A1 CARDONE 77-7747 engine control module (ecm) for the 1988-1991 Chevrolet C1500 V6 4.3L or V8 5.0L, the 1988-1993 C1500 V8 5.7L, the 1990 C1500 V8 7.4L and other vehicles is a remanufactured computer that controls the engine. An ECM handles the engine only, while a PCM also controls the transmission.
- Reverse engineering of the failed original shows how and why it failed, so design weaknesses can be corrected
- Critical components are re-soldered or replaced to help prevent intermittent failures
- Every module is 100% computer tested, using automated equipment or bench testing depending on application
- On-car vehicle validation tests durability and performance
- Remanufacturing reduces the energy and raw material needed to make a new part by 80%
Quick facts
- Part: A1 CARDONE 77-7747 engine control module (ecm)
- Fits: 1988-1991 Chevrolet C1500 V6 4.3L or V8 5.0L, the 1988-1993 C1500 V8 5.7L, the 1990 C1500 V8 7.4L and other vehicles
- Condition: Remanufactured
A check engine light that stays on after a reset, an engine that shuts off for no reason, loss of spark or intermittent starting can point to a failing module. Poor grounds can produce these symptoms too, so the signs alone do not prove the module is the problem. If the module is the cause, this module replaces it.
Fits
This module also fits the 1988-1991 Chevrolet K1500 V6 4.3L or V8 5.0L and the 1988-1993 K1500 V8 5.7L, as well as the 1992-1993 GMC Yukon V8 5.7L, and each of them takes one. If your vehicle is not named here, enter its year and engine in the "Vehicles it fits" section to see whether it is covered.
Specifications
Fit and size
- Quantity per vehicle: 1
- Connectors: 2, rectangular, female
- Terminals: 56, male pin
- Length: 8.7 in
- Width: 6 in
- Height: 1.6 in
Build and materials
- Condition: Remanufactured
- Grade: Standard Replacement
- Flashable: No
- Removable PROM: No
- Contains electronic components: circuit board
- Country of origin: Mexico
In the box
One engine control module and one instruction sheet. Mounting hardware is not included, so plan on new fasteners rather than reusing the old ones.
Installation notes
- Some GM applications have a knock module that must be transferred to the replacement module.
- Most GM vehicles have a VATS, Pass Key or Pass Lock anti-theft system, and resetting it does not necessarily need a scanner.
- A 30-minute manual procedure works without a scanner; the vehicle maker's approved service manual gives the details.
Interchange: 1227747 · 88999146
Frequently Asked Questions
Does the A1 CARDONE 77-7747 fit the 1990 Chevrolet C1500 V8 7.4L?
Yes, A1 CARDONE 77-7747 is listed for the 1990 Chevrolet C1500 V8 7.4L, and that truck takes one module. For other years or engines, use the "Vehicles it fits" section.
What comes with the A1 CARDONE ecm?
The A1 CARDONE 77-7747 comes as one module with an instruction sheet. Mounting hardware is not included.
Is this engine control module flashable or does it have a removable PROM?
No to both. This module is listed as not flashable and without a removable PROM.
Do I have to move a part from my old module to this one?
On some GM applications, a knock module on the original must be transferred to the replacement module.
Do I need a scanner to reset the anti-theft system on a GM truck?
No, not necessarily. A 30-minute manual procedure can reset it without a scanner, as laid out in the vehicle maker's approved service manual.
