1994 C/K 3500 interior fan makes noise for about 2min when engine starts /stops

Asked by Aug 09, 2015 at 04:56 PM about the 1994 Chevrolet C/K 3500 Crew Cab 4WD

Question type: Maintenance & Repair

I am writing to ask for a suggestion for repair.  my truck's interior fan has recently starting making noises as if the fan blades are striking something - but only for about two minutes and only when i start the truck and then when i turn it off.  I put my hand up behind the fan motor and i found a plastic grate with a white plastic panel lying on opt of that.  if i push up on the white plastic panel the noise stops, when i release the noise starts.

2 Answers

73,845

Well you know were the problem is, your going to have to investigate further. Pull out the fan motor and look at the squirrel cage for rub marks, try to see were the interference is. Also see if the squirrel cage is spinning true, sometimes they get out of whack, just take care in bending true again. Also see if there is wear in the fan motor bearing by wiggling the squirrel cage. If so, replace the fan motor, you will have to attach the original squirrel cage.

Best Answer Mark helpful

thank you; this is helpful and I will follow thru on this suggestion.

Your Answer

Chevrolet C/K 3500 Experts

  • #1
    cooldad47
    Reputation
    180
  • #2
    tennisshoes
    Reputation
    110
  • #3
    Dieselman1990
    Reputation
    90
View All

Related Models For Sale

Used Chevrolet C/K 2500
198 listings starting at $2,598
Used Dodge Ram 3500
84 Great Deals out of 2,234 listings starting at $3,950
Used GMC Sierra 3500
9 Great Deals out of 238 listings starting at $6,995
Used Chevrolet C/K 1500
3 Great Deals out of 858 listings starting at $2,000
Used Ford F-350
299 listings starting at $6,949

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.