Saturn SL1 Engine Control Computer

Replacement Parts

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A mid-sized car that gets small-car gas mileage is what your Saturn SL1 is known for. Its electronic control module (ECM) is the brain that makes your L's performance happen. If your check engine light is on and gas mileage is off, replace your ECM for Saturn SL1 with a new one from AutoZone.

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  •  | Page 1 of 4 |  
  • Part Number: 77-3773F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-1856F
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Powertrain Control Module. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-3810F
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Flash programming included in price. With Powertrain Control module. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-3773F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. OEM #21023773. Flash units require programming specific to the vehicle prior to shipping, accurate VIN and mileage are required, additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-5109F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. OEM #21025109, 21025127. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-4488F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. OEM #with OEM #21008930. Flash units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-4985F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. OEM #21024985. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-2374
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Powertrain Control Module. Unit may require additional programming either ON or OFF the vehicle. OE #21022374.
  • Part Number: 77-4986F
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Flash programming included in price. OEM #21024986. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-3775F
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Flash programming included in price. Powertrain control module. OEM #21023775. Flash units require programming specific to the vehicle prior to shipping, accurate VIN and mileage are required, additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-4490F
  • Warranty: 1 YR
  • Application: With automatic transmission
  • Notes: Flash programming included in price. Powertrain control module. OEM #21008931. Flash units require programming specific to the vehicle prior to shipping, accurate VIN and mileage are required, additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 77-3808F
  • Warranty: 1 YR
  • Application: With manual transmission
  • Notes: Flash programming included in price. With Powertrain Control module. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  •  | Page 1 of 4 |  

When an ECM fails, your Saturn SL1's motor can't run efficiently. Staring becomes difficult, idling becomes rough, and accelerating becomes shaky. Replacing your bad ECM with a new one from AutoZone and get back the smooth operation you enjoy while driving your Saturn. Buy your ECM online and get Free Shipping on $75 or more. Choose Same Day Store Pickup (in most cases) and get it today. Receive trustworthy advice provided by helpful staff when you pick up an ECM at AutoZone. While you're in store, ask about other items to keep your Saturn SL1 looking and running beautifully.

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