GMC Yukon 2000–2006
Common on this vehicle:NoiseWarning lightVibration or shudderLeakShifting faultLoss of engine power, no accelerationGauge or instrument faultStalls or shuts off
Record by record
5 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.
Symptom
Component named as the cause
Work done
How it is said to have ended
- says it did not fix it3
- result not stated1
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 (5)
ELECTRICAL SYSTEM4
Manufacturer communication2006 GMC YUKON DENALI ・ 2020-12-07
Aftermarket ALDL/DLC Interface Devices - Diagnostic Concerns
1Fault
- Gauge or instrument fault
- Warning light
- C0561 (general documents only)
- U0100 (general documents only)
- U0101 (general documents only)
- U186B (general documents only)
- U1862 (general documents only)
- The radio may not shut off after the vehicle is shut down, and bus or LAN traffic may stay active, leading to a discharged battery.
- C0561 may be stored in the EBCM, leading to a traction control issue, and there may be no high speed LAN communication with various communication U-codes.
- The SES, MIL or CEL light may be set with numerous communication DTCs such as U0100, U0101, U186B and U1862.
- The transmission may not shift for one key cycle (TCM in default mode), and gauge readings may be erratic or displays may flicker.
2Finding the cause
Possible causes
- Monitoring devices and other electronic accessories such as aftermarket cruise control or police speed checking devices (RADAR or LIDAR) may cause one or more of the listed concerns.
- Many of the problems could be caused by an open connection on the HSCAN bus: a device that connects to only one CAN + causes bus errors and erratic ECU behavior.
Steps to confirm (in the document’s order)
- If normal diagnostics find no root cause, check for a device plugged into the ALDL or Data Link Connector (DLC) for tracking and/or maintenance interval scheduling.
3Correction
Repair
- If SI diagnostics do not identify the source and the device is available, try to duplicate the condition, then remove the device to see whether the condition is eliminated.
- If removing the DLC interface device resolves the concern, tell the customer the result and that they should work with the device's supplier for further resolution.
Caution
- The customer may remove the device for use in another vehicle while theirs is in for service.
- Some devices carry a second DLC connector, with the device and the rest of the harness hidden out of sight, so the technician may not notice that the diagnostic connector is not in the factory location.
Read the sentences of the record
From the manufacturer’s document
- Applies to:Applies to 2021 and earlier GM passenger cars and trucks.
- Condition:The radio may not shut off after the vehicle is shut down, and bus or LAN traffic may stay active, leading to a discharged battery.
- Condition:C0561 may be stored in the EBCM, leading to a traction control issue, and there may be no high speed LAN communication with various communication U-codes.
- Condition:The SES, MIL or CEL light may be set with numerous communication DTCs such as U0100, U0101, U186B and U1862.
- Condition:The transmission may not shift for one key cycle (TCM in default mode), and gauge readings may be erratic or displays may flicker.
- Confirm:If normal diagnostics find no root cause, check for a device plugged into the ALDL or Data Link Connector (DLC) for tracking and/or maintenance interval scheduling.
- Cause:Monitoring devices and other electronic accessories such as aftermarket cruise control or police speed checking devices (RADAR or LIDAR) may cause one or more of the listed concerns.
- Cause:Many of the problems could be caused by an open connection on the HSCAN bus: a device that connects to only one CAN + causes bus errors and erratic ECU behavior.
- Caution:The customer may remove the device for use in another vehicle while theirs is in for service.
- Caution:Some devices carry a second DLC connector, with the device and the rest of the harness hidden out of sight, so the technician may not notice that the diagnostic connector is not in the factory location.
- Repair:If SI diagnostics do not identify the source and the device is available, try to duplicate the condition, then remove the device to see whether the condition is eliminated.
- Repair:If removing the DLC interface device resolves the concern, tell the customer the result and that they should work with the device's supplier for further resolution.
Open the manufacturer’s document (PDF) ↗ The points above were read from this document.
- Remedy
- The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
Owner complaint2003 GMC YUKON DENALI ・ 2008-07-17
1Fault
2Finding the cause
3Correction
Read the sentences of the record
- Fault
- THE CONTACT STATED THAT EVERYTIME HE ACTIVATED HIS LEFT TURN SIGNAL, THE HAZARD WARNING LIGHTS WOULD ILLUMINATE. (3 more)
- Remedy
- HE TOOK THE VEHICLE TO THE DEALER ON NUMEROUS OCCASIONS AND A TECHNICIAN REPLACED THE BATTERY AND ALTERNATOR TWICE, AND THE ENTIRE INSTRUMENT CONTROL PANEL AS WELL.
Owner complaint2004 GMC YUKON DENALI ・ 2007-11-21
Instrument panel vinyl peeling, odometer inaccuracy, and transmission slipping
1Fault
2Finding the cause
3Correction
Read the sentences of the record
- Fault
- THE VINYL ON INSTRUMENT PANEL AND CONSOLE BETWEEN SEATS IS PEELING. (3 more)
- Remedy
- THE BLOWER MOTOR WAS REPLACED.
Owner complaint2001 GMC YUKON ・ 2004-11-04
Dashboard lights, airbag and computer malfunction
1Fault
2Finding the cause
3Correction
Not stated
Read the sentences of the record
- Fault
- DASHBOARD LIGHT, AIR BAG AND COMPUTER MALFUNCTIONED. (4 more)
- Cause
- *BF THE VEHICLES COMPUTER MALFUNCTIONED CAUSING DASHBOARD LIGHTS, AIRBAG, L.E.D, AND BRAKE LIGHTS TO TURN ON.
POWER TRAIN1
Manufacturer communication2000–2003 GMC YUKON ・ 2003-12-04
Transmission Stuck in Third Gear or Inoperative Instrument Cluster
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE. *TT

