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Service bulletin TSB-74B175

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 id10029186
Published by NHTSA2009-06-24
Manufacturer's numberTSB-74B175
Manufacturer's date2009-02-10
NHTSA componentSTRUCTURE:BODY; EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

PIERCE MFG: MULTIPLE UNITS HAVE EXPERIENCED MOISTURE COLLECTING WITHIN THE ROTO MOLDED EVAPORATOR HOUSING. MODEL YEARS UNKNOWN. PROPER CYCLING OF AIR CONDITION SYSTEM. UPDATED ELECTRIC HARNESS. LOWER BATTERY BOX DUE TO POSITIVE POST. *PE

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

Body and frame, Electrical system, Equipment and accessories, Heating and air conditioning, 12-volt battery

Vehicles listed
PIERCE IMPEL2007 to 2009
PIERCE VELOCITY2007 to 2009

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