GMC Yukon XL 2000–2006
Common on this vehicle:Gauge or instrument faultWarning lightCorrosion or rustNoiseLeakReduced brakingStalls or shuts offLoss of engine power, no acceleration
Possible causes
13 causes not drawn
- Fuel Line1
- 4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)1
- Transfer case pump rub (hole worn through rear case half)0
- Rear Axle Seal1
- Rear Cover Gasket1
- Plastic1
- Stem1
- Grease seen at front hub bearing seals (normal purge, do not replace)1
- Valve Stem1
- Frame1
- Radiator1
- Wire1
- Airbag Sensor1
The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.
FaultCrate・GMC Yukon XL 2000–2006・Leak
Candidate cause (the documents say what to do)
Coolant leak at the rear of the vehicle (auxiliary heater hose quick connector)
Some customers may comment on a coolant leak at the rear of the vehicle; bulletin 07-01-37-002 has the details.
The condition may be due to the auxiliary heater hose quick connection leaking, or a broken retaining clip.
What to do
- Install an auxiliary heater inlet and outlet quick connector retainer kit; do not replace the entire auxiliary heater hose line set.
- The retainer kit for the auxiliary heater inlet and outlet hose connector is part number 19130031, 1 per hose.
- The installation procedure is Auxiliary Heater Inlet and Outlet Hose Connector Retainer and Seal Replacement in SI (document 1887838).
Caution: The part number is available, but in the parts catalog it is not presently associated with any of the affected vehicles.
Part numbers printed in the document
19130031Retainer Kit,Auxiliary Heater Inlet & Outlet Hose ConnectLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
No successor statedas stated by GMPartsGiant (checked 2026-10-06) ↗
The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.
In the records
No record states work done for this cause.
See the evidence (1 technical documents, 0 records)
Passages of the technical documents
This information applies to 2005-07 Escalade, Suburban, Tahoe and Yukon models with Auxiliary Heater (RPO C36).
General Motors 2007-08-01
Some customers may comment on a coolant leak at the rear of the vehicle. Refer to bulletin 07-01-37-002 for details.
General Motors 2007-08-01
This condition may be due to the auxiliary heater hose quick connection leaking, or the retaining clip is broken.
General Motors 2007-08-01
Install an auxiliary heater inlet and outlet quick connector retainer kit. Do not replace the entire auxiliary heater hose line set.
General Motors 2007-08-01
A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.
