SPECIAL POLICY:ADJUSTMENT - EXTENDED TRANS. WARRANTY
SPECIAL POLICY ADJUSTMENT - EXTENDED WARRANTY COVERAGE
MODELS: All 1991 Chevrolet and GMC Truck C/K, R/V, P Trucks, and G Vans Equipped With the Hydra-Matic 4L80-E/4L80-EHD Automatic Transmission (RPO MT1)
TO: ALL GENERAL MOTORS DEALERS
General Motors of Canada Limited has determined that all 1991 Chevrolet and GMC Truck C, K, R, V, P trucks and G vans built with the Hydra-Matic 4L80-E/4L80-EHD automatic transmission may experience premature wear and/or failure requiring repair or unit replacement.
This Special Policy Bulletin has been issued to extend the warranty on all involved vehicles.
VEHICLES INVOLVED
Involved are all 1991 Chevrolet and GMC Truck C,/K, R/V, P trucks, and G vans equipped with the Hydra-Matic 4L80-E/4L80-EHD automatic Transmission (RPO MT1) built within the following VIN breakpoints:
Model Year Model From Through --------------------------------------------------------- 1991 C/K SOP EOP 1991 R/V SOP EOP 1991 P truck SOP EOP 1991 G van SOP EOP
SPECIAL POLICY ADJUSTMENT
The warranty on Hydra-Matic 4L80-E/4L80-EHD transmission has been extended from 36 months or 80,000 km, whichever comes first, to 60 months or 120,000 km, whichever comes first. The $100.00 deductible associated with the 36 month/80,000 km warranty has also been eliminated for this extended warranty period.
Additionally, a customer reimbursement policy has been established. This policy will provide reimbursement for any customer paid 4L80-E/4L80-EHD transmission repair from the date of delivery until 60 months or 120,000 km, whichever occurs first. The $100.00 deductible is included in the reimbursement policy.
OWNER NOTIFICATION
Owners will be notified of this Special Policy Adjustment on their vehicles by General Motors of Canada (see the sample copy of an owner letter included with this bulletin).
REIMBURSEMENT
Customer claims for reimbursement on previously paid 4L80-E/4L80-EHD transmission repair, including the $100.00 deductible, are to be submitted by May 31, 1995. Owners must submit original documentation that reasonably confirms the amount of unreimbursed repair expense, a description of the repair, the date of the repair, and the person or entity who performed the repair. Claims for customer reimbursement on previously paid repairs are to be submitted as a Net Item Dollar Amount on a Warranty Claim.
SERVICE PROCEDURE
Dcalers to refer to the appropriate 1991 Truck Service Manual for the correct service procedures.
SERVICE PROCEDURE LAWS
New Service Policy Permits On-Car Service or SRTA ONLY.
ONLY limited on-car repairs or SRTA will be the service options available for vehicles currently covered under the warranty period.
Conditions when SRTA usage is appropriate:
Any repairs that cannot be completed by replacement of the parts shown in Figure 1.
Dealer HYDRA-MATIC 4L80-E Transmission repairs include:
Limited on-vehicle serviceable items. Reference Figure 1.
Parts needed to perform limited on-vehicle service on a HYDRA-MATIC 4L80-E Transmission are available through your local Parts Distribution Center (PDC).
IMPORTANT: Do not attempt repairs on a 1991 HYDRA-MATIC 4L80-E, unless the part is shown in Figure 1 and listed in the repairs parts list in this bulletin. All returned HYDRA-MATIC 4L80-E transmissions will be disassembled and inspected in an effort to increase product integrity. Attempting repairs could destroy root cause analysis data.
The Rear Internal Gear Campaign Bulletin #2N17 dated September 1992 will not be affected by this bulletin. Continue to implement this campaign. A SRTA should NOT be used to complete this campaign. This is the only exception.
COOLER FLUSHING
Cooler flushing and a flow check MUST be performed whenever a transmission is removed for service. It is essential to flush the cooler prior to a SRTA installation, or when fluid contamination is suspected. Use Kent-Moore tool J35944 and solvent J 35944-20 to flush the cooler. Instructions are published in each Service Manual On-Vehicle Service Section.
PARTS INFORMATION
Parts required to complete the service procedure are to be ordered through regular channels.
