Transmission and Drivetrain: Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Drivetrain - Information on Driveline Clunk Noise
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- M/T - Operating Characteristics Information
- A/T - Fluid Oil Cooler Flow Test
- A/T - 2-3 Upshift or 3-2 Downshift Clunk Noise
- A/T - Slight Vehicle Movement In Park At Start Up
- ACDelco(R) Remanufactured Transmissions - Program Update
- A/T & M/T - AC Delco Remanufactured Transmissions
- A/T - Intermittent Slip, Downshift, or Busy Cycling TCC
- A/T - R&R of Final Drive Pinion Gear Washers & Sun Gear
- A/T - Updated Bottom Pan with Latex Cellulose Gasket
- A/T - THM 440-T4 Pan Bolt Leaks
- A/T - Sealing of Valve Body Cover or Oil Pan
- Differential Pinion Shaft Lock Screw - Service
- A/T - 440-T4 Flare or Slip On Turns/Pump Whine
- A/T - Flare or Slips On Turns
- A/T - Transaxle Oil Filter Differences
- Engine - Stalls While Shifting Into Reverse or Drive
- Engine - Stalling While Shifting Into Reverse or Drive
- A/T - Harsh Engagement During Range Selection
- A/T - Harsh Shift Conditions Service Information
- A/T - 440-T4 Modulator Valve Buzz Noise
- A/T - THM 440-T4 Slips On Takeoff or Acceleration
- A/T - Slip or No Drive
- A/T Oil Cooler - Updated Flushing Procedure
- A/T - 4T60 No or Slipping 3rd Gear/No Reverse/Drive
- A/T - Multiple Driveability Concerns
- A/T - Intermittent Delayed Upshifts When Cold or Hot
- A/T - Delayed, Harsh Upshifts/Lack of Detent Downshift
- A/T Throttle Valve System - Condition Summary/Diagnosis
- A/T - Sporadic Engagement of Torque Converter Clutch
- A/T - Shift Cable Contacts the A/C Pipe
- Starter/Flywheel - Gear Clash or Milling
- MIL ON, Intermittent or No TCC, DTC's 62, 26 Set
- A/T - Diagnosis Information LO-Reverse Clutch
- A/T - 440-T4 New 2ND Clutch inner Piston Seal
- A/T - New Input Clutch and 3rd Clutch Seal Installers
- A/T - 4T60 New Input and 3RD Clutch Piston Seal
- A/T - No 1st Gear/Slips In 1st Gear
- A/T - Slips or Shudders/Slips or No 2nd Gear Diagnosis
- A/T - New Clutch Plates
- A/T - THM 3T40 New Roller Clutch
- A/T - 3RD Clutch Plate Assembly Identification
- A/T - THM 440-T4 Harsh 1-2 Shift
- A/T - 440-T4 Harsh Engagement/Engagement Shudder
- A/T - THM 440-T4 Long/Delayed 2-3 Shift
- A/T - THM 125C New Clutches/Repair Packages
- A/T - 440-T4 1-2 Shift Shudder
- A/T - 440T4 3rd Clutch Inner Seal Change
- A/T - 440T4 Improved Second Clutch Inner Lip Seal
- A/T - 440T4 3rd Clutch Plate Change
- A/T - THM125C Noise Diagnosis Update
- A/T - THM 440-T4 Thermal Element
- A/T - Drive Link Wear Specifications Revised
- A/T - Intermittent Loss of Drive
- A/T - No 3RD Gear
- A/T - 3T40/4T60 Noise In Park On an Incline
- A/T - Inspection and Repair Guidelines
- A/T - THM 440-T4 Service Manual Update
- A/T - Slips In Low/Reverse or No Reverse
- A/T - Engine Stalls When Placed Into Gear
- A/T - Core Return Product Feedback Form
- A/T - 125/125C/440-T4 Identifying Final Drive Ratios
- A/T - THM Control Valve Assembly Cleaning/Servicing
- A/T - 125C New Features for 1987
- A/T - 440T4 Check Ball Location #14 Illustrated
- A/T - Supplement To ATRASIL8725
- A/T - 440T4 Lockup Sleeve Installation
- A/T - 440T4 New Oil Filter Assembly
- A/T - 440T4 Intermittent Harsh 3-2 Downshift
- A/T - 440T4 Harsh Apply/Shudder On Reverse Application
- A/T - Converter Clutch Solenoid Fluid Source I.D.
