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1998 Am General Hummer TSBs

17 Technical Service Bulletins across 9 categories

Engine

5 bulletins
621768

SOME VEHICLES MAY, AFTER COMING TO A STOP, EXHIBIT A MOMENTARY SMALL INCREASE IN ENGINE IDLE SPEED (APPROX.

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250 RPM). *TT

617804

THIS BULLETIN MENTIONS THAT STARTING WITH THE SEPTEMBER GENERAL MOTORS TIS UPDATE, HUMMER DIAGNOSTIC INFORMATION IS INCLUDED FOR THE TECH 2 SCANNER.

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THE SOFTWARE WILL INCLUDE DIAGNOSTIC TROUBLE CODE (DTC) RETRIEVAL, DATA STREAM ACCESS, SNAP SHOT CAPABILITIES, VIN AND CALIBRATION IDENTIFICATION AND MODULE FLASH CAPABILITIES. *TT

607698

INFORMATION CONCERNING INJECTION TIMING STEPPER MOTOR.

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*AK

601464

INFORMATION ON THE CRANKSHAFT BEARING CAP TORQUE CHANGE.

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*YC

600943

SUBJECT ON CYLINDER HEAD TORQUE SEQUENCE CHANGE.

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ALL VIN Y AND Z VEHICLES. *YC

Other

3 bulletins
618829

INFORMATION ON THE TRAILER TOW KIT.

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*TT

600203

SUBJECT ON REVISED HALFSHAFT MOUNT BOLT TORQUE SPECIFICATION.

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*TT

10007968

WINCH CONTROL PACK. *MJ

Pre-Delivery & Maintenance

2 bulletins
627034

CUSTOMER NOTIFICATION LETTER REGARDING CUSTOMER SATISFACTION CAMPAIGN AMG R0101 - TRANSFER CASE COOLER REPLACEMENT.

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*TT

627030

CUSTOMER SATISFACTION CAMPAIGN AMG R0101 REGARDING TRANSFER CASE COOLER.

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*TT

Fuel System

2 bulletins
610039

SOME 1996 - 1999 VIN Z VEHICLES MAY EXHIBIT A NO START, STALL OR A DIAGNOSTIC TROUBLE CODE P1216 (REPLACE FUEL SOLENOID DRIVER) CURRENT OR IN HISTORY.

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*TT

608158

INFORMATION REGARDING THE NEW SERVICE PART FUEL INJECTION PUMP ASSEMBLY CONTAINS INTERNAL CHANGES FROM PREVIOUS MODEL YEAR PUMPS.

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*TT

Body & Paint

1 bulletin
621771

SUBJECT REGARDING REVISED FRONT DOOR ARMREST.

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*TT

Transmission

1 bulletin
612491

SOME VIN Z VEHICLES WITH VIN 185138 AND BELOW AND WITH TRANSFER CASES BUILT BEFORE MAY 7, 1999 MAY EXHIBIT A...

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TRANSMISSION DEFAULT TO SECOND GEAR, ERRATIC SHIFTING, FAILURE OF THE SPEEDOMETER AND DIAGNOSTIC TROUBLE CODE P1871. *TT

Tires & Wheels

1 bulletin
600997

SUBJECT ON WHEEL ALIGNMENT POLICY.

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*YC

Air Bags & Safety

1 bulletin
600205

VEHICLES MAY HAVE OUTBOARD FRONT SEAT SIDE PLATES THAT COME LOOSE WHEN OCCUPANTS EXIT THE VEHICLE.

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A SIDE PLATE RETAINER KIT P/N 05744877 TO SERVICE TWO FRONT SEATS IS AVAILABLE THROUGH THE DCS. *TT

Suspension

1 bulletin
600202

SUBJECT ON WINCH KIT- FRONT SPRINGS.

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*YC