Instruments - Clock Gains or Loses Time or Resets
89Oldsmobile10SUBJECT: CLOCK GAINS OR LOSSES TIME OR RESETS DATE AND TIME INTERMITTENTLY (INSTALL NEW BCM PROM)
MODELS/YEARS: 1989 TORONADO
NUMBER: 89-T-68A
CORP. REF. NO: 718101
DATE: August 1989
SECTION: 8C, 8D
This bulletin cancels and supersedes Dealer Technical Bulletin 89-T-68, date 4/89, which may be discarded. Additional symptom description has been added.
Clocks on some 1989 Toronados with Visual Information Center (VIC) may gain or lose time or experience reset of date and time intermittently. The amount of time may vary from a few minutes to several hours.
IMPORTANT: A normally operating clock may lose or gain up to two minutes per month.
To repair this condition check the PROM I.D. and install the appropriate new PROM using the following procedure:
1. Determine the amount of time gained or lost. If it is less than two minutes over a one-month period, the clock is operating properly.
2. Determine whether the trip odometer or climate control setting is affected, or if a BCM code B552 is set. If so, refer to the Service Information Manual for BCM power and ground diagnosis.
3. Check PROM I.D. (BD99). Refer to Section 8D of the Service Information Manual.
4. If the PROM I.D. is: 3423,3763,or 0583
Replace the EPROM with: P/N 16138867
5. If the PROM I.D. is not: 3423, 3763, or 0583
Refer to the Service Information Manual for BCM power and ground diagnosis.
All parts are currently available from GMSPO.