2005 GMC Sierra blower motor

2005 GMC SIERRA
79,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
RTHEROYS
  • MEMBER
  • 1 POST
When I turn on my heat or ac sometimes I can control the blower motor just fine other times and this seems to be more often now the blower motor will not increase in speed
May 24, 2010 at 5:54 PM
Advertisement
Avatar
HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check the relays, switch and resistor for speed control. It may be the resistor. all you need is a test light to test everything.
May 25, 2010 at 5:00 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.