For 1990-2009 cars

# INTERMITTENT CODE B110 ERRATIC TEMP. READING (ECC)

#### SUBJECT: INTERMITTENT CODE B110 AND/OR ERRATIC TEMPERATURE READINGS OR ECC CONTROLS TOO HOT/COLD (REPLACE MALE TERMINALS)

#### VEHICLES AFFECTED: 1991 E, K MODELS

Some 1991 Eldorados built before VIN breakpoint 602439, Sevilles built before VIN breakpoint 80.2449, and Rivieras built before VIN breakpoint 402341 may experience one or more of the following conditions:

o Intermittent code B110 o Erratic outside temperature sensor readings o Electronic climate control too warm or too cold at times

These conditions may be caused by a bad connection at the Outside Air Temperature (OAT) sensor under hood. Some vehicles were built with male terminals on both sides of the OAT sensor (male terminals on the sensor and male terminals on the harness). To repair this condition replace the two male terminals on the harness with female terminals, P/N #12010182 (include in the terminal repair kit J-38125).

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.