HomeCardone 77-6866 Engine Control Module
Part #: 77-6866

Cardone 77-6866 Engine Control Module

Engine Control Module
7 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$165.50Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
Out of Stock
OE Direct Replacement — Bolt-on fit, no modifications needed
Engine Control Module
Fitment: Buick and Oldsmobile, Electra, LeSabre, Riviera, Custom Cruiser, Cutlass Salon, Cutlass Supreme, Delta 88, and Toronado
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Control Module for Buick and Oldsmobile Vehicles

The Cardone Engine Control Module (ECM) part number 77-6866 is designed to meet the specific needs of select Buick and Oldsmobile models. This ECM ensures proper engine management and performance for vehicles like the Buick LeSabre and Oldsmobile Cutlass Supreme.

  • Compatible with Buick and Oldsmobile models including Custom Cruiser, Cutlass Salon, Cutlass Supreme, Delta 88, LeSabre, Riviera, and Toronado
  • Part number 77-6866 for precise fit and function
  • Part of Cardone's Engine Control Module product line, engineered for reliable engine management
  • Supports essential vehicle functions such as fuel injection, ignition timing, and emissions control
  • Includes important FAQs addressing VIN programming and passive anti-theft system requirements

About the Cardone Engine Control Module Product Line

The Cardone Engine Control Module product line focuses on delivering replacement ECMs that maintain factory specifications and vehicle compatibility. This product line is developed to provide dependable engine control solutions for a range of makes and models, including the Buick and Oldsmobile vehicles compatible with part number 77-6866. Each ECM is designed to integrate seamlessly with the vehicle’s existing systems, ensuring proper engine performance and emissions compliance.

Detailed Product Description

The Cardone ECM 77-6866 is a critical component for engine management in select Buick and Oldsmobile vehicles. It controls various engine functions such as fuel delivery, ignition timing, and emission systems to optimize performance and efficiency. This module is specifically calibrated for models like the Oldsmobile Delta 88 and Buick Riviera, ensuring accurate communication with the vehicle’s sensors and actuators. The included FAQs highlight important considerations such as VIN programming for Chrysler PCM’s with a "v" suffix and passive anti-theft system (P.A.T.S.) requirements for Ford vehicles, which can be relevant for cross-reference during installation and troubleshooting.

Common Issues Addressed by This ECM

  • Engine misfires or rough idling due to faulty control module
  • Check engine light triggered by ECM-related faults
  • Poor fuel economy caused by incorrect fuel injection timing
  • Failure to start or intermittent stalling linked to ECM malfunction
  • Emission test failures related to engine control errors

Installation Notes and Tips

  • Verify vehicle compatibility with Buick and Oldsmobile models listed before installation
  • Ensure VIN programming is completed if required, especially for Chrysler PCM’s with a "v" suffix
  • Check for passive anti-theft system (P.A.T.S.) reset requirements on applicable vehicles
  • Use a compatible diagnostic scanner to clear codes and confirm proper ECM function after installation
  • Consult vehicle-specific service manuals for detailed installation procedures

Quality Assurance and Warranty

Cardone Engine Control Modules undergo rigorous testing to meet OEM standards for durability and performance. Part number 77-6866 is backed by Cardone’s quality assurance processes to ensure reliable operation in compatible Buick and Oldsmobile vehicles. Warranty details are provided by Cardone and should be reviewed at the time of purchase to understand coverage specifics.

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1985BuickLeSabre5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985BuickRiviera5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985OldsmobileCustom Cruiser5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985OldsmobileCutlass Salon5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985OldsmobileCutlass Supreme5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985OldsmobileDelta 885.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module
1985OldsmobileToronado5.0LV8N/Awith OE # 1226866; The PROM(s)/CALPACK must be transferred from the original module to the replacement module; Additional relearns (theft, crankshaft, idle, etc) may be required; Engine Control Module

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1226866

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.