Info - AISIN Transmission Quality Center (TQC) Program
| Subject: | AISIN Transmission Quality Center (TQC) Program |
| Models: | 2007-2008 Chevrolet W-Series Medium Duty Tilt Cab Models |
| 2007-2008 GMC W-Series Medium Duty Tilt Cab Models |
| 2007-2008 Isuzu NPR/NQR Commercial Medium Duty |
| with 4HK1-TC Diesel Engine and New or Remanufactured Aisin Automatic Transmission |
This bulletin is being revised to update the models involved and the TQC program. Please discard Corporate Bulletin Number 03-07-30-004D (Section 07 -- Transmission/Transaxle).
Important: 'GM of Canada' dealers are not authorized to utilize this service bulletin.
In order to improve the quality of the original equipment manufacturer (OEM) and service replacement transmission assemblies, the transmission quality center (TQC) is being implemented to assist dealers whenever an AISIN transmission assembly (Isuzu P/Ns 2-90525-870-0 / 2-90525-860-0 / 2-90525-840-0 (GM P/Ns 97779535 / 97779298 / 97729085 and all supersessions) is thought to require replacement.
The primary purpose of the TQC is to obtain faster and more accurate quality information on all 2007-2008 failed transmission assemblies. The collected information will be used to improve the reliability of OEM and service transmission assemblies.
Included in this program are all 2007-2008 OEM and 2007-2008 Remanufactured assemblies replaced under warranty and policy, service assemblies (Claim Type B) extended service contracts and over-the-counter assembly replacements beginning on April 1, 2007.
Dealers needing to replace an AISIN transmission assembly (Isuzu P/Ns 2-90525-870-0 / 2-90525-860-0 / 2-90525-840-0 (GM P/Ns 97779535 / 97779298 / 97729085 and all supersessions) must request authorization prior to replacing the transmission. In order to receive authorization, submit your request to the TQC online at www.isuzutruckservice.com.
Important: Online submissions must be complete, including a return e-mail address or dealer fax number in order to receive the authorization number. Incomplete forms will delay the authorization process.
Please be prepared to provide the following information:
All information and measurements are to be made before replacing the Transmission assembly.
| • | Dealer code |
| • | Dealer name |
| • | VIN |
| • | Mileage |
| • | RO# |
| • | Transmission Serial Number |
| • | Vehicle Body Type |
| • | Customer comments |
| • | Road test results |
| • | Technician diagnostics (including all test measurements, DTCs, repair history, transmission oil cooler flow rate) |
| • | Fluid level |
| • | Fluid condition |
| • | Mileage of last transmission service |
| • | Towing |
| • | APP sensor voltages |
| • | Trans cooler flow rates |
| • | Transmission line pressures |
| • | Stall test (at D-Range, at R-Range) |
| • | Replacement parts information other than A/T assy (e.g. ECU...) |
A worksheet has been provided (see attached) to help dealer personnel gather the required information. Some additional requests may be made based on the provided information, requiring a follow-up phone call.
Once the dealer is authorized to replace a transmission, the TQC will issue an authorization number. It is important that this number be added into the warranty claim. Unauthorized transmission replacements will not be reimbursed.
Online access is available 24 hours a day at www.isuzutruckservice.com. The TQC will be available for live assistance Monday through Friday from 8am-5pm (Eastern Time). Contact the TQC at 1-866-309-8324.
Core Return Procedures
In ALL cases, the TQC will request the failed transmission be returned for tear-down investigation. Please follow the procedure below to properly return these requested transmissions.
Return Procedure for TQC Requested Transmissions
Important: Transmissions requested by the TQC will be picked up by Roadway Trucking at NO COST to the dealer. Be sure that the transmission is ready for pick-up at the requested time.
- Obtain an authorization number from the TQC.
- Drain the core and place in the Transmission Black Box for return.
- Receive Fax paperwork from the TQC for shipment. This will include one Bill of Lading (BOL) and one receipt for the core.
- Contact the TQC when the package is ready for pickup.
