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2005 Chevrolet Silverado A/C and heater

Tiny
BRADYPAYNE94
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
I have replaced the blower motor resistor and the blower motor. But the problem is the blower motor works perfectly fine on all speeds when I just turn the key on but not started! However when I start the truck it doesn't work at all!
Monday, November 24th, 2014 AT 9:33 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
That sounds like an ignition switch issue. Is there anything else that doesn't work?
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Monday, November 24th, 2014 AT 10:04 AM
Tiny
BRADYPAYNE94
  • MEMBER
  • 2 POSTS
I haven't noticed anything else that doesn't work.
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Monday, November 24th, 2014 AT 10:12 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
The only thing I can think of is to check for bad body grounds.
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Monday, November 24th, 2014 AT 5:23 PM
Tiny
BRADYPAYNE94
  • MEMBER
  • 2 POSTS
Where is the heater and a/c grounded at?
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Monday, November 24th, 2014 AT 9:20 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check under the hood and dash for body ground straps that may be damaged or disconnected.
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Tuesday, November 25th, 2014 AT 5:12 AM

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