Posted by Bludool on March 12, 03 at 20:08:05:
Well, just got back from the dealer for the third time, different dealer, however I am still getting the same story. I have a growl or moan from the front end or transfer case when in 2wd. In the morning when cold, very pronounced and very noticeable. Took to a new dealer today, they were able to recreate noise, and substantiate, however, they said like the other dealer to drive for 2000 miles so that they could detect pattern if something is wrong. I currently have 411 miles. During our discussion, they produced a document from GM's technical website. It is Document ID # 1230148 and it states the following.
"Growl Moan or Drone Noise in 2WD May occur in 4WD."
"Condition/Concern:
1) Moan, drone or growl noise from front of vehicle.
2) The condition may be described as a noise that phases (cycles) in and out.
3) The condition usually occurs once the front axle fluid has reached operating temperature.
4) Occurs in 2WD and eliminated when shifted to 4WD or AWD.
5) Intermittently the noise may occur in 4WD or AWD, but may not be as pronounced.
6) Once shifted from 4WD or AWD to @WD, the noise may not be present until the vehicle comes to a complete stop and the vehicle is brought back up to speed.
Recommendation/Instructions:
1) Replacing the front axle assembly may not correct this condition.
2) Replacing the transfer case will not correct this condition.
3) At this time, it is not recommended to replace the front axle assembly, transfer case or perform any repairs.
4) This information will be updated as more details become available.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.
Models
2003 Chevrolet Avalanche 4WD
2003 Chevrolet Silverado 4WD
2003 Chevrolet Suburban 4WD
2003 Chevrolet Tahoe 4WD
2003 GMC Sierra 4WD
2003 GMC Yukon 4WD
2003 GMC Yukon XL 4WD"
Basically, by reading the information provided, Chevy has directed the dealer to have me drive for 2000 miles to see "what develops" wow what great customer service from Chevrolet. This is incredibly annoying and very inconvenient. Any advice would be greatly welcome. And if you are having these symptoms, let your dealer know, and have them pull this document so that we can all find a fix.
Sorry for the length, just a frustrated "newby".