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Service bulletin 02013

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 id10007119
Published by NHTSA2004-05-26
Manufacturer's number02013
Manufacturer's date2004-01-01
Replaces02013A
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

COOLANT LEAK FROM HEAD CUP PLUGS ON GEN III ENGINES. *MR

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

Engine, Cooling system

Vehicles listed
CADILLAC CTS2004
CADILLAC ESCALADE2003, 2004
CADILLAC ESCALADE EXT2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE2003, 2004
CHEVROLET CORVETTE2003, 2004
CHEVROLET SILVERADO2003, 2004
CHEVROLET SUBURBAN2003, 2004
CHEVROLET TAHOE2003, 2004
GMC SIERRA2003, 2004
GMC YUKON2003, 2004
GMC YUKON XL2003, 2004
PONTIAC GTO2004

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
0506020052006-01-10. Service bulletin. COOLANT LEAK (REPLACE RADIATOR). *JB
31212004-11-08. Service bulletin. EXHAUST VIBRATION RESONANCE OR MOAN IN VEHICLES WITH GEN III V8 ENGINES. *TC
3121A2004-11-03. Service bulletin. EXHAUST VIBRATION RESONANCE OR MOAN 99-05 FULL SIZE TRUCKS AND UTILITY VEHICLES WITH GEN 3 V-8 ENGINES. *TC
30722004-10-13. Service bulletin. THE ENGINE COOLANT TEMPERATURE OR INTAKE AIR TEMPERATURE SENSOR MAY READ -40 DEGREES WHEN MONITORED WITH TECH 2. *TT
100120032004-05-06. Service bulletin. BLUEHEAT COOLANT HEATER THERMO TOP C. WEBASTO. *MR
030632004-02-24. Service bulletin. 03063 - OBD SYSTEM SOFTWARE UPGRADE - ON-BOARD DIAGNOSTIC (OBD) SYSTEM SOFTWARE UPGRADE - DIAGNOSTIC TROUBLE CODE (DTC) P0128 ENGINE COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE. *TT
0306020072003-12-02. Service bulletin. LOSS OF COOLANT. *TT
013392003-11-19. Service bulletin. HVAC BLOWER MOTOR FAN STAYS ON IN THE HIGH BLOWER POSITION. SERVICE VME. *TT