- A/T - THM 125C Manual Valve Change/Improved Shift Feel
- A/T - Cracked Flex Plate
- A/T - 440T4 Buzzing Noise
- A/T - 440T4 Improved Shift Feel/2nd Clutch
- A/T - THM 125C Sticking TCC Solenoids
- A/T - 4T60/440T4 Changes For 1988
- A/T - 3T40/THM 125C Intermittent or No TCC Apply
- A/T - 440T4 Input Sprag Replacement
- A/T - 3T40/THM 125C Forward Drum Design Changes
- A/T - Torque Converter Identification
- A/T - 440T4 2-3 Bind-Up/Slips
- A/T - 440T4 Wiring Schematics
- A/T - Engine Vacuum Testing
- A/T - Diagnosing Converter Lock-Up Problems
- A/T - 125C Uncontrolled Lock-Up, Kills Engine At Stop
- A/T - 440T4 No Line Pressure Rise
- A/T - Early Upshift/No Kickdown
- A/T - 440T4/4T60 Spacer Plate Matching
- A/T - How To Use A Pressure Gauge
- A/T - 440T4 Harsh 3-2 Detent Downshift
- A/T - AXOD/E 44T4's and 125's Chain Stretch
- A/T - 125/440 T4 Sprocket and Final Drive Identification
- A/T - 440T4 Channel Plate Gasket Blow-Out
- A/T - 440T4 No Upshift/Wrong Gear
- A/T - THM Late or No Upshifts
- A/T - 440T4 Coast-Down Clunk
- A/T - Drive Axle and Wheel Lug Nut Torque Specifications
- A/T - 440T4/4T60 Late or No Upshift
- A/T - Harsh Forward Engagement
- A/T - 440T4 Converter Clutch Shudder On Apply
- A/T - No Converter Clutch Apply When Unit Is Hot
- A/T - Rapid Converter Pump Bushing Wear
- A/T - Converter Clutch Shudder
- A/T - 125/200/200 4R/325 4L Late or No Upshift
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - Pressure Tap Locations
- A/T - Governor Pressure Switches
- A/T - 440T4 Noises/Improper Fluid Levels After Service
- A/T - 125/125C No Movement Any Direction
- A/T - 440T4 Slipping On 2-3 Shift
- A/T - 440T4 No 1-2 Shift After Rebuild
- A/T - 440T4 Bind-Up/Fourth Gear After Rebuild
- A/T - 440T4 Overheating Of Torque Converter
- A/T - 125/125C Input Drum Contacting Center Support
- A/T - 125C, 440T4 No Upshift
- A/T - 125/125C Repeated Pump Rotor Spline Failure
- A/T - Methods to Check for Restricted Exhaust
- A/T - 440T4 Reverse Engagement In Neutral
- A/T - 440T4 Delayed Engagement
- A/T - 440T4 No Vehicle Movement/Any Direction
- A/T - 125/125C Delayed Reverse Or Slips In Reverse
- A/T - 440T4 Replacing Left Axle Seal
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - Front Bushing Wear
- A/T - 125/125C TCC Engagement in Drive, First & Reverse
- A/T - 440T4 Early/Late Checkball Locations
- A/T - 440T4 Input Sprag Clutch/Updated Part
- A/T - 440T4 No Reverse Engagement After Rebuild
- A/T - 440T4 Valve Body Removal & Precautions
- A/T - 440T4 Slips Or No Movement Forward
- A/T - THM 125C Auxiliary Valve Body
- A/T - No Upshift/Governor Contamination
- A/T - 440T4 Converter Regulator Valve
- A/T - 440T4 Blowing Fuses
- A/T - 440T4 Plastic Oil Lube Dam
- A/T - THM Steel Clutch Piston Inspection
- A/T - 440T4 Bind-Up In All Gears
- A/T - Sprag Rotation
- A/T - 440T4 Harsh 3-2 Downshift
- A/T - THM 125C Model Code Information
- A/T - 440T4 TCC Applies With 1-2 Upshift
- A/T - 125C Case Differences
- A/T - Checking Pressure Switches For Leaks
- A/T - 440T4 Converter Regulator Spring Update
- A/T - 440T4 Lock Up And Cruise Control Problems
- A/T - Math Formulas Part I
- A/T - Twenty Steps To Successful Repairs
- A/T - 4T60/440T4 Model Code Information
- A/T - Math Part II
- A/T - 440T4 Soft/Slipping 1-2 Upshift Flare
- A/T - 440T4 Reverse Reaction Plate/Valve Body Strap
- A/T - 440T4 Converter Clutch Shudder
- A/T - Choosing the Right ATF
- M/T - High Shift, Clutch Pedal Effort
- M/T - Neutral/Drive Gear Rattle
- M/T - Fluid Level Checking & Filling
- M/T - Exchange Program Diagnostic Information
- Engine - Clicking/Knocking Noise
- A/T - Updated ATF Fluid Color/Level Check Information
- A/T - Proper Fluid Level Checking Procedure
- A/T - DEXRON III Fluid Introduction
- A/T - F-7/4T60/4T60-E - Drive Link Noise Diagnosis
- A/T - 4L60 Binding/Inoperative In Reverse
- A/T - New Thermo Element
- A/T - THM 440-T4 Second Gear Starts
- A/T - Evaluating Peened Spacer Plates
- A/T - Erratic Shifts/No Upshifts
- A/T - New 1-2 and Reverse Band Assemblies
- A/T - Harsh Engagement, Double Bump or Shudder
- A/T - New Style 1-2 Band Assembly
- A/T - Intermittent No Reverse Condition
- A/T - THM 700R4 New Second Servo Apply Pin
- A/T - THM 125C Harsh 1-2 Shift
- A/T - 4T60 Slips in Reverse/Reverse Band Distress
- A/T - 3T40 New Side Cover and Bottom Pan Gasket
- Drivetrain - New Seal Protector for Drive Axle R&R
- A/T - Revised End Play Specification
- A/T - Throttle Valve Lever Spring Eliminated
- A/T - THM 125C New Lo/Reverse Pipe Assembly
- M/T - Hydraulic Clutch Bleeding Procedure Improvement
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- A/T - Grinding/Growling Noise in Park on Incline
- A/T - Water Or Coolant Contamination Information
- A/T - DEXRON(R)-VI Fluid Information