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
- Vehicle - Fluid Leak Detection/Dyes
- ACDelco(R) Remanufactured Transmissions - Program Update
- A/T & M/T - AC Delco Remanufactured Transmissions
- Drivetrain - Vibration/Clicking/CV Joint Failure
- A/T - 4T60 Oil Pan Bolt Leaks
- A/T - New Bottom Pan & Controlled Compression Gasket
- A/T - Update Bottom Pan and Gasket
- A/T - Possible Reuse Hex Head Screws & Conical Washers
- A/T - Valve Body Cover or Oil Pan Leaks
- Tools - Rear Axle Differential Pinion Shaft Remover
- A/T - Engine Flare or Slip On Turns/Pump Whine
- A/T - Slipping in All Ranges
- A/T - Transaxle Oil Filter Differences
- Engine - Stalling While Shifting Into Reverse or Drive
- A/T - New Torque Converter Clutch Solenoid Screen
- A/T - TCC Engages In 2nd Gear
- A/T - Harsh 3-2 Downshifts
- A/T - Harsh Shifts or 2nd Gear Starts
- A/T - Updated Service Part Numbers for Oil Pumps
- A/T - New Oil Pump Drive Shaft & Other Changes
- A/T - 4T60 Slips/No 3rd Gear/No Drive/Reverse
- A/T - New Torque Converter End Play Measurement & Tool
- A/T - Torque Converter Condition Diagnosis
- A/T - Intermittent Delayed Upshifts
- A/T - Diagnosis Information, Lo-Reverse Clutch
- A/T - Intermittent or Complete Loss of Drive and Reverse
- A/T - New 2nd Gear Clutch Piston Seal
- A/T - 3T40 New Roller Clutch
- A/T - THM 440T4/4T60E New Clutch Plates
- A/T - Revised Direct Clutch Housing
- A/T - New Input Clutch and 3rd Clutch Seal Installers
- A/T - 1-2 Slip or Shudder, 2nd Gear Slip, or No 2nd Gear
- A/T - Slips In First or No First Gear
- A/T - 1st-2nd Gear Shift Shudder
- A/T - THM 440-T4 Long/Delayed 2-3 Shift
- A/T - THM 440-4 Delayed 2-3 Shift or Loss of 3RD Gear
- A/T - Loss of Drive and/or Reverse
- A/T - Harsh Gear Engagement
- A/T - Soft, Slipping or No 1-2 Shift
- A/T - Harsh Park/Neutral to Drive Shifting
- A/T - New Forward and Direct Clutch
- A/T - 440T4 3rd Clutch Inner Seal Change
- A/T - 440T4 3rd Clutch Plate Change
- A/T - Identification Information
- A/T - Case Cover Oil Slot Added
- Tools - Turbine Shaft Seal Ring Installation Tool
- Warranty - Delay In Returning Transaxles
- A/T - Delayed Forward Engagement, Slips on Takeoff
- A/T - Drive Link Wear Specification Revised
- A/T - Intermittent Loss of Drive
- A/T - New Input Carrier Thrust Washers
- A/T - New R&R Final Drive Pinion Gear Washers & Sun Gear
- A/T - No 3RD Gear (New Thrust Bearing)
- A/T - On Car Repairs
- A/T - THM 440-T4 Product Update Book
- A/T - Replacement/Repair Procedure
- A/T - Service Parts, Unit Repair Information & ID
- A/T - Harsh Shift Conditions
- A/T - Service Replacement Transaxle Assembly SRTA Update
- A/T - Core Return Product Feedback Form
- A/T - 125/125C/440-T4 Identifying Final Drive Ratios
- A/T - 440T4 Revised Parts
- A/T - 440T4 Poor Shift Quality
- A/T - 125C Throttle Valve Buzz
- A/T - 440T4 Preliminary Check Procedure
- A/T - 125/125C Intermediate Servo Orifice Eliminated
- A/T - THM Control Valve Assembly Cleaning/Servicing
- A/T - 125/125C Improved Transmission Gaskets
- A/T - 440T4 Supplemental Diagnosis
- A/T - 440T4 Delayed Forward Engagement/Slips
- A/T - 4404T Throttle Pedal Effort/ Modification
- A/T - 440T4 Check Ball Location #14 Illustrated
- A/T - Supplement To ATRASIL8725
- A/T - 440T4 Lockup Sleeve Installation
- A/T - 440T4 Intermittent Harsh 3-2 Downshift
- A/T - 440T4 Harsh Apply/Shudder On Reverse Application
- A/T - 440T4 3-2 Downshift Bump/Part Throttle
- A/T - Converter Clutch Solenoid Fluid Source I.D.
