{"id":1272,"date":"2020-03-13T12:19:10","date_gmt":"2020-03-13T20:19:10","guid":{"rendered":"http:\/\/automobileman.com\/wp\/?p=1272"},"modified":"2020-03-13T12:22:56","modified_gmt":"2020-03-13T20:22:56","slug":"lokar-automatic-electronic-sport-shifters","status":"publish","type":"post","link":"http:\/\/automobileman.com\/wp\/?p=1272","title":{"rendered":"Lokar Automatic Electronic Sport Shifters"},"content":{"rendered":"\n<p>written by Larry Cleeton (larry@cleeton.com)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"998\" height=\"688\" src=\"https:\/\/automobileman.com\/wp\/wp-content\/uploads\/2020\/03\/lokar-sport-shifter.jpg\" alt=\"\" class=\"wp-image-1273\" srcset=\"http:\/\/automobileman.com\/wp\/wp-content\/uploads\/2020\/03\/lokar-sport-shifter.jpg 998w, http:\/\/automobileman.com\/wp\/wp-content\/uploads\/2020\/03\/lokar-sport-shifter-300x207.jpg 300w, http:\/\/automobileman.com\/wp\/wp-content\/uploads\/2020\/03\/lokar-sport-shifter-768x529.jpg 768w\" sizes=\"auto, (max-width: 998px) 100vw, 998px\" \/><\/figure>\n\n\n\n<p>The GM Supermatic trans controller supports manual up\/down electronically, but as usual the Chevy Performance documentation was quite sparse.&nbsp; It describes the wires, but not what to do with them.&nbsp; I knew the dual calibration selector was simply a digital in signal to the controller that you ground to select calibration B.&nbsp; I assumed the manual shift enable\/up\/down wires would be the same but wasn\u2019t sure. I finally found the answer deep in the Help part of the calibration program you can use on the controller via a USB cable. Of course the old program wouldn\u2019t run on 32 bit Windows. Fortunately Chevy Performance has a download of the latest version that supports 64 bit Windows. Then I found that the program won\u2019t start without being connected to the trans controller. After that I finally found in the program help the following:<\/p>\n\n\n\n<p><strong>2.2.5\nCal A\/B Wire<\/strong><\/p>\n\n\n\n<p>This wire is part of a 4-way connector using terminal \u201cB\u201d of\nthe connector. A neat feature of the TCU is the ability to change to a\ncompletely different calibration at the flick of a switch. This is accomplished\nby hooking this lead to a dash\/console-mounted toggle switch. Run the other\nswitch pole to a ground. The default position (off) will be the Cal A setting. When switched on (grounded), the\nTCU will change the TCU to operate from the Cal B calibration. <\/p>\n\n\n\n<p>NOTE: The TCU is already pre-programmed with an \u201cA\u201d and \u201cB\u201d\ncalibration. The only difference is higher line pressure (firmer shifts) in the\n\u201cB\u201d calibration verses the \u201cA\u201d calibration. <\/p>\n\n\n\n<p><strong>2.2.6\nManual Shift Connector<\/strong><\/p>\n\n\n\n<p>The TCU is configured such that it&#8217;s possible to have fully\nmanual upshifts and downshifts at the flick of a switch like a bump stick. This\nworks by first activating the manual mode with one switch to Terminal C. Once\nactivated, the transmission can be bumped up (Terminal B) or down (Terminal C)\nthrough the forward gears via an On-Off-On momentary rocker switch. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Terminal A (brn\/white wire) &#8211; momentary ground for bump down<\/li><li>Terminal B (brn\/lt.blue wire) &#8211; momentary ground for bump up<\/li><li>Terminal C (brn\/red wire) \u2013 Toggle switch to ground to activate manual\nmode<\/li><\/ul>\n\n\n\n<p><strong>Caution:<\/strong> Be aware that serious engine damage could occur due to over-revving if\ndownshifts are made at too high of vehicle speed. The TCU cannot override your\ninput while in the manual mode.\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>written by Larry Cleeton (larry@cleeton.com) The GM Supermatic trans controller supports manual up\/down electronically, but as usual the Chevy Performance documentation was quite sparse.&nbsp; It describes the wires, but not what to do with them.&nbsp; I knew the dual calibration&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"http:\/\/automobileman.com\/wp\/?p=1272\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1272","post","type-post","status-publish","format-standard","hentry","category-gen-v-accessories"],"_links":{"self":[{"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1272"}],"version-history":[{"count":4,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1272\/revisions"}],"predecessor-version":[{"id":1277,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1272\/revisions\/1277"}],"wp:attachment":[{"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1272"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/automobileman.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}