- Load the transmission assembly into trailer (Roadway Trucking).
Core credit will be issued when the transmission is received by the TQC.
Transmission Diagnostic Information
If normal diagnostic assistance is needed, dealers should call the GM Medium Duty Technical Assistance Center at 1-800-633-4863 - Technical Assistance Center - Prompt 3.
Below is a list of common procedures and check points that may be helpful in the diagnosis of transmission concerns. These items should be reviewed if applicable.
| • | Perform transmission cooler lines and cooler flush. |
| • | Advise the Technician to inspect the transmission cooler flow rate and thoroughly flush the transmission cooler and the attached lines prior to installing the replacement transmission. |
| • | Advise the Technician to verify that the engine block dowel pins are correctly installed in the engine and that the torque converter has been properly installed in the transmission and seated correctly into the pump. |
Warranty Submission
When submitting warranty claims, be sure to add the TQC authorization number in the comments section. The claim must then be "H" routed to the DSPM. The DSPM must see the TQC authorization code in order to authorize the claim for payment.
Labor Operation | Description | Time Allowance |
|---|---|---|
K7000 | Transmission Assembly - R&R (includes flush cooler, Initial Learn and Failure Information Collection | Refer to the Labor Time Guide |
AFTER TRANSMISSION REPLACEMENT, PLEASE BE SURE TO COMPLETELY FILL OUT THE RETURN CORE TAG.
AISIN DIAGNOSTIC/CORE FORM This form must be completed before replacing transmission assembly and returned with each transmission core to receive full core, parts and warranty credit. | |
|---|---|
FAILED TRANSMISSION (CORE) | |
Dealer Code:
| Dealer Name:
|
Contact Number:
Contact Person:
| Fax Number:
|
VIN (last eight digits):
| Vehicle Mileage:
|
Body Type:
| Failed transmission serial no.:
|
RO #:
RO date:_________ / ___________ / __________ | |
Was vehicle towed into shop? Circle one -- YES NO If yes, how many miles was it towed?
If yes, was the driveshaft removed during towing? Circle one - YES NO
If not removed, how was it towed? Circle one -- From Rear Flatbed From Front Drive Shaft Installed
| |
Customer's comments, repair history and reason for replacing transmission:
| |
Condition of fluid: Circle one -- Good/Clean Milky Discolored Dark/Dirty Burnt
Does the speedometer work during driving? Circle one -- YES NO
| |
ATF Level cold "C": Circle one -- YES NO -- OK low high
ATF Level hot "H" Circle one -- YES NO -- OK low high | |
Did the concern occur after prior Transmission Repairs? Circle one -- YES NO
Any indication of water or coolant on the dipstick? Circle one -- YES NO
Any external ATF leakage visible? Circle one -- YES NO
If yes, were there any transmission DTCs? List DTCs:
Does the engine perform normally (power, acceleration, idle speed, idle smoothness)? Circle one -- YES NO If No, please describe:
Any modifications/accessories added to the vehicle that may have caused the transmission to malfunction (altered wheelbase, electrical devices connected to transmission/TCM harness, PTO, etc.)? Circle one -- YES NO If yes, please describe:
Before replacing the transmission, perform the "Transmission Oil Cooler Flushing" and ATF Flow Procedure described in Corporate Bulletin Number 03-07-30-060A.
Record ATF flow rate results:
_______________ pints per 10 seconds OR ______________ liters per 10 seconds Specifications: 2.0 pints (1.0L)/10 seconds Line pressure test results:
"D" @ Idle:_______________ psi
"R" @ Idle:______________ psi
Accelerator Pedal Position Opening Sensor voltage and angle %:
(IDLE) APP1___________APP2 __________Indicated Angle%______________ (WOT) APP1___________APP2 __________Indicated Angle%______________ | |
Last four digits of technician's social security number: _____ _____ _____ _____ Technician's Signature:
Date: _______ / _______ / _______ | |
NOTE: ALL FLUID MUST BE DRAINED PRIOR TO RETURNING THIS CORE. | |
