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Service bulletin 18-027-08

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 id10025149
Published by NHTSA2008-07-14
Manufacturer's number18-027-08
Manufacturer's date2008-06-24
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

FLASH: TORQUE CONVERTER SHUDDER OR HIGH CABIN TEMPERATURES ON START-UP. *NJ

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

Vehicles listed
DODGE NITRO2008
JEEP LIBERTY2008

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
S1121000006RevA2022-09-26. Service bulletin. (Revision A) No Start No Crank ? Starter Will Not Engage And There Are No Related Codes Or Concerns
S1121000006 Rev.2020-09-28. Service bulletin. (Revision A) No Start No Crank ? Starter Will Not Engage And There Are No Related Codes Or Concerns
21-018-082008-10-03. Service bulletin. CHRYSLER/DODGE/JEEP: FLASH:DIAGNOSTIC TROUBLE CODE, DTC P0740 OR P1798 AND AUTOMATIC TRANSMISSION SHIFT IMPROVEMENTS 1-2 OR 2-3 COLD SHIFT IMPROVEMENTS. *PE
18002082008-03-04. Service bulletin. FLASH: ROUGH IDLE AND DROP IN ENGINE SPEED UPON GEAR ENGAGEMENT AFTER COLD START. *NJ