16TL20
Service Bulletin/Repair Instructions
16TL20 HEAVY DUTY ENGINE VALVE STEM SEAL INSTALLING DRIFT AND SLEEVE
Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
16TL20
16TL20 HEAVY DUTY ENGINE VALVE STEM SEAL INSTALLING DRIFT AND SLEEVE
1020-16
1020-16 CHASSIS FUEL SYSTEM ISOLATION TEST
1018-16
1018-16 SYMPTOM DIAGNOSTICS - NOISE
1017-16
1017-16 ENGINE MODEL AND SERIAL NUMBER DESIGNATION
09 06-16
0906-16 LOW PRESSURE FUEL PUMP
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.