Somerset Regal L4-151 2.5L (1985)
Odometer: Technical Service Bulletins
Instruments - NVM Odometer Chip Exchange Procedure
Bulletin:
85-8-18
Date:
Sept 1985
Ref. No..: 85-279-8
SUBJECT:
NON-VOLATILE MEMORY ODOMETER CHIP EXCHANGE PROCEDURE
MODELS AFFECTED: 1985 SOMERSET
A replacement NVM chip can be obtained through the AC-Delco Service Centers authorized for digital instrument cluster repair, when diagnosis
indicates that the total odometer display of "error" is due to the NVM chip.
Replacement chips may be requested with either zero miles or with recent available known mileage. A chip with zero mileage should be requested when
recent available known mileage is not available. Dealer must install an odometer replacement sticker on the driver door with approximate mileage when
installing a chip with zero miles (unless on a new car).
When recent mileage is known, a chip may be requested with latest available mileage. Replacement sticker is not required if replaced chip has miles on
it.
After either types of replacement, the replaced chip is to be returned to the AC-Delco Service Center. NVM chips carry a core charge of $200. Zones
will be notified of any chips not returned within 60 days. All replaced chips are returned to AC Division for evaluation and reading.
