Subject: | Buzz Rattle Flutter Noise From Right Side Of Dash |
Models: | 2007-2008 Cadillac Escalade, ESV, EXT |
2007-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
2007-2008 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL |
This PI was superseded to update model years. Please discard PIT4352.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Some customers may comment on a buzz, rattle, or flutter type noise coming from the front of dash on the passenger side of vehicle
This may be caused by a lack of clearance between the transmission fill tube and the aux heater hose return line running behind the fill tube on vehicles equipped with rear heat. Or lack of clearance between the transmission fill tube and the front of dash/cowl.
The noise can be eliminated by creating a gap between the transmission oil fill tube and the rear heater return line/front of dash by adjusting the fill tube.
Please follow this diagnostic or repair 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.