Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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was the horn beeping when the dash lights where flashing ?
is there a small red LED bulb in the dash ?
this has a remote starter in it after market does it also have an after market alarm added to it ?
how long have you owned this truck ?
usually the only thing that will blink just the dash lights is some kind of after market alarm or remote starter
can you get under the drivers side of the dash and completely remove any after market wiring tapped into the stock wiring and repair all cut wires and any wire tapped into back to 100 % stock and see if the dash lights will still do this ?
this can be caused by the remote starter as the remote starter is wired into the lighting system to blink the lights and the starting signal part of the system
any time with you have odd issues like this the first thing you have to do is remove all the after market wired in devices as any tests we do can give us false readings with anything after market wired into this truck
if when all that is removed and it still does this then we could have a bad ignition switch causing this issue to possibly the ignition switch wire signal to the starter relay being an issue
but right now with a remote starter wired into this truck that has to be wired into the starting circuit usually under the drivers side steering column into the starter wires off the ignition switch
it may correct the cluster issues but as for the knock sensors more than likely not but i would address this electrical problem first and once that is fixed clear the codes and see if they reset if they do let me know the code numbers
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