Fuel Pump Relay - Code 20 Set

Bulletin No. T 87-66
File in Group 6E
Number 40
Corp. Ref. No. 416502
Date Jan. '87
SUBJECT: CODE 20 - INCORRECT FUEL PUMP RELAY

MODELS AFFECTED: 1981 DE VILLE, ELDORADO AND SEVILLE 1981-1984 LIMOUSINES

Figure 1:

Figure 2:

Two types of relays were packaged under P/N 1626239 by GMSPO. The correct relay will have the P/N 1626239 and the electrical schematic (Figure 1) molded into the relay cover. The incorrect relay will have P/N 12033768 on a paper label with P/N 1623924 and the electrical schematic (Figure 2) molded into the relay cover. Installing the incorrect relay in 1981-1984 vehicles equipped with 6.0 liter engines (V-8/6/4) as a fuel pump relay will immediately damage the ECM and set a code 20.

The relay cover MUST be inspected for the correct part number before installing it for use as a fuel pump relay in 1981-1984 vehicles equipped with 6.0 liter engines (V-8/6/4).