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Service bulletin PIT-4748

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 id10030673
Published by NHTSA2009-11-10
Manufacturer's numberPIT-4748
Manufacturer's date2008-11-01
NHTSA componentEXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:BRAKE LIGHTS

NHTSA's summary

CHEVROLET/GMC: SOME VEHICLE UPFITTERS, PRIOR TO COMPLETION OF THEIR WORK ON THE INCOMPLETE VEHICLE (CUTAWAY VANS), MAY COMMENT THAT THE RIGHT REAR TURN SIGNAL AND STOP LAMPS ARE BOTH INOPERATIVE. THIS CAN BE CAUSED IF CIRCUIT 6519 IS IN THE WRONG CAVITY ON CONNECTOR X2 AT THE UNDERHOOD FUSE BLOCK. *PE

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

Lighting, Brake lights, Turn signals

Vehicles listed
CHEVROLET EXPRESS2009
GMC SAVANA2009

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
PIT5125A2023-12-11. Service bulletin. Available Stop And Turn Lamp Options/Diagnostic Information
PIT5125D2019-03-18. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles proper operation of the stop and/or turn signals. For vehicles without Regular Production Option Code V4D circuit 618 is for the left stop and turn signal and circuit 619 dark green is for the right stop and turn signal. For vehicles with Regular Production Option Code V4D circuit 618 yellow is for the left turn signal only. Circuit 619 dark green is for the right turn signal only and circuit 1320 light blue is for the stop lamps only.
PIT5125C2018-01-16. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles proper operation of the stop and/or turn signals. For vehicles without Regular Production Option Code V4D circuit 618 is for the left stop and turn signal and circuit 619 dark green is for the right stop and turn signal. For vehicles with Regular Production Option Code V4D circuit 618 yellow is for the left turn signal only. Circuit 619 dark green is for the right turn signal only and circuit 1320 light blue is for the stop lamps only.
02-08-42-001I2017-08-31. Service bulletin. This informational bulletin provides an out line on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage and what should be considered warranty replacement and not
PIT5125B2017-05-22. Service bulletin. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES PROPER OPERATION OF THE STOP AND/OR TURN SIGNALS. FOR VEHICLES WITHOUT REGULAR PRODUCTION OPTION CODE V4D CIRCUIT 618 IS FOR THE LEFT STOP AND TURN SIGNAL AND CIRCUIT 619 DARK GREEN IS FOR THE RIGHT STOP AND TURN SIGNAL. FOR VEHICLES WITH REGULAR PRODUCTION OPTION CODE V4D CIRCUIT 618 YELLOW IS FOR THE LEFT TURN SIGNAL ONLY. CIRCUIT 619 DARK GREEN IS FOR THE RIGHT TURN SIGNAL ONLY AND CIRCUIT 1320 LIGHT BLUE IS FOR THE STOP LAMPS ONLY.