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Service bulletin 4255

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 id10020580
Published by NHTSA2006-11-20
Manufacturer's number4255
Manufacturer's date2006-10-06
NHTSA componentELECTRICAL SYSTEM:STARTER ASSEMBLY

NHTSA's summary

INTERMITTENT NO CRANK STARTER CLICKS OR VEHICLE STARTS TO CRANK THEN STOPS CRANKING. CRANK DRIVEABILITY DTC ELECTRICAL ENGINE IMS INTERMITTENT INTERNAL LS4, LZ4, LZ8. *KB

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

Electrical system, Starter

Vehicles listed
CHEVROLET IMPALA2006, 2007
CHEVROLET MONTE CARLO2006, 2007

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
08-07-30-026C2017-08-15. Service bulletin. This informational bulletin provides information on vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak and that this is considered a normal conditon and no repairs are necessary