For 1990-2009 cars only
Noise From A.I.R. Valves on Start-up (Replace A.I.R. Valves)
| Subject: | Noise From A.I.R. Valves on Start-up (Replace A.I.R. Valves) |
| Models: | 1996-99 C/K Models and G Vans with A.I. R. Valves and 7.4L Engine (VIN J -- RPO L29) |
Condition
Some owners may comment on a honking or whining noise that lasts for a few seconds after start-up.
Cause
The air valve goes into resonance due to the air flow through it. This does not affect the ability of the vehicle to meet emissions requirements.
Correction
Install two new A.I.R. valves.
Parts Information
The new valve part number is 12562568. Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Labor Time |
|---|---|
Right J6090 | 0.2 Hr. |
Left J6091 | 0.2 Hr. |
