NHTSA service bulletin

NHTSA Service Bulletin 45906: 1994 International Harvester 2000

Official manufacturer communication context for 1994 International Harvester 2000, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 45906 summary graphic for 1994 International Harvester 2000
45906NHTSA document ID
Manufacturer communicationcommunication type
3affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

THERE HAVE BEEN REPORTS OF 2000, 4000, AND 8000 SERIES VEHICLES THAT WERE BUILT SINCE DECEMBER 5, 1994 THAT DURING AMBIENT TEMPERATURES OF 70 TO 80 DEGREES FAHRENHEIT THAT THE AIR CONDITIONING IS SHUTTING OFF. ONCE THE IGNITION SWITCH, OR THE AC CONTROL SWITCH IS CYCLED THE AC SYSTEM WILL AGAIN FUNCTION. IF YOU HAVE ANY OF THE ABOVE VEHICLES EXHIBITING THIS PROBLEM YOU SHOULD CALL YOUR TSM FSM OR TECH CENTRAL AND ASK THEM TO FAX YOU INSTRUCTIONS ON HOW TO DISABLE THE LATCHING RELAY. *SD

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
International Harvester20001994Ask for service records and run the exact VIN before purchase.
International Harvester40001994Ask for service records and run the exact VIN before purchase.
International Harvester80001994Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 45906?

THERE HAVE BEEN REPORTS OF 2000, 4000, AND 8000 SERIES VEHICLES THAT WERE BUILT SINCE DECEMBER 5, 1994 THAT DURING AMBIENT TEMPERATURES OF 70 TO 80 DEGREES FAHRENHEIT THAT THE AIR CONDITIONING IS SHUTTING OFF. ONCE THE IGNITION SWITCH, OR THE AC CONTROL SWITCH IS CYCLED THE AC SYSTEM WILL AGAIN FUNCTION. IF YOU HAVE ANY OF THE ABOVE VEHICLES EXHIBITING THIS PROBLEM YOU SHOULD CALL YOUR TSM FSM OR TECH CENTRAL AND.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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