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1989 GMC sierra 1500 AC not working. what to check first ?

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Freon first, then low and high presure switchs,but if it low on freon you have a leak and needs to be repaired

Posted on Aug 24, 2010

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SOURCE: brake lights dont work

make sure your geetin 12v to brake switch if not jumper a wire then try it

Posted on Mar 29, 2009

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I need an Illustrated Parts Break down for a 1989 GMC Sierra 1500. 350 w/ PS/PB loaded. Steering column Removal Repair or Replace


Hi.

Below you get all the parts breakdown for GMC Sierra 1500, including steering column assembly:

1500 SIERRA

Here diagrams for all 1989 GMC trucks.

If you need to take apart the steering column you will also need wiring. below the color codes and wiring tips:

GMC SIERRA 1988-2005 VEHICLE WIRING

Regards.

Ginko

Aug 31, 2011 | GMC C1500 Cars & Trucks

1 Answer

I have a 1989 gmc 1500 and cant get the brake lights to work i bought a new switch and they still dont work. also i got new bulbs my taillights work but the brake lights do not.


First I would check the fuses. You may have two fuse boxes. One inside and one under the hood. You can check for voltage on both sides of the brake switch to verify proper operation. That's where I would start.

Mar 09, 2011 | 1989 GMC Sierra

1 Answer

My gas gausge doesnt work in my 89 gmc sierra. How


If all your other gauges work, more than likely you have a bad sending unit in the gas tank or bad ground to the sending unit.

Feb 12, 2010 | 1989 GMC Sierra

1 Answer

I have a 1989 gmc sierra 1500 4x4 pickup and when i put the defroster on it only defrost's the driver side.


Check to see if the air supply to the other side is blocked or disconnected under the dash

Nov 11, 2009 | 1989 GMC K1500

2 Answers

Where are the fuse boxes located on a 1989 gmc sierra 1500 full size pick up?


there is one under the hood the other is tucked up under the dash or behined a panel on the side of the dash with door open.

Aug 16, 2009 | 1989 GMC Sierra

1 Answer

Brake lights dont work


make sure your geetin 12v to brake switch if not jumper a wire then try it

Mar 21, 2009 | 1989 GMC Sierra

2 Answers

How to replace a brake light switch for a 1989 sierra gmc 1500 pick up truck


Look up under dash where brake pedal pivots, you should see a switch that is activated by pedal arm.

Mar 07, 2009 | 1989 GMC Sierra

3 Answers

What transmission will fit in an 89 gmc sierra?


if it has a 4.3 liter motor a 86 to a 97 if it has a 350 motor a 81 to a 96 will work hope this helps

Nov 20, 2008 | 1989 GMC Sierra

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