3 codes Related?

[eb3kgt]

2014 Sierra 5.3L-Remote start wasn't working, started truck and threw codes P129D, P2534, and P0700. Any ideas if these 3 are related in some way for an easy fix?

[GrumpyAeroGuy]

Not sure if this applies to any of these codes....

I had remote start fail due to a faulty throttle position sensor...(?)

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[eb3kgt]

Must also add, it went through a touch less wash the night before and did the undercarriage as well

[durandetto]

The codes aren't directly related, but they could be caused by a wiring issue. P0700 is trans related and could be a module or module wiring issue. P2534 is fuel pump module related and could be the module or module wiring. P129D is BCM related and there's a TSB for it #PIT5308C. There's a couple areas where there is can be wiring issues. Any codes stored will cause your remote start to not function properly.

 

I would check the related harness connectors for corrosion or moisture intrusion. Put some dielectric grease on them and reassemble. Have the codes cleared and see what happens.

 

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[davester]

p0700 is just a generic "The tcm has noticed a problem" code.  You need a code reader that can get codes from the tcm, to find out what the specific problem/s are.