IF YOU HAVE QUESTIONS OR ISSUES WITH ANYTHING RELATED TO OBD-1 AND OBD-2, SECURITY, AUDIO AND VIDEO SYSTEMS, PLACE THEM HERE. USE THIS FORUM FOR SES LIGHTS, RPO CODES, FACTORY OPTIONS ETC. Subforums:TECHNICAL,ELECTRICAL,AUDIO / VIDEO,SECURITY ...
Additional RPO codes are LQM (175HP) and LQN (190HP). Changes were made by GM to the 6.5 in their light trucks for emissions or reliability improvement. The 1992-1993 model years used a 6.5-specific Stanadyne DB-2 mechanical injection pump. GM replaced the DB-2 with the electronic ...
incorporated into your truck can help to ensure a better level of service if you have an in-warranty truck or can save you a lot of money if your truck is now out of warranty. Want to know what the codes are, what they mean, how to retrieve them and know how to repair the ...