Question about 1997 GMC Sonoma

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Replacing the blend door on 1997 sonoma

Can not locate blend door actuator on my 1997 GMC Sonoma. Not getting heat inside the cab.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Ajkill
  • 2035 Answers

SOURCE: my 1997 gmc sonoma

This the problem with IAT bad inlet air temp (IAT) sensor.Get it replaced....................

Posted on Jun 03, 2008

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  • 1 Answer

SOURCE: 1998 gmc sonoma push button 4x4 busting diaphram vacuum actuator

On top of the transfer case is a vacuum switch with 3 vacuum lines connected to it. This switch controls when vacuum is applied to the vacuum actuator. This switch can fail partly and allow fluid from the transfer case to be sucked up into the vacuum lines and anything connected to them as well. When you replaced the actuator before, did you notice any oily fluid inside of it?

Posted on Dec 23, 2008

  • 1 Answer

SOURCE: 2001 GMC Sonoma Extended Cab door handle broken

You should replace the handle with an aluminum version. The best one I have found is sold on eBay for 12 dollars.
Look for the one sold by
mike8756.

It is easy to install, does not require removing any panels. Th first one I replaced took me about 1/2 hour. I hae done several since for friends and now takes about 15 minutes.

Installation instructions are here:

http://www.thirddoorhandle.com/installation/index.html

Good luck.
Tom

Posted on Mar 19, 2009

  • 3600 Answers

SOURCE: 2001 GMC Sonoma Ext cab 4.3l, quit while running

Pull plug wire and install a philips screwdriver into the plug wire get it 1/4 inch away from a good ground and crank the engine over, is there spark? if so check that you have fuel pressure buy renting a fuel pressure test kit from schucks or auto zone and turn the Key to run position with the gage hooked up, it should read 50 PSI turn key off and wait 20 seconds should still have 20 PSI of fuel pressure, if no fuel pressure check fuel pump relay, then check fuse to pump. if you have a bad relay and are not getting fuel then check the oil pressure switch to see if you have oil pressure at the switch if no pressure then the oil pressure safety switch has died and needs to be replaced and should stark after replacing. If you have fuel then check the timing to see if you slipped timing belt.

Posted on Jun 12, 2009

  • 1608 Answers

SOURCE: need the location of knock sensor in my 98 gmc

The knock sensor is on the rear of the motor behind the left cylinder head.Hope this helps.Good luck.

Posted on Feb 02, 2010

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1 Answer

2002 sonoma air temperature stays hot when i turn the control knob. A/C works fine,but the air does'nt get cooler when I turn the knob


Easiest place to start is checking for a broken control knob. Pull the knob off and see if it is cracked/broken on the back side. You can turn the metal control rod then by hand to see if it works. If no problem found there, you will have to check for a blend door motor/actuator that controls heat/cooling attached to the heater box under the dash for proper operation

Jan 06, 2016 | 2002 GMC Sonoma Extended Cab

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Where is the fuel filter located on a 1998 gmc sonoma 2wd extended cab ?


It is on the inside of the truck's frame almost directly under where the driver's seat is located.

Feb 21, 2015 | 1998 GMC Sonoma

1 Answer

Heater blend door


They are under the dash behind the glove box.

Jul 14, 2013 | 1996 GMC Sonoma

1 Answer

Where is the thermostat on 1997 GMC Sonoma located?


Click here to see how to replace the thermostat.

Jan 20, 2013 | 1997 GMC Sonoma

1 Answer

I have a 98 GMC Sonoma and the A/C will not work. It only blows heat even when its in the Max A/C position. Do you think this could be the blend door actuator? It is manual not automatic


Yes - a blend door is definitely a possibility, especially if it blows heat. If the A/C was low on freon - the temperature would be at least ambient temperature.

May 27, 2011 | GMC Sonoma Cars & Trucks

1 Answer

My 2001 gmc sonama heater doesn't work ..only blows out cold air...what's wrong?


This no heat problem is one off two things, you may be low on coolant and its not flowing into heatercore or the actuator motor that controls the blend door is bad, the blend door is a door in the heater boxs that opens or closes to give you hot air or cold.

Dec 09, 2010 | 2001 GMC Sonoma Extended Cab

1 Answer

I have a 2000 GMC Sonoma. The heat gets warm until the fan is turned on then the air turns cold. Acts like it