GMC Yukon XL 2000–2006
Common on this vehicle:
Record by record
1 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.
Component named as the cause
Work done
A ribbon is as wide as the records that state both of its ends (only the commonest are drawn). A record that names several symptoms or components runs through each. Orange is records that say the fault came back or was not fixed. Results come from owners’ reports only; one that does not say is “result not stated”. None of this is a likelihood of a cause or a rate at which work succeeds.
Read the records one by one (1)
ELECTRICAL SYSTEM1
Manufacturer communication2000–2006 GMC YUKON XL ・ 2021-06-14
ECM Software Update for Auto Stop State of Charge Threshold
1Fault
- The engine control module (ECM) software may allow the Auto Stop to occur at a state of charge below 65%.
2Finding the cause
Possible causes
- Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge.
Steps to confirm (in the document’s order)
- Involved vehicles are marked "open" on the Investigate Vehicle History screen in the GM Global Warranty Management system.
3Correction
Repair
- Dealers are to reprogram the K20 Engine Control Module.
Parts
- No parts are required for this software update.
Caution
- Do not download or install the files wirelessly.
- Clear DTCs after programming is complete.
Read the sentences of the record
From the manufacturer’s document
- Applies to:The model list includes the 2021 GMC Yukon and Yukon XL.
- Condition:The engine control module (ECM) software may allow the Auto Stop to occur at a state of charge below 65%.
- Cause:Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge.
- Confirm:Involved vehicles are marked "open" on the Investigate Vehicle History screen in the GM Global Warranty Management system.
- Repair:Dealers are to reprogram the K20 Engine Control Module.
- Parts:No parts are required for this software update.
- Caution:Do not download or install the files wirelessly.
- Caution:Clear DTCs after programming is complete.
Open the manufacturer’s document (PDF) ↗ The points above were read from this document.
- Remedy
- Service Update Bulletin (Labor Codes Added). Certain vehicles may have a condition where the engine control module (ECM) software allows the Auto Stop to occur at a state of charge below 65%. Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge. Dealers are to reprogram the ECM.
