PROD. DATE --------------- ---------- -------- ---------- Erratic or no upshifts- Erratic or no 1983 ALL THM Diagnosis procedure and upshifts 7-203 700-R4 guidelines for servicing Nov 15/83 governor gear.

Diagnosis procedure for Slipping 1-2 1983 ALL THM a burned 2-4 band and/ shift or no 7-136 700-R4 or 3-4 clutch-Procedure 1-2 shift and/ May 31/83 is a general guide to be or slipping used with your service 2-3 shift. manual.

No drive and reverse- No drive and 1983 ALL THM Oil pump assembly parts reverse 7-174 700-R4 information when servicing Jul 30/84 1982-1983 the oil pump. NOTE: Part number 8647190 changed to 8654019 and part 8647189 changed to 8654018.

Harsh and delayed up- Harsh and 1964 ALL THM upshifts-New TV exhaust delayed 7-103 700-R4 check ball in the control upshifts Oct 31/83 1982-1983 valve body assembly.

Harsh Manual 2-1 Down- Harsh Manual 1983 ALL THM shift Feel and/or 2-1 Feel and 7-212 700-R4 Delayed Downshifts- or Delayed Jan 14/84 1982-1983 New control valve body Downshifts. and spacer plate.

Lock-up in reverse- 4-3 sequence L984 ALLTHM Procedure to check for valve or 7-111 700-R4 stuck shift valves 2-3 shift Feb 29/84 valve stuck

Reverse input piston Slipping in 1983 ALL THM dishing-Inspection of reverse or no 7-149 700-R4 reverse input piston reverse. Jun 30/83 assembly.

Procedure to check for High oil 1983 ALL THM possible lack of lubr- temperature, 7-156 700-R4 ication-When over- burned trans- Jun 30/83 hauling a transmission mission oil, which shows signs of and parts turned high oil temperature (such blue. as burned transmission fluid, parts turned blue, etc.) Check lubrication passages.

Transmission overheating- No torque con- 1983 ALL THM When driven in 4th gear verter clutch 7-204 700-R4 (overdrive) and the apply and Nov 15/83 converter clutch is not transmission is operational. overheating in 4th gear over- drive.

Burned 3-4 clutch- Burned 3-4 1984 9Y6, 3YH, New spacer plate. clutch 7-112 3Y9 THM Also refer to bulletin Feb 29/84 700-R4 1983, 7-136 May 31/83. 1982 & 1983

Oil pump seal-Oil Pump oil seal 1983 ALL THM pump seal assembly leak- leaking or 7-163 700-R4 ing or blown out of the blown out of Jul 15/83 PRIOR TO pump body. Service pro- the pump body. JULIAN DATE cedure to revise the 127, 1983 drain-back passage in the pump body.

Diagnosis transmission External oil 1983 ALL THM oil leaks. leaks 7-177 700-P4 Aug 31/83 Transmission oil ex- Transmission 1983 ALL THM hausting out the oil exhausting 7-211 700-R4 breather-New oil out the Mar 31/84 PRIOR TO pump assembly and breather JULIAN DATE gasket. 196, 1983

Case extension oil seal Case extension 1983 ALL THM assembly-Procedure for oil seal leaks. 7-141 700-R4 installing the yoke on May 31/83 1982-1983 the output shaft.

Low and reverse piston Ceneral 1984 ALL THM installation and re- Service 7-100 700-R4 moval-Correct pro- Information Oct 31/83 1983 & 1984 cedure to prevent damage to piston seals.

Pinched TCC solenoid T.C.C. 1983 ALL THM wires-Special washer inoperative 7-140 700-R4 to hold the wires May 31/83 PRIOR TO in place. JULIAN DATE 305, 1982& 1983 Input housing assembly- Blocked oil 1983 ALL THM air Check procedure to passages 7-131 700-R4 be used during dis- May 14/83 assembly.

Input housing and shaft Gear clash on 1983 ALL THM assembly service infor- four-wheel 7-157 700-R4 mation-Identification drive vehicles Jun 30/83 PRIOR TO of new input shaft during transfer JULIAN DATE housing being used in case shifting. 026, 1983 four wheel drive vehicles to reduce gear clash.

PRODUCT MODELS SERVICE AND SUBJECT/SUMMARY CONDITION BULLETIN PROD. DATE --------------- --------- -------- ---------- Input clutch housing General 1983 ALL THM turbine shaft redesign- Service 7-137 700-R4 Identification and parts Information May 31/83 information for first and second design input clutch housing turbine shaft and related parts.

Accumulator spring usage General 1983 ALL THM chart-Quick reference Service 7-178 700-R4 chart for spring usage Aug 31/83 1982&1983 and proper spring location.

Transmission end play General 1983 ALL THM Service information- Service 7-185 700-R4 Transmissions end play Information Aug 31/83 helpful information.

End-play checking General 1983 ALL THM tools-Information of Service 7-191 700-R4 tools available. Information Sep 15/83

Oil pressure switch General 1983 ALL THM information-Procedure Service 7-196 700-R4 to check oil pressure Information Sep 30/83 switches. Also parts and colour code infor- mation.

Diagnosing low oil pres- Low oil 1983 ALL THM sure or cavitation noise- pressure or 7-161 700-R4 Oil filter body or "O" oil pump Jul 15/83 ring may be cracked. cavitation noise.

1982 service manual General 1982 ALL THM update-Artwork to be Service 7-112A 700-R4 added in the 1982 Information Jul 30/83 service manual.

Service Procedure For General 1984 ALL THM The Oil Pump Rotor And Service 7-125 700-R4 Slide-oil pump rotor Information May 15/84 and slide released for service.

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.