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DJStroo
New User
| Posts: 4
| Joined: 05/08
Posted: 05/30/08
10:07 PM
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99 Silverado HVAC Blower Switch - 1st and 2nd speed does not change; 3, 4, and 5 works correctly. Any suggestions?
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jgate
Enthusiast
| Posts: 660
| Joined: 06/07
Posted: 05/31/08
09:33 AM
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Check the blower motor resistors.
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DJStroo
New User
| Posts: 4
| Joined: 05/08
Posted: 05/31/08
08:11 PM
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Could you provide the location? Also, my thought was if it was an open resistor the speed would increase - thoughts? Thanks...
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jgate
Enthusiast
| Posts: 660
| Joined: 06/07
Posted: 06/01/08
05:53 AM
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At the right lower Inner Panel on the HVAC module assembly near the blower motor,
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DJStroo
New User
| Posts: 4
| Joined: 05/08
Posted: 07/03/08
09:15 PM
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Thank you to igate... I removed the lower trim panel and I disconnected the connector from the resistor board and verified the fan switch was sending voltage to the different pins (A different pin for each speed). I purchased a new board for about $55 and everything works perfect. Removing the resistor connector from the blower motor required removal of the cover... Regards.
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