Lmm wont start

[smokinlmm]

The key on my 07.5 got left on batteries went dead new batteries in and trucks actin weird its gota 3 pattern ding all the time key in it or not turn the key on dash lights come on none of the gauges move wont turn over or anything guy that tunes for me said it usually does it to him when he flashes it any ideas thanks

 

[TheBac]

Moved to Electronics section. No idea on what you did except it sounds like an ECM/BCM issue. You may need a Tech2 to see if they are communicating (or even working).

 

[NC-smokinlmm]

Your the 1 that got my screen name! This is the only forum I don't have it on. Haha

Your security system is acting up. Your stereo factory or aftermarket?

 

[KyleC4]

Any dash lights staying on solid like theft deterrent?

 

[BLACKMAX1]

Are the gear selections illuminating in the cluster when the key is in the RUN position, and have you checked to see if you blew any fuses? It sounds like you don't have any communication with the ECM.

 

[smokinlmm]

No the selector doesnt show up amd fuses are all good

 

[BLACKMAX1]

If fuses are good and the bail connectors on top of the motor are good then it is most likely your BCM or ECM are bad or your ECM is not communicating.

 

[BLACKMAX1]

Have you been able to pull any codes?

 

[NC-smokinlmm]

Ground the case of your tcm to the negative post of the battery and see what happens.

 

[smokinlmm]

Nothin happened and waitin on my buddy with the laptop to get here to check for codes

 

[smokinlmm]

No codes putting a tech 2 on it tomorrow

 

[NC-smokinlmm]

Sounds like a bad tcm.

 

[Tothemax]

unplug the tcm and reconnect. seen it before. if not try ecm