I replaced the ign switch the other day, seemed to fix it for alittle atleast. I didn't get a chance to check all grounds, because it was wet outside And I wasn't gonna get all wet and cold laying on the ground lol. Maybe when I pulled the passlock sensor out to give me alittle more room inch seated it back to give the same resistance as before and it's just getting loose or something. Because shortly there after it quit working again. I will check resistance at the sensor and at the bcm and compare when I have time. Probably won't be able to even look at it till Thursday or Friday. So here for ideas in the mean time. If passlock was messed up would it allow engine start, then kill injection? Or simply not allow start in the first place? That will rule stuff out brain storming.
Also I took a bcm out of a similar truck, and no change. I have heard they need programmed... But both trucks are ext cab 2006 digital climate controls, everything is the same body wise besides steering wheel controls on one and not the other. Will that work to rule it out like I tested, or is that different enough that obviously it won't communicate properly?
Once again, if you turn the key on and you see power at the hvac and the cluster is acting like it's supposed to, you know it will start and run fine. If no power at hvac, you know it will start and die just as before. The problem that was once intermittent seems perminately messed up now lol.
Btw, even though the hvac has power at the connector does not mean it will power up properly. So that there has me thinking bcm could have been the problem which is why I swapped to begin with.
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