Voltage Regulator - Failures
Bulletin 87-6D-6ADate Apr. '87
Ref. No. 87-061A-6D
Corp. Ref. No. 736401R
SUBJECT: VOLTAGE REGULATOR FAILURES
MODELS AFFECTED: 1986-87 LESABRE AND ELECTRA WAGONS 1986-87 REGALS
NOTICE: This bulletin adds generator part numbers and replaces Dealer Service Bulletin 87-6D-6, which should be discarded.
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, Part Number 1116423, has been released. Replace the original regulator with the new regulator which can be used on any of the affected models.
If the entire generator must be replaced, use the table below for correct part numbers.
Engine Rating Series Original P/N Service P/N
LV2 78 12SI 1105565 1101324
78 12SI 1105567 1101324
94 12SI 1105493 1101324
LD5 56 12SI 1100239 1101307
78 12SI 1100200 1101307
94 12SI 1105444 1101308
70 15SI 1105197 1101322
85 15SI 1105548 1101323
Warranty Information
Use existing labor operations.