# Service bulletins for the 2004 Kenworth T800

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.

16 bulletins from NHTSA, as of 2026-10-19.

- [42\-070](/bulletins/11038569.md), 2026-10-17, Service bulletin: UNKNOWN OR OTHER. Due to supplier constraints, an authorized aftermarket surge tank has been made available.
- [P001](/bulletins/11037541.md), 2026-09-29, Service bulletin: ENGINE. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
- [02\-160](/bulletins/10188550.md), 2021-03-10, Service bulletin: VISIBILITY; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY:WINDSHIELD WIPER/WASHER. Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
- [32\-015](/bulletins/10177021.md), 2020-07-03, Service bulletin: ELECTRICAL SYSTEM. Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
- [34\-085](/bulletins/10173212.md), 2020-04-03, Service bulletin: VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
- [32\-016](/bulletins/10173205.md), 2020-04-03, Service bulletin: EQUIPMENT. Information Only: Proper jump\-starting voltage will eliminate high voltage related issues and equipment damage.
- [DOR\-W5T2V\-01](/bulletins/10170199.md), 2020-01-13, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT ADAPTIVE/MOBILITY. This SKU is a Climate Control Module. The customer communication requested return of unsold inventory to inspect alignment pins and knobs. The alignment pins may be weak which cause them to break and knob material may be weak which could cause them to break. Breaking of the alignment pins or knob could prevent adjustment of the climate control system.
- [01\-075](/bulletins/10168703.md), 2019-12-04, Service bulletin: ENGINE AND ENGINE COOLING. Information Only: This bulletin provides guidance for repairing an air\-conditioning system after internal failure of the A/C compressor.
- [TIB\-13\-040](/bulletins/10056911.md), 2015-03-11, Service bulletin: SUSPENSION:MULTIPLE AXLE. KENWORTH: SOME TRUCKS FAILED TO MEET COMPANY STANDARDS FOR AIR VOLUME LIFT AXLE AND THE COMPANY WILL INCREASE AIR VOLUME FOR WORTHWHILE IMPROVEMENT TO EXCEED GOVERNMENT FMVSS 121. MODEL T800, W900. \*PE
- [TIB\-E\-055](/bulletins/10045240.md), 2012-08-22, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. KENWORTH: OIL COLLECTION AT CAC INTAKE PIPE IS CAUSED BY AN IMBALANCE IN TURBOCHARGER PRESSURES. MODELS T660, T800, T700, AND W900. \*PE
- [TIB\-E011](/bulletins/10040181.md), 2011-08-16, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. PACCAR: ENGINEERING STANDARDS HAVE CHANGED AND THERE ARE NOW ENGINES WITH HEAT TREATED BOLTS. \*RM
- [TIB\-E\-009](/bulletins/10040180.md), 2011-08-16, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. PACCAR: A SOFTWARE UPDATE IS CAUSING THE CHECK ENGINE LIGHT TO COME ON. \*RM
- [TIB\-02\-107](/bulletins/10032567.md), 2010-04-14, Service bulletin: STRUCTURE:BODY:HOOD. KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. METTON HOOD REPAIR CAMPAIGN. HOOD REINFORCEMENT CHANNEL CRACKING DUE TO UNIQUE, HARSH SERVICE CONDITIONS. NOTE: CODE 02107 IS NOT AN INSTRUCTION FOR DEALERS TO INITIATE INSPECTIONS OR UNDERTAKE REPAIRS, UNLESS THERE IS A CUSTOMER COMPLAINT. OPEN CAMPAIGN CODE 02107 IN SIR SIMPLY ESTABLISHES ELIGIBILITY FOR WARRANTY. CSC LETTER WAS REC'D. \*PE
- [TSB\-41\-13](/bulletins/10028327.md), 2009-03-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH TRUCK: AIR INTAKE FOR PRE\-2007 ISM ENGINE IN T800 SHORT HOOD CHASSIS. PREMATURE ENGINE WEAR DUE TO DIRT INGESTION INVOLVING THE 2002\-07 T800 SHORT HOOD \(SH\) MODEL WITH CUMMINS ISM ENGINE. \*PE
- [TIB\-41\-12](/bulletins/10027664.md), 2009-01-29, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. KENWORTH TRUCKS: THE INLET PIPE CONNECTIONS FOR ISX ENGINES. THE KENWORTH AIR INLET PIPE TO THE ISX TURBO MAY BECOME DETACHED. CHASSIS AFFECTED T2000, T800, AND W900. MODEL YEARS UNKNOWN. \*PE
- [TIB\-44\-17](/bulletins/10027646.md), 2009-01-28, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. KENWORTH TRUCKS: REDUCED ENGINE POWER FROM FUEL STARVATION. ANY MODEL KENWORTH EQUIPPED WITH THE 2007 EMISSIONS COMPLIANT ISX ENGINE AND OPTIONAL DAVCO 382 FUEL FILTER, BUILT PRIOR TO 8/11/08, \*PE

JSON: [/v1/vehicles/2004_kenworth_t800/bulletins](/v1/vehicles/2004_kenworth_t800/bulletins)

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