1K4661
Service Bulletin/Repair Instructions
FIELD CAMPAIGN KIT #: IK004661- CAT Engine Serial Number Inspection
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.
1K4661
FIELD CAMPAIGN KIT #: IK004661- CAT Engine Serial Number Inspection
SVC2026-034
FIELD CAMPAIGN SERVICE BULLETIN SVC2026-034 PRODUCT COMPLIANCE-FIRST NOTICE Engine and Exhaust Components Serial Data Collection
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.