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Service bulletin 020508

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 id636424
Published by NHTSA2002-11-08
Manufacturer's number020508
Manufacturer's date2002-03-01
NHTSA componentPOWER TRAIN

NHTSA's summary

INOPERATIVE OR INACCURATE SPEEDOMETER, 4X4 LAMP ILLUMINATED, AND / OR DIAGNOSTIC TROUBLE CODE P1635 OR P1639 PRESENT AFTER POWERTRAIN CONTROL MODULE (PCM) OR INSTRUMENT CLUSTER REPLACEMENT. 1999-2002 VARIOUS FORD VEHICLES. *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

Transmission and driveline

Trouble codes named

P1635, P1639

Vehicles listed
FORD FORD

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