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Service bulletin 020730048

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10006166
Published by NHTSA2004-04-23
Manufacturer's number020730048
Manufacturer's date2002-11-02
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

PRESSURE CONTROL SOLENOID REPLACEMENT FOR 4T65-E, 4T40-E, AND 4T45-E TRANSAXLE/TRANSMISSION.*MR

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Axle

Vehicles listed
BUICK CENTURY2000, 2001, 2002, 2003
BUICK RENDEZVOUS2002, 2003
CHEVROLET CAVALIER2000, 2001, 2002, 2003
CHEVROLET IMPALA2000, 2001, 2002, 2003
CHEVROLET LUMINA2000, 2001
CHEVROLET MALIBU2000, 2001, 2002, 2003
CHEVROLET MONTE CARLO2000, 2001, 2002, 2003
CHEVROLET VENTURE2000, 2001, 2002, 2003
OLDSMOBILE ALERO2000, 2001, 2002, 2003
OLDSMOBILE INTRIGUE2000, 2001, 2002
OLDSMOBILE SILHOUETTE2000, 2001, 2002, 2003
PONTIAC AZTEK2001, 2002, 2003
PONTIAC BONNEVILLE2000, 2001, 2002, 2003
PONTIAC GRAND AM2000, 2001, 2002, 2003
PONTIAC GRAND PRIX2000, 2001, 2002, 2003
PONTIAC MONTANA2000, 2001, 2002, 2003
PONTIAC SUNFIRE2000, 2001, 2002, 2003

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PIP3720D2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician with the axel setup information from American Axle Manufacturing. Technician should be advised that the maximum pinion shim to be used or stacked behind the pinion is 0.050?, and the minimum pinion shim is 0.020? for an 8.6 axle. The range for available pinion depth shims for the 10.5? axle is 0.006? to 0.024?. When setting the backlash it should be set between 0.003? to 0.005? on a new ring and pinion for any American Axle Manufacturing application. The ring and pinion can be reused or adjusted if the mileage is less than 500 miles, if not used for towing. Technician should be advised that a ?roller coaster? or ?hourglass? pattern on the bearings may be normal up to 10,000 miles and possibly longer. With a mis-machined housing you may get a heel pattern on both sides of the gear teeth at build up can generally be corrected with backlash adjustments. When setting up an 8.6? axle with a 5 cut gear set is to use a 0.035? pinion shim and set backlash to 0.004?. When using the newer 2 cut gear set also use a 0.035? pinion shim and still set backlash to 0.004?. To set the gear pattern use backlash to adjust the pattern heel to toe. Use the pinion shim to adjust the height of the pattern. The proper drive pinion bearing pre-load is from 15 - 30 inch pounds with new bearings. The total torque to turn after the differential case is installed should increase 5 - 10 inch pounds at the pinion. A new pinion nut must be used whenever the old one is removed. The axle shaft end play specification is 0.012? per side and the radial specification is 0.002? - 0.003?. Technician should be advised that synthetic lube can be used in all new American Axle Manufacturing axle assemblies. The new pinion seal for the 8.6? axle assembly is a two piece design.
33822005-05-12. Service bulletin. 4T65E (MN7) TRANSMISSION FLUID LEAK ON RIGHT SIDE AXLE SEAL. *TT
0404170012005-01-11. Service bulletin. BOOM OR DRONE NOISE AT 2100 RPM OR ABOUT 120 KM/H (75 MPH). *TT
0103032003-09-06. Service bulletin. INFORMATION USED WHEN SERVICING THE DRIVE AXLE NUT. *TT
010312001-05-29. Service bulletin. SUBJECT REGARDING CLARIFICATION TO CUSTOMER SATISFACTION CAMPAIGN FOR 4T40-E TRANSAXLE CONVERTER BEARING FAILURE INSPECTION / REPLACEMENT. *TT
010312001-05-29. Service bulletin. SOME VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE TRANSAXLE CONVERTER PUMP TO STATOR BEARING MAY PREMATURELY FAIL, DUE TO A RAISED METAL CONDITION ON THE BEARING SURFACE ON THE INSIDE OF THE PUMP COVER. *TT
990730030A2001-05-24. Service bulletin. OWNERS OF SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60, 4T60-E OR 4T65-E TRANSAXLES MAY COMMENT ON A GRINDING AND / OR GROWLING NOISE THAT IS NOTICEABLE WHEN STANDING IN PARK ON A HILL OR SLOPE WITH THE ENGINE RUNNING AND THE PARKING BRAKE NOT APPLIED. *TT
0104200022001-05-17. Service bulletin. SUBJECT REGARDING EXCHANGE PROGRAM FOR 2001 MODEL YEAR (TRANSFER CASE / REAR DIFFERENTIAL). *TT
0101012001-05-10. Service bulletin. GM POWERTRAIN IS CURRENTLY SEEKING INFORMATION REGARDING RIGHT SIDE (PASSENGER) AXLE LEAKS ON THE 4T65E TRANSMISSION. *TT
0101012001-04-04. Service bulletin. CONCERNS WITH 4T40E / 4T45E FOUR SPEED AUTOMATIC TRANSAXLES WITH ATF LEAKS AT EITHER THE COOLER LINE SEALS OR AT ONE OR BOTH AXLE SEALS. *JB