Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1993 Cadillac Eldorado V8-300 4.9LFACTORY OEM SERVICE PROCEDURE
Vehicles Involved
Certain 1991-1995 module Cadillac vehicles equipped with 4.9 liter engines (RPO L26) require inspection and/or replacement of the PCM Mem-Cal/Prom as indicated below. Note that vehicles equipped with 4.9 liter engines can be easily identified by the character "B" in the 8th position of the Vehicle Identification Number.
Inspect To Determine If PCM Mem-Cal/prom Replacement Is Necessary
Certain 1991 model C, E, and K vehicles that received a service prom through a previous warranty repair.
Certain 1992 model vehicles that received a service prom through a previous warranty repair and built prior to the following breakpoints:
C - 247931 E - 604014 K - 806500
Replace PCM Mem-Cal/Prom - Inspection Not Necessary
All 1992 model vehicle built after the following breakpoints:
C - 247903 E - 604013 K - 806499
All 1993 model vehicles except Allante, Eldorado Touring Coupe, Eldorado Sport Coupe, Seville Touring Sedan and Fleetwood Sedan.
All 1994-1995 model DeVilles except those registered in the State of California. Note that DeVille Concours is not included.
Notice:
Since some vehicles did not receive a service prom through a previous warranty repair or are otherwise excluded from this recall, it is very important that dealers confirm vehicle eligibility through the Vehicle Information Service System (VISS) prior to performing this campaign.
Involved vehicle have been identified by Vehicle Identification Number Computer Listings containing the complete Vehicle Identification Number, customer name and address data have been prepared, and are being furnished to involved dealers with the campaign bulletin. The customer name and address data furnished will enable dealers to follow-up with customers involved in this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.
These dealer listings may contain customer names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign.
Inspect To Determine If PCM Mem-Cal/prom Replacement Is Necessary
Certain 1991 model C, E, and K vehicles that received a service prom through a previous warranty repair.
Certain 1992 model vehicles that received a service prom through a previous warranty repair and built prior to the following breakpoints:
C - 247931 E - 604014 K - 806500
Replace PCM Mem-Cal/Prom - Inspection Not Necessary
All 1992 model vehicle built after the following breakpoints:
C - 247903 E - 604013 K - 806499
All 1993 model vehicles except Allante, Eldorado Touring Coupe, Eldorado Sport Coupe, Seville Touring Sedan and Fleetwood Sedan.
All 1994-1995 model DeVilles except those registered in the State of California. Note that DeVille Concours is not included.
Notice:
Since some vehicles did not receive a service prom through a previous warranty repair or are otherwise excluded from this recall, it is very important that dealers confirm vehicle eligibility through the Vehicle Information Service System (VISS) prior to performing this campaign.
Involved vehicle have been identified by Vehicle Identification Number Computer Listings containing the complete Vehicle Identification Number, customer name and address data have been prepared, and are being furnished to involved dealers with the campaign bulletin. The customer name and address data furnished will enable dealers to follow-up with customers involved in this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.
These dealer listings may contain customer names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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