What light's up for 2-3 seconds then goes blank ? Instrument cluster ? 6X6 you mean a 4 wheel drive . This problem if instrument cluster , the instrument cluster is bad or SMJ - smart junction box First off a scan tool that will communicate with all the modules on the vehicle needs to be hooked up ! Instrument cluster has microprocessor inside an is on the vehicle communication data bus. If the instrument cluster is bad , needs replacing an programming . Dealer only .
NOTE: If installing a new instrument cluster, it is necessary to upload the instrument cluster configuration information to the diagnostic tool. For additional information, refer to Section 418-01 .
Principles of Operation
Some modules must be programmed as part of the repair procedure. If this procedure is not followed, the module does not function correctly and may set a number of diagnostic trouble codes (DTCs), including B2477 or P1639, which indicate that necessary data has not been programmed into the module.
Modules that need programming should not be exchanged between vehicles. In most cases the parameter values or settings are unique to that vehicle, and if not set correctly, cause concerns or faults.
The diagnostic tool automatically attempts to retrieve the module configuration information from all modules and from a backup location in the powertrain control module (PCM) when vehicle ID is carried out. If the module and the PCM do not contain correct information, the diagnostic tool either requests As-Built data or displays a list of items that are needed to manually configure. The diagnostic tool programs the module based on the data entered.
Your best bet is take your vehicle to the dealer or some other qualified repair shop .
Do you know what C.A.N is ? controller area network .
Your
How to Diagnose Controller Area Network CAN
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