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Service bulletin 3815

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 id10018925
Published by NHTSA2006-01-25
Manufacturer's number3815
NHTSA componentELECTRICAL SYSTEM:WIRING

NHTSA's summary

INSTALLING TRAILER WIRING HARNESS WITHOUT THE Z82 OPTION. *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

Electrical system, Wiring and fuses

Vehicles listed
CHEVROLET EXPRESS2003, 2004, 2005, 2006
GMC SAVANA2003, 2004, 2005, 2006

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

Recalls for the same vehicles and component
23V2470002023-04-06. ELECTRICAL SYSTEM:WIRING

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
10-00-89-005C2018-06-04. Service bulletin. This informational bulletin is a revision for 10-00-89-005B to add the 2014 model year and labor codes.
18NA1022018-05-21. Service bulletin. This technical bulletin provides a procedure to repair a possible wiring harness repair if damaged by the parking bark, brake booster mount or brake pedal bolt.
13-08-116-0012018-04-16. Service bulletin. This technical bulletin provides a procedure on suspected tampering due to aftermarket ALDL or DLC interface devices causing multiple issues.
TSB T2007-01 REV2017-03-27. Service bulletin. INTELLIGENT LIFE INTERLOCK SYSTEM (ILIS) THE SHIFT LOCK STATUS LED (AMBER) FLASHES AND THE SFHIFTER DOES NOT LOCK WITH THE PARK BRAKE ON AND /OR THE LIFT DOOR OPEN. THIS WILL ONLY OCCUR IF THE VEHICLE BATTERY VOLTAGE DROPS BELOW 7.5 VOLTS DURING ENGINE CRANKING.
SB-09-06-03-004A2010-03-06. Service bulletin. GM/HUMMER/SAAB: INTERMITTENT ILLUMINATION OF MIL, SERVICE LAMPS, SERVICE MESSAGES, OR DTC SET BY VARIOUS CONTROL MODULES-DIAGNOSING AND REPAIRING FRETTING CORROSION (DISCONNECT AFFECTED CONNECTOR AND APPLY DIELECTRIC LUBRICANT). *PE UPDATED 3/26/10. *PE UPDATED 6/6/11. *PE UPDATED 3/12/12. *PE
TB-09-06-04-0222009-08-04. Service bulletin. GENERAL MOTORS: MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, INTERMITTENT DTC P0191, SLOW FUEL RAIL PRESSURE (FRP) DECAY, WIRING HARNESS CONNECTIONS, VOLTAGE FLUCTUATIONS/INTERRUPTIONS (FOLLOW CORRECTION INFORMATION BELOW). *PE UPDATED 11/23/09. *PE
070952008-01-10. Service bulletin. ENGINE COMPARTMENT FUSE BLOCK COVER ON SOME 2003-2007 CHEVROLET EXPRESS AND GMC SAVANA VEHICLES MAY BREAK WHEN THE COVER IS REMOVED, ALLOWING WATER AND ROAD CONTAMINATES TO ENTER THE FUSE BLOCK. *NJ