ECCPP Electric Fuel Pump Module Assembly Replacement for E3637S 1985-1991 for Chevrolet S10 2.5L,1988-1991 for Chevrolet S10 4.3L,1985-1990 for GMC S15 2.5L

1986-1991 for Chevrolet S10 2.8L
1988-1991 for Chevrolet S10 4.3L
1985-1990 for GMC S15 2.5L
1986-1990 for GMC S15 2.8L
1988-1990 for GMC S15 4.3L
1991 for GMC Sonoma 2.5L
1991 for GMC Sonoma 2.8L
1991 for GMC Sonoma 4.3L

When does the fuel pump need to be replaced?
1.Engine hard to coldstart------The failure of safe valve cause the fuel system pressure decreased
Vehicle makes high pitched sound when the engine is first engaged

2.Sudden trouble accelerating
Acceleration and power are both getting down-------The entry of filth into the pump leads to the over-worn of the pump body and the impeller, causing the decrease of the pump's pumping function

3.Low fuel pressure
Difficulty starting the car------A weakened fuel pump can cause the vehicle to take more cranks to start than normal, and in more serious cases may even cause the vehicle to require multiple turns of the key before it will start.

4.The car can't put on the gas, serious direct put out
Oil level display incorrect------Floating arm was distorted, failed or damaged during transportation or installing

Recommended owner:
1. Keep the habit of refueling the car in time, it is unwise to refuel when the oil lamp is bright
2. Choose high quality car gasoline
3. Timely cleaning or replacement of gasoline strainer