CAMPAIGN : REAR AXLE SHAFTS MAY BREAK
The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation.
To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule an appointment with each owner and to repair their vehicle as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owners are being instructed to contact the nearest Chevrolet Zone office if their dealer does not remedy the condition within five days of the mutually agreed upon service date. If the condition is not remedied within a reasonable time, they are instructed on how to contact the National Highway Traffic Safety Administration.
DEFECT INVOLVED
General Motors has determined that a defect which relates to motor vehicle safety exists in the rear axle shafts installed in some 1982 C,K20 and P20 Series Light Duty Trucks equipped with a 9 1/2" ring gear rear axle.
The rear axle shafts in these vehicles may have been improperly heat treated. As a result, the shaft may break which could allow the tire and wheel assembly to separate from the vehicle. If this occurs while the vehicle is in motion, it could result in a loss of control and a vehicle crash could occur without prior warning.
VEHICLES INVOLVED
Involved are certain 1982 C,K20 and P20 Series Light Duty Chevrolet Trucks equipped with a 9 1/2" ring gear rear axle and identified within the following vehicle breakpoints: GSD 148C
Plant From To
Detroit C3317289 C3320403 Oshawa C1190443 C1200398 St. Louis CS160960 CS167639 Flint #1 CF349843 CF363936 Flint #2 CF144267 CF147467 Janesville CJ143215 CJ150713
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to the involved dealers with the campaign bulletin. owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin was not shipped any involved vehicles.
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of Owner Letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY
Dealers are to service all vehicles subject to this campaign, regardless of mileage, age of vehicle, or ownership, from this time forward.
Whenever a vehicle subject to this campaign is taken into your new or use vehicle inventory or it is in your dealership for service in the future, you should take steps necessary to be sure the campaign correction has been made.
SERVICE PROCEDURES
Suspect Axle Assembly Identification The only axle assemblies involved are those produced at Chevrolet Gear and Axle.
Dealers are to inspect all involved vehicles identified on the computer printout furnished to determine the source code, axle code and date code of the axle assembly. (Refer to Example)
LIGHT DUTY TRUCK REAR AXLE IDENTIFICATION
EXAMPLE
TKK 001 G 1
Axle & Vehicle Code Date Code Source Code Shift Code
Jan. 1 = 001 G = Gear & Axle 1st Shift
CODE IS STAMPED ON TOP OF RIGHT AXLE TUBE OUTBOARD OF CARRIER.
Axle assemblies with source code "G" and date codes of 134 through 161 will require the replacement of both right and left rear axle shafts.
Inspection
1. Raise vehicle and locate the axle code which is stamped on top of right axle tube outboard of carrier. (Refer to Example).
A. When the source code is "G" and the date code is lower than 134 or higher than 161, lower the vehicle, no further action is required, vehicle is not involved.
B. When the source code is "G" and the date code is 134 through 161, proceed with Correction and Installation Procedures.
REMOVAL PROCEDURE
1) Remove wheel and tire assemblies and brake drums.
2) Clean all dirt from around carrier cover.
3) Drain lubricant from carrier by removing cover.
4) Open Axles
a. Remove the differential pinion shaft lock screw and the differential pinion shaft.
b. Push flanged end of axle shafts toward center of vehicle and remove "C" locks from button end of shafts.
c. Remove axle shafts from housing, being careful not to damage oil seals.
Locking Axles
a. Rotate the case to the position shown in Figure 1. Support the pinion shaft so that it cannot fall into the case and then remove the differential pinion shaft lock screw.
b. Carefully partial withdraw the differential pinion shaft as shown in Figure 2 and rotate the case until the shaft touches the housing.
c. Reach into the case with a screwdriver or similar tool and rotate the "C" lock until its open end points directly inward as shown in Figure 3. The axle shaft cannot be pushed inward until the "C" lock is properly positioned. Do not force or hammer the axle shaft in an attempt to gain clearance.
d. When the "C" lock is positioned to pass through the end of the thrust block, push the axle inward as shown in Figure 4 and remove the "C" lock.
e. Remove the axle shaft, being careful not to damage the oil seal and repeat Steps C through E for the opposite axle shaft. When removing axle shafts, be sure the thrust washers in the differential case do not slide out.
INSTALLATION PROCEDURES
1. Utilizing a suitable arbor press, remove the bolts from the old axle shafts. Discard old shafts and reinstall bolts in new shaft, P/N 14035395.
2. Slide axle shafts into place. Be sure that splines on end of shaft do not damage oil seals and that they engage with splines of differential side gears.
3. Install axle shaft "C" locks on button end of axle shafts and push shafts outward so that "C" locks seat in counter bore of the differential side gears.
4. Position differential pinion shaft through pinion gears and case aligning hole in shaft with lock screw hole in the case. Install lock screw and torque to 20 ft. lbs.
5. Clean both the cover attaching surface of the carrier and cover of old RTV. Apply a 1/8" continuous bead of RTV, P/N 1052366, to the cover inboard of the bolt holes.
6. Position cover and secure in position torquing bolts to 20 ft. lbs.
7. Fill axle with 5.5 pints of gear lubricant, P/N 1052271 (24 oz. container) or P/N 1052272 (15 gal. container). Do not use additive.
8. Install brake drums and wheel assemblies torquing wheel nuts to 100 ft. lbs.
9. Lower vehicle and test operation of axle.
10. Install campaign label according to instructions contained in this bulletin.
PARTS INFORMATION
Parts when required to complete this campaign are to be ordered from the Warehousing and Distribution Division of General Motors (WDDGM).
Quantity Per Part Number Vehicle Description ---------- ----------- --------------- 14035395 2 Rear Axle Shaft
Defective axle shafts removed by the dealer from the involved vehicles will be properly tagged and held for scrapping by the Chevrolet Service Representative.
CLAIM INFORMATION
Submit a Product Claim with the information indicated below:
Parts Failed Parts Failure Labor Labor *Other Count Part No. Allowance Code Operation Hours Hours ----- ------- --------- ------ --------- ----- ------ 00 V1330 .2 .1
Description: Inspect rear axle assembly for source, axle and date code. Codes not requiring axle shaft replacement as identified in this bulletin indicate no further action required.
2 14035395 00 V1331 1.4 .1
Description: Inspect, replace both rear axle shafts (includes transfer of wheel bolts) when vehicle is within breakpoints with codes requiring axle shaft replacement. Dealer Material Allowance $12.11 which includes 30% (DMN).
*Campaign Administrative Allowance
Dealers will automatically receive the correct labor and material allowance plus 30% based on the labor operation performed.
Refer to the Chevrolet Claims Processing Manual for details on Product Campaign claim submission.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle modified in accordance with the instructions out- lined in this Product Campaign Bulletin will require a "Campaign Identification Label". Each label provides a space to include the five digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint pen.
Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner.
Apply "Campaign Identification Label" only on a clean dry surface.
ADMINISTRATIVE PROCEDURE
REFER TO THE CURRENT CHEVROLET SERVICE POLICIES AND PROCEDURES MANUAL AND CLAIMS PROCESSING MANUAL FOR CAMPAIGN HANDLING AND ADMINISTRATIVE PROCEDURES.
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.
