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94 GMC 1500 heat and radio panel


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dr.donut
User

Oct 1, 2017, 7:21 AM

Post #1 of 7 (299 views)
94 GMC 1500 heat and radio panel Sign In

I have the digital display push button for the heat , a/c , and the radio , it doesn't work all the time , can it be taken out , clean the contacts , refurbish on the work bench or do I have to spend the $200 plus for a new one ?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 1, 2017, 9:45 AM

Post #2 of 7 (282 views)
Re: 94 GMC 1500 heat and radio panel Sign In

Cleaning isn't going to help but there is a 3rd choice of going to U pull it and by a used one for $30-$40.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dr.donut
User

Oct 1, 2017, 12:09 PM

Post #3 of 7 (273 views)
Re: 94 GMC 1500 heat and radio panel Sign In

O.K. thanks , that's time I won't waste , I don't like a used one as it's just as old and used as the one I got and who knows how long it'll last , salvage yards around here charge top $$ , dealer is close to $300** , any web sites you know would have it ?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 1, 2017, 2:45 PM

Post #4 of 7 (265 views)
Re: 94 GMC 1500 heat and radio panel Sign In

You'll have to find out if Dorman makes one as that will be the only way you find it outside of the dealer.

I don't know why you are so concerned about using used parts. $30 vs $300, you can buy 10 of them.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Oct 1, 2017, 3:51 PM

Post #5 of 7 (260 views)
Re: 94 GMC 1500 heat and radio panel Sign In


In Reply To
salvage yards around here charge top $$


It's everywhere.... You absolutely what to know what a new one costs before call... I had one try to charge me $10 more on a part than what I could buy a new one for...






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Double J
Veteran / Moderator
Double J profile image

Oct 1, 2017, 7:37 PM

Post #6 of 7 (248 views)
Re: 94 GMC 1500 heat and radio panel Sign In

Back in the day at GM, we cleaned the contacts on these all the time.
There was even a bulletin on it
Had very good luck but due to its age now, it may not be helpful

You clean them using a lead pencil pink eraser only.

Worth a try before buying one.

Here is a excerpt from the TSB

SUBJECT: A/C CONTROL HEAD FLASHES OR ERRATIC OPERATION OF A/C CONTROLS (POLISH TERMINALS)

MODELS: 1988-94 CHEVROLET AND GMC TRUCK C/K MODELS 1990-94 CHEVROLET AND GMC TRUCK TOPKICK/KODIAK MODELS WITH C60 OR C69 AIR CONDITIONING

CONDITION:

A/C CONTROL HEAD FLASHES, PERFORMS ERRATICALLY OR MALFUNCTIONS.

CAUSE:

LIGHT SURFACE CORROSION ON THE CONTROL HEAD TERMINALS.

CORRECTION:

REMOVE THE A/C CONTROL HEAD AND WHILE HOLDING THE UNIT WITH THE TERMINAL CAVITY DOWN (TOWARD THE FLOOR) SO NO PARTICLES WILL FALL INSIDE ON THE CIRCUIT BOARDS, POLISH THE TERMINALS ON BOTH SIDES OF THE CAVITY WITH A LEAD PENCIL PINK ERASER. DO NOT USE AN INK ERASER OR OTHER ABRASIVE SUCH AS A SMALL WIRE BRUSH OR SANDPAPER, ETC. DOING SO WILL REMOVE THE TERMINAL COATING AND DEGRADE THE CONTACT SURFACE.

**PERFORMING THIS PROCEDURE, IN MANY CASES, WILL MAKE REPLACING THE CONTROL HEAD UNNECESSARY.** USING THIS PROCEDURE IN CONJUNCTION WITH THE A/C CIRCUIT DIAGNOSIS FOUND IN THE ELECTRICAL DIAGNOSIS MANUAL AND ESPECIALLY BEFORE REPLACING A CONTROL HEAD FOR ANY REASON IS RECOMMENDED.

AFTER POLISHING THE CONTROL HEAD TERMINALS, BUT BEFORE RECONNECTING, CHECK FOR PROPER TERMINAL CONTACT AS DESCRIBED IN THE APPLICABLE ELECTRICAL DIAGNOSIS MANUAL. IF CONTACT IS GOOD, APPLY DIELECTRIC GREASE (P/N 12345579) TO THE HARNESS CONNECTOR TERMINALS. PLEASE DO NOT APPLY GREASE TO THE CONTROL HEAD.

SERVICE PARTS INFORMATION:

P/N DESCRIPTION QTY 12345579 DIELECTRIC GREASE FROM TUBE AS NEEDED


dr.donut
User

Oct 2, 2017, 7:31 AM

Post #7 of 7 (230 views)
Re: 94 GMC 1500 heat and radio panel Sign In

Salvage yards got them for around $50 , You never know till you ask , clean up option won't take a lot of time so we'll see , thanks again






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