- A/T - THM 125C Manual Valve Change/Improved Shift Feel
- A/T - 440T4 Elimination Of Reverse Reation Drum Plate
- A/T - 440T4 Buzzing Noise
- A/T - 440T4 Improved Shift Feel/2nd Clutch
- A/T - THM 125C Sticking TCC Solenoids
- A/T - 3T40/THM 125C Intermittent or No TCC Apply
- A/T - 440T4 Input Sprag Replacement
- A/T - 125/125C Slipping in All Ranges
- 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 - 125C Auxiliary Valve Bodies/Covers and Gaskets
- A/T - 125C Improvement of TCC Apply When Cold
- A/T - 125C Anti-Vibration Strut Use
- A/T - Recurrent Sticking Valves/In Line Filters
- A/T - 125/125C Engine Stalls After Replacing Converter
- A/T - Noisy Converter Or Pump
- A/T - 125C Oil Feed Modification
- A/T - Rapid Converter Pump Bushing Wear
- A/T - Converter Clutch Shudder
- A/T - 125/125C Forward Drum Cautions
- A/T - THM 125 No Second/Third Gear After Overhaul
- 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 - 125C TCC Will Not Release After Warm-Up
- A/T - Pressure Tap Locations
- A/T - 125/125C No Upshift - Governor Pipe Dislodged
- A/T - 125/126C No Second Gear Or Slipping After Rebuild
- A/T - 125/125C ATF Leaking Past Front Seal
- A/T - 125/125 C Intermediate Band Adjustment
- A/T - 125/125C Car Creeps Forward After Overhaul
- A/T - 125C Shifts 1-3 (Skips 2nd)
- A/T - 125C Engine Dies In Gear
- A/T - 125/125C No Second Gear After Rebuild
- A/T - 440T4 No Coasting 2-1 Down Shift
- 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 - 440T4 Location Of Special Torx Bolt W/I.D. Groove
- 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 - 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 - Hard Shifting
- A/T - New Transmission/Transaxle Fluid
- A/T - Servicing Vehicles With Contaminated ATF
- A/T - DEXRON III Fluid Introduction
- A/T - Summary of Shudder Diagnosis
- A/T - No TCC Apply or TCC Shudder
- A/T - 4T60/4T60E Drive Link Noise In Park/Neutral/Drive
- A/T - Use of Petroleum Jelly During Valve Body Service
- A/T - Throttle Valve Lever Return Spring Eliminated
- A/T - THM 440-T4 Second Gear Starts
- A/T - Evaluating Peened Spacer Plates
- A/T - THM 440-T4 Erratic Shifts/No Upshifts
- Drivetrain - Recommended Axle Lubricant
- A/T - Harsh Engagement or Double Bump From P or N to R
- A/T - New 1-2 Band Assembly Does Not Require Stop
- A/T - 4T60 New 1-2 and Reverse Bands
- A/T - New Band Assemblies
- A/T - Harsh Shift, Double Bump, or Shudder
- A/T - Intermittent No Reverse or Locks In Reverse
- A/T - New Servo Spring Retainer Added
- A/T - Case Intermediate Servo Orifice Eliminated
- A/T- 3T40 New Side Cover and Bottom Pan Gasket
- Drivetrain - Drive Shaft Seal Installation Precautions
- Drivetrain - New Seal Protector for Drive Axle R&R
- A/T - Revised End Play Specifications
- A/T - New Thermo Element/Setting Procedure
- M/T - Hydraulic Clutch Bleeding Procedure Improvement
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - 4L60, Revised Sprag/Forward Clutch Hub
- 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