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While changing the PROM in my 1982 Corvette my cat brushed

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against my leg. I dropped...
while changing the PROM in my 1982 Corvette my cat brushed against my leg. I dropped it. not 100 % sure wich way it goes in. letters up or down. The ECM is still in the car.
Submitted: 1 year ago.Category: Chevy
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5/15/2016
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 6,693
Experience: ASE master tech for 40 years
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good morning my name is ***** ***** I will assist the prom will only go in 1 way. there are key slots that must line up for it to install. can you post a picture?? Roy
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Customer reply replied 1 year ago
This Prom will go in either way
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
it should not. do you have a cal pack in the ecm as well???
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Customer reply replied 1 year ago
What is a cal pack ?
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
another chip inside the ecm. some have more than one. do you have the cross fire system??
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Customer reply replied 1 year ago
This prom has 12 pins on each side and is rectangle shape and will go in either way
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
I know that. done tons of them can you post a picture as I requested??
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Customer reply replied 1 year ago
almost there
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
yep
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Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
usually there are 2 push down clips on the ends of the prom to keep it tight looking for some info
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Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
found this for you as well. are there any other covers on the ecm.as far as installing what you have, I always used the rule part numbers up and toward the connectors Roy 1982 Chevrolet Corvette V8-350 5.7LVehicle » Powertrain Management » PROM - Programmable Read Only Memory » Description and Operation » CALPAKCALPAKCAUTION: If the computer is found to be defective and needs replacement, remove the old CALPAK and PROM, then place both into the replacement computer. When replacing the COMPUTER always transfer the BROADCAST CODE and PRODUCTION ECM/PCM NUMBER to the service label on the replacement computer. DESCRIPTION: The resistor network calibration called a CALPAK is located inside the computer. Its appearance and service is similar to the PROM. The CALPAK allows fuel to be delivered if other parts of the computer fail. The CALPAK provides the computer with calibrations for: Cold Start Cranking.Limp home fuel (fuel backup mode).© 2016 ALLDATA LLC. All rights reserved. Terms and Conditions
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Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
please dont forget to rate me as it is the only way I get paid for my efforts Roy
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Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
the first image is the way it goes in and then the prom will only go in 1 way Roy
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Customer reply replied 1 year ago
I know wich way the carrier goes in the ECM need to know wich way the PROM goec in the carrier. it will go in either way
Chevy Mechanic: Roy, import/domestic specialest replied 1 year ago
in the picture you sent, it is backwards Roy
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Roy
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