2005 Chevrolet Silverado A/C and heater

2005 CHEVROLET SILVERADO
130,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BRADYPAYNE94
  • MEMBER
  • 2 POSTS
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!
Nov 24, 2014 at 1:33 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
That sounds like an ignition switch issue. Is there anything else that doesn't work?
Nov 24, 2014 at 2:04 AM
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BRADYPAYNE94
  • MEMBER
  • 2 POSTS
I haven't noticed anything else that doesn't work.
Nov 24, 2014 at 2:12 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
The only thing I can think of is to check for bad body grounds.
Nov 24, 2014 at 9:23 AM
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BRADYPAYNE94
  • MEMBER
  • 2 POSTS
Where is the heater and a/c grounded at?
Nov 24, 2014 at 1:20 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Check under the hood and dash for body ground straps that may be damaged or disconnected.
Nov 24, 2014 at 9:12 PM
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