1993 GMC Suburban clicking noise under dash

REDNECKSULLY

MEMBER
1993 GMC SUBURBAN

Heater problem
1993 GMC Suburban V8 Four Wheel Drive Automatic

there is a clicking noise when I start and turn off the car, and when I change the heater fan position. Now the fan wont blow, and still clicks. Can you please help by emailing me a diagram of how to get heater fan from under dash please

3 Replies

EELTTAM

MEMBER
2 POSTS

". There is a clicking noise when I start and turn off the car, and when I change the heater fan position."

My 96 suburban is doing the same thing. I've also heard this noise in other full size GM trucks. I'd like to get it fixed, it's quite annoying.

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Sunday, February 7th, 2010 AT 4:59 PM

CJDUHON

MEMBER
1 POST

Get it to a good mechanic quick. You have a short in the electrical and they can fix it fairly quickly. I brought mine to a good GMC Mechanic in town I've grown to trust and a light switch needed to be changed out.

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Tuesday, March 13th, 2012 AT 3:49 PM

DRCRANKNWRENCH

MECHANIC
3,380 POSTS

It is probably a relay as they ca keep clicking even after you turn off the truck. It will eventually put a pulse load on components or it is being caused buy a component and I thingk the advice above is good to take as it is something that can damage sensitive electronics

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Tuesday, March 13th, 2012 AT 6:39 PM