1988 Delta 88 Built After VIN Breakpoints

FIGURE 2:

1988 Delta 88 Built After VIN Breakpoints Part Number

Fuel Sending Unit Kit 25093316
Fuel Pump Kit 25116296
Pulsator 25094266
Identification Label Codes if a Turbine
Pump Has Been Installed (see Figure 2) CPD, CPE or CPP

Parts are currently available from GMSPO.

FIGURE 3:

NOTE: Turbine fuel pumps do not mount to roller vane (non-turbine) pump senders (see Figure 3). When making repairs or ordering parts, it can be determined if a turbine design pump is in the vehicle prior to removing it from the fuel tank by inspection of the identification label. Compare the identification label codes listed in this bulletin with those on the sender harness of the vehicle. Any identification code other than those listed would indicate a roller vane design pump is in the vehicle.

Example: If a turbine design fuel pump assembly is in a 1985 Ninety-Eight, the identification label would be CET.

FIGURE 4:

When installing a turbine pump in 1985 through 1988 Ninety-Eight and Delta 88 models, make certain the fuel pick-up screen is parallel with the edge of the float, and the pump to sender retaining clamp is positioned close to the float arm, yet not interfering with the float arms movement (see Figure 4).

FIGURE 5:

When replacing fuel pump/sender assembly components on a 1988 Delta 88 built after the prior VIN breakpoints, place the fuel pick-up screen at a one o'clock position when compared to the fuel level float, and position the pulsator so its metal cover faces directly opposite the pick-up screen (see Figure 5).

FIGURE 6:

WARRANTY INFORMATION

Use applicable Labor Operation Number and Labor Time.

To install either design turbine pump assembly in the fuel tank, bend the fuel pick-up screen upward while rotating and maneuvering the pump/sender assembly into the tank. (Figure 6).