EI07025 - Click, Tick, Chirp, Blower Motor Noise
| Subject: | EI07025 -- Click, Tick, Chirp, Blower Motor Noise |
| Models: | 2007 Chevrolet Colorado |
| 2007 GMC Canyon |
This bulletin is being revised to close the request information and provide results from the previously issued engineering information bulletin. Please discard Corporate Bulletin Number 07-01-37-001 (Section 01 -- HVAC).
Condition
Some customers may comment on a noise coming from the blower motor.
Cause
Based on feedback provide by dealer technicians, engineering was able to determine the blower motor noise may be related to the motor brush to commutator interface. It is possible to correct the condition by stabilizing the brush -- forcing the brush to one side of the brush box to keep it from rocking.
The current service cover (refer to TSB # 06-01-38-001A) should continue to be used to address HVAC motor noise issues. However, the use of the service cover alone will not address this specific chirp and/or tick/click condition.
Correction
Engineering is currently validating a new design blower motor with a tilted brush to address this condition. If the service cover does not resolve the customer's concern, replace the blower motor.
Parts Information
Part Number | Description |
|---|---|
89019052 | Motor Asm - Blower |
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
D1322 | Motor and/or Fan, Blower - A/C - R&R Or Replace | Use Published Labor Operation Time |
