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Unhook battery's
Turn on headlights for 10_15 min
Turn off headlights
Hook battery's up
Turn koeo
Did all dash gauges do a full sweep?? They suppose to
EDIT : OOPS sorry that one does not have the Uxxx codes in it.
The codes that start with a U tend to be communications codes.
Sounds like you may have a network issue with the truck.
If what Benny told you to do does not work I would pull
the dash so you have access to the the cluster and check
to see that both of the connectors at the tops are fully seated.
I am coming up with this for that code. U1262 SCP - Communication Bus Fault.
Clears all the learned parameters in the PCM (Powertrain Control Module)
aka Computer. For had a slightly different way to do the same thing but
you need to have there scan tool or or one that can reset KAM (Keep Alice Memory)
What happens is something a bug or glitch gets into the KAM and
clearing it also clears the glitch.
Well not sure this is good news. The gauges all started acting normally again. It appears I may have the worst type of of problem. Intermittent.
Keeping fingers crossed it keeps working.
Had the batteries disconnected to replace a few injectors. Running fine but the gauges are stuck again. A rap to the console may get them going again. Usually not.
But also noticed one of the power windows no longer works.
Did a bit more research, sounds like this is one of the symptoms of a gauge cluster going bad.
Does that seem reasonable or anyway to confirm it?
Had the truck for about 20k miles now. Had one bad injector #6 when we got it. Ran poorly, guy gave us a great deal. Replaced that one, ran great. Recently started showing a misfire on#2. Son replaced the rest of the injectors on that side yesterday. 240k miles original injectors.
In my research I am reading a bad gauge cluster may cause intermittent misfires. Wonder if we were premature in changing injectors?