Replaced my def pump connector on pump itself had burnt marks harness did not. Same code and limited speed to 65 dealer said they'd warranty pump/heater but suggest I replace harness anyone else have this issue? Tia
Def pump replaced same issue
- Thread starter mtxcaleb
- Start date
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- Tags
- def problems l5p
A proper diagnosis would have saved some hassle here. Im guessing you didn't check the integrity of the rest of the circuit while you had it apart?
I back probed everything but that didn't matter because the pin clamp strength was weak tested the heater circuit on the pump assembly before replacing it and the circuit was open. Replaced harness and everything's normal. More of a question regarding the integrity of GM's electrical lately more so than second quessing my work.