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Tag Archives: 1990

C3-C4 Corvette EPROM & Memcal Chip Codes 1980-1995

C3-C4 Corvette EPROM Memcal Code List 1980-1995

What is an EPROM/Memcal Chip? An EPROM or erasable programmable read-only memory, is a type of programmable read-only memory (PROM) chip that retains its data when its power supply is switched off. EPROM refers to chips which are attached to the Engine Control Module (ECM) from 1982 to 1985. GM changed the name of this chip to a Memcal chip in…

C4 to C5 Corvette VATS Key Decoding Guide 1986 to 2004

C4 to C5 Corvette VATS Key Decoding Guide 1986 to 2004

This guide is designed to help you understand the VATS Key and determine which resistance value your Corvette’s Body Control Module will respond to. If at any time you have questions, please visit our Support section to open up a support ticket. VATS Explained The VATS acronym stands for Vehicle Anti-Theft System and is also…

1990 to 1996 Corvette HVAC Diagnostic Codes

C4 1990 to 1996 Corvette HVAC Diagnostic Codes Explained

1990 to 1996 Corvette models that are equipped with the C68 option code (Automatic, Electronic Air Condition) allow HVAC diagnostic codes to be read from the digital screen on the climate control panel. This feature is useful when attempting to diagnose issues with the A/C system. To learn more about entering the diagnostic mode and…

C4 Corvette RPO Codes

C4 Corvette Regular Production Option (RPO) Codes

The following is a list of Regular Production Option (RPO) Codes for C4 Chevrolet Corvettes from 1984 to 1996. A Regular Production Option (RPO) is General Motors standard coding for vehicle configuration options. These codes are a combination of 3 alphanumeric characters and refer to a specific options or modifications to a vehicle. If any C4 Corvette codes have…