Voltage Regulator - Undercharging/Overcharging

Number: 87-54 REISSUE

Section: 6D

Date: APR., 1987
Subject: INOPERATIVE VOLTAGE REGULATORS


Model and Year: 1986 AND 1987 CAPRICE, CAMARO, MONTE CARLO
TO: ALL CHEVROLET DEALERS


This bulletin cancels Dealer Service Bulletin 87-54 (Section 6D) dated January 1987. Bulletin 87-54 Reissue provides part numbers for replacement generators that include the improved voltage regulator.


CONDITION: Under certain operating conditions, the voltage regulator may become inoperative causing either a no-charge or full-charge condition. A no-charge can lead to a no-start condition, while a full-charge can lead to excessive battery charging, which can damage the battery.


CORRECTION: An improved voltage regulator, P/N 1116423, has been released. Replace the original regulator with the new regulator. The new regulator can be used for any 1986 Caprice, Camaro, or Monte Carlo or 1987 Caprice or Monte Carlo, except the 120 AMP used on Chevrolet police and taxi option only.

If the entire generator must be replaced, use the Service part numbers listed.
GENERATOR AMP SERVICE
SERIES RATING PART NUMBER


12 SI 56 1101307
12 SI 66 1101307
12 SI 78 1101307
12 SI 94 1101308

15 SI 70 1101322

17 SI 97 1101306
17 SI 108 1101306


Warranty information: Use existing labor operations.