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86 Blazer heater resistor

Tiny
TBJ
  • MEMBER
  • 1986 CHEVROLET TRAILBLAZER
I have an 86 full size Blazer 140,000 miles with a 350 that I have to keep changeing the resistor for the heater. After about a month when you turn it on it only works on high after you tap on the heater solinoid. After replacing the resistor it works fine
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Friday, February 16th, 2007 AT 12:39 PM

2 Replies

Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Hi
I would check the wiring to the resistor, fan and switch for shorts, there is a problem there somewhere causing the resistor to fail

jim
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Saturday, February 17th, 2007 AT 12:36 AM
Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Could be but the best thing to do is check resistance on both this will tell you where you stand.
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Friday, February 23rd, 2007 AT 5:33 AM

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