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Service bulletin 48

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 id606601
Published by NHTSA1999-08-30
Manufacturer's number48
Manufacturer's date1999-06-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

INFORMATION ON REPROGRAMMING PASSWORD FOR HARSH 3-2 DOWNSHIFT AND DIAGNOSTIC TROUBLE CODE (DTC) P0120. *TT

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, Automatic transmission, Transmission control module

Trouble codes named

P0120

Vehicles listed
MITSUBISHI GALANT1999

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

Recalls for the same vehicles and component
01V0110012001-01-16. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
05230042005-10-04. Service bulletin. 2-3 SHIFT FLARE. *TT
050120042005-05-02. Service bulletin. 2-3 SHIFT FLARE. *EH
03230062003-12-15. Service bulletin. TORQUE CONVERTER SHUDDER, SURGE, AND/OR VIBRATION (POSSIBLY INTERMITTENT) WHEN DRIVING 35-50 MPH AT STEADY THROTTLE. *TT
TSB02230032002-10-18. Service bulletin. THIS BULLETIN REVISES THE TIGHTENING TORQUE VALUES FOR THE TRANSMISSION OUTPUT SHAFT RETAIN BOLTS AND THE TRANSMISSION OIL PUMP MOUNTING BOLTS. *TT
02130152002-10-01. Service bulletin. SUBJECT REGARDING POWERTRAIN CONTROL MODULE REPROGRAMMING FOR COLD ENGINE MISFIRE. *JG
TSB01230102001-10-17. Service bulletin. SOME CUSTOMERS MAY COMPLAIN OF SHUDDER, SURGE, AND / OR VIBRATION WHEN DRIVING 35 - 50 MPH AT STEADY THROTTLE. THIS CONDITION MAY BE DUE TO THE BREAKDOWN OF THE SPII A/T FLUID, CREATING A TORQUE CONVERTER DAMPER CLUTCH SHUDDER. *TT
TSB01000082001-07-02. Service bulletin. MITSUBISHI MOTORS DEALERS WHO HAVE THE MEDIC SYSTEM CAN REPROGRAM THE RED ROM PACK USED FOR REFLASHING VARIOUS VEHICLE'S PCMS. *TT
TSB00230022000-05-05. Service bulletin. SOME CUSTOMERS MAY COMPLAIN OF A SMALL AMOUNT OF AUTOMATIC TRANSMISSION FLUID (ATF) SEEPING FROM THE AUTOMATIC TRANSMISSION DIPSTICK. *TT
99230102000-01-06. Service bulletin. THIS BULLETIN CONTAINS RECOMMENDED AUTOMATIC TRANSMISSION / TRANSAXLE MAINTENANCE INFORMATION. *TT
481999-08-30. Service bulletin. MUT-II ROM PACK ROUND-UP. *TT