GM Repair Problems? Ask GM Repair Expert Now.
Hello and welcome!My name isCustomerand I can assist you with your question.
Can you send me your VIN so I can get some testing procedures for you?
Are there any codes in the computer?
Is there only one fuel tank on this truck?
Do you have access to a scanner that can read live data?
Ok, There is a TSB related to this condition. It is TSB - 05-06-04-008A
Also, here is a test you can run on the wiring before doing the work in the TSB.
Disconnect the Powertrain Control Module green connector.
Test resistance of each fuel level sender through the harness.
The front sender is pin 54, Purple wire.
The rear sender is pin 73, Dark Blue wire.
Sender range is 40 ohms at E and 250 ohms at F.
If not OK at the PCM pins, test directly at the senders.
With each sender disconnected, verify that the PCM is sending 5v down the signal wire.
I am glad I can help!
It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "5 STAR SERVICE" for assisting you today.
Keep in mind, we can still continue this conversation at no further cost to you even after you rate my answer. Just reply back to me using this page and I will get it and get back to you ASAP!
Please let me know if you have any further questions.
Did you have any further questions?
Oh, and one more thing. There is another TSB related to this condition. It is TSB #PIT4150 and it instructs the technician to recalibrate the PCM to fix this condition.
Hello! It'sCustomerfrom just answer.
I am just checking in to see if you need any further assistance?
Let me know!