{"id":13185,"date":"2020-05-29T13:00:23","date_gmt":"2020-05-29T17:00:23","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=13185"},"modified":"2020-05-29T15:57:54","modified_gmt":"2020-05-29T19:57:54","slug":"fuel-injector-replacement-guidelines","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=13185","title":{"rendered":"Fuel Injector Replacement Guidelines"},"content":{"rendered":"

If an incorrect fuel injector is installed on 2014-2020 GM models equipped with a V6 or V8 gasoline engine (RPO LV1, LV3, L82, L83, L84, L8B, LT1, L86, L87, LT2, LT4, LT5, L8T, LTA), it can lead to skewed Long Term Fuel Trims (LTFT) and\/or Short Term Fuel Trims (STFT) during engine operation. Vehicles with an illuminated Check Engine MIL or a possible rough idle after a fuel injector replacement should be checked to ensure that the correct injector was installed in the suspect cylinder. <\/span><\/p>\n

Any of the following misfire or fuel trim related DTCs also may be set: P0300 \u2013 P0308, P050D, P0171, P0172, P0174, P0175, P2099, P219A, P219B.<\/span><\/p>\n

Replacing an Injector<\/b><\/span><\/p>\n

If a fuel injector replacement is required during repairs, refer to the Electronic Parts Catalog to verify that the correct injector is ordered and installed. <\/span><\/p>\n

Here\u2019s how to identify and order the correct injector. In this example, the vehicle is a 2016 Silverado 1500 4WD Crew Cab equipped with the 5.3L V8 engine (RPO L83), VIN# 3GCUKSECXGG251110.<\/span><\/span><\/p>\n

1. Identify the 8-digit injector part number found on the injector body. (Fig. 25)<\/span><\/p>\n

\"\"Fig. 25<\/b><\/span><\/p>\n

2. Enter the VIN in the parts catalog; go to the fuel injector rail parts section.<\/span><\/p>\n

3. After the injector part number has been identified in the Description column, the part number that needs to be ordered will be in the Part # column. (Fig. 26)<\/span><\/p>\n

\"\"Fig. 26<\/b><\/span><\/p>\n

For the Silverado with the 5.3L V8 engine in this example, the original fuel injector part number is 12668390, highlighted in the Description column. The part number to order is 12698484.<\/span><\/p>\n

 <\/p>\n

Nominal Flow Injectors<\/b><\/span><\/p>\n

When fuel rails are assembled at the supplier, each injector installed in the fuel rail can be a nominal, low or high flow injector. The different injectors in the rail is done to get an even balance or flow across the fuel rail for emission requirements. Replacement injector kits will be a different part number than the injectors, and a kit may contain one of several different injector part numbers.<\/span><\/p>\n

If an injector has been removed and discarded or if all injectors are on the bench and it can\u2019t be determined which one goes where, the best thing to do is order the \u201cNOM FLOW\u201d injector part number in the quantity needed. (Fig. 27)<\/span><\/p>\n

\"\"Fig. 27<\/b><\/span><\/p>\n

For additional information, refer to Bulletin #20-NA-098.<\/span><\/p>\n

– Thanks to Bryan Salisbury<\/i><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

If an incorrect fuel injector is installed on 2014-2020 GM models equipped with a V6 or V8 gasoline engine (RPO LV1, LV3, L82, L83, L84, L8B, LT1, L86, L87, LT2, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13185","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13185"}],"version-history":[{"count":5,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13185\/revisions"}],"predecessor-version":[{"id":13232,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13185\/revisions\/13232"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}