To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Chevrolet has TTY equipment available at its Customer Assistance Center. Any TTY user in the U.S. can communicate with Chevrolet by dialing: 1-800-833-2438. TTY users in Canada can dial 1-800-263-3830.
Customer Assistance
OfficesK20 Engine Control Module: Programming and Setup Engine Control Engine Control Module
Special ToolsEL-49642 SPS Programming Support ToolFor equivalent regional tools, refer toSpecial Tools.Note:DO NOT program a control module unless directed to by a service procedure or a servicebulletin. If the control module is not properly configured with the correct calibrationsoftware, the contr ...