ERROR CODES: p0740 and p1860. after a small investigation I found one site that said if there is more than one code that it’s probably NOT the transmission…but the ignition switch. We tested the ignition switch and it’s getting fire (which was one of the requirements)..does this mean that my problem IS the transmission (p0740:TCC solenoid and p1860:TCM PMW solenoid)? if so, for the TCC solenoid it shows 4 different ones at the autoparts store…which one to use and where do they go on the transmission? What it’s doing….not shifting right..although its automatic..it sounds like I’m winding out the gears a bit. Also,when I start it, it will make a small noise, wait a second,make another small noice and turnover. My fuel mileage is bad. it USE to get pretty good fuel mileage for an 8 cylinder. Please help.<\/p>\n","protected":false},"excerpt":{"rendered":"
ERROR CODES: p0740 and p1860. after a small investigation I found one site that said if there is more than one code that it’s probably NOT the transmission…but the ignition switch. We tested the ignition switch and it’s getting fire (which was one of the requirements)..does this mean that my problem IS the transmission (p0740:TCC… Read More »1998 chevrolet silverado,K1500,4×4, 5.7L v 8<\/span><\/a><\/p>\n","protected":false},"author":8555,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,3],"tags":[9042,393],"class_list":["post-17178","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","category-chevy","tag-error-codes-p0740-and-p1860","tag-silverado"],"_links":{"self":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/17178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/users\/8555"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/comments?post=17178"}],"version-history":[{"count":0,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/17178\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/media?parent=17178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/categories?post=17178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/tags?post=17178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}