Trying to trouble shoot a 2007 dodge ram 2500 4x4 hemi. Truck runs and drives, but instrument cluster- nothing works- no lights come on, power locks, interior lights, turn signals, 4 ways, wipers, visor lights, high beams I think that's all that doesn't work. Radio works and stays on after truck is turned off and door is opened for 10mins+. He checked all fuses, cleaned all terminals, tired instrument panel reset. From what im trying to read, either TIMP or instrument cluster ? Any good way to test ? verify ? went to autozone and lady said shows U1403 code- which is a fuel pump but runs good. Trying to help my son trouble shoot truck Thanks for any help Phil

Replace the TIPM. No need to have it programmed. Do the reset with the key. Airbag fuse will probably need to be pushed down if you have an airbag light.

The Fuel pump code/ circuit is one the biggest problems with the TIPM.

Son sent out TIPM and had serviced. Told him the TIPM is good. they told him they think its the cluster , cause some of the circuits he say doesn't work goes thru the cluster . Thoughts ?? plus they think connectors could be bad coming out of the TIPM

I have run across the dash pod not being seated solidly in the plug in. You might have to pull the cluster out a little and reseat it.

it was the instrument cluster. Replaced and has all electrical back FYI