1991 HYDRA-MATIC 4L80-E/4L80-EHD ON-VEHICLE SERVICEABLE COMPONENTS: ------------------------------------------------------------------
Part Number Illustration No. Description --------------------------------------------------------- 8685042 22 Sensor Asm., A/Trans. Input Spd. & Veh. Spd. 11508805 23 Bolt, Metric Hex (Speed Scnsor) 11514343 27 Bolt, Hex Flange (Pan to Case)
8679931 28 Pan, Transmission Oil 8685921 85 Part Asm., Transmission Oil (Some Models) - (Includes Magnet) 8675529 82 Drain Plug Asm., Oil Pan (Some Models) 00116103 83 Washer, Type A Flat Gasket (Some Models)
8677743 29 Seal, Transmission Oil Pan
8654701 30 Magnet, Chip Collector 8684221 31 Filter Asm., Transmission Oil 8656613 32 Seal Assembly, Filter Neck 24200161 34 Pkg. - Electrical Wiring Harness Asm.
24200695 40 Switch Asm., Fluid Pressure
8676222 76 Bolt, Special
24201005 311 2-3 Shift Solenoid & 0-Ring Asm.
24201004 313 1-2 Shift Solenoid & 0-Ring Asm.
8677314 320 Pressure Control Solenoid
8683188 323 TCC PWM Solenoid
Part numbers are accurate at the time of printing and are subject to change. Refer to the latest GMSPO Parts Catalogue for part numbers of SRTA models and service parts.
WARRANTY CLAIM INFORMATION
When performing the repair as outlined in this Special Policy, the dealer is requested to submit a Warranty Claim for credit as follows:
Parts Labour Labour Add Description Allow. OP Hours Time ---------------------------------------------------------- Sensor Assembly * T-7721 .8 Sensor Assembly Vehicle Speed/Bolt * T-7722 .8 Pan-Trans Oil Drain Plug, Gasket/Seal, * T-7726 .5 .1 Magnet, Filter/Seal Electric Wiring Harness * T-7727 .6 Switch - Fluid Pressure * T-7728 .9 2-3 Shift Solenoid & O-Ring Assembly * T-7731 .8 1-2 Shift Solenoid & O-Ring Assembly * T-7732 .8 Pressure Control Solenoid * T-7733 .8 TCC PWM Solenoid * T-7734 .8 SRTA Replacement * T-7741 ** Reimbursement - T-7746 0.2***
* The "PARTS ALLOWANCE" should be the sum total of the current GMSPO dealer net price plus 30% handling allowance of all parts required for the repair.
** Labour hours should be the same as those shown in the Labour Time Guide for like operations. All add conditions apply as described in the Labour Time Guide.
*** 0.2 hour dealer administrative allowance which is entered as other labour hours in the Warranty Claim Submission. The appropriate customer reimbursement is to be entered in the claim submission with the current order date and the current odometer reading and as a net dollar amount.
Dear General Motors Customer
General Motors of Canada has determined that all 1991 Chevrolet and GMC Truck (C/K, R/V, P trucks, and G vans) built with Hydra-Matic 4L80-E/4L80-EHD automatic transmissions may experience premature wear and/or failure requiring repair or unit replacement. General Motors of Canada has extended the warranty on these transmissions (from 36 months or 80,000 km) to 60 months or 120,000 km, whichever occurs first. In addition, the $100.00 deductible for these transmission repairs has been eliminated during this special policy period. This policy does not apply if the repair was due to an accident, improper maintenance, or misuse.
If you previously have had the 4L80-E/4L80-EHD transmission in your vehicle repaired, and paid for all or part of the repair cost (including the $100.00 deductible), you should request reimbursement by contacting your General Motors dealer. Please provide your original paid receipts or invoices verifying the repair, the amount charged, proof of ownership, proof of your payment and date of payment. This information must be provided by May 31, 1995.
If your vehicle has not had any transmission repairs, do nothing at this time. Just place this letter in the glove box with your Owner's Manual and other warranty information in case you should need to take advantage of diis policy in the future.
General Motors of Canada is taldng this action in the interest of your continued satisfaction with our products.
Customer Support Department General Motors of Canada Limited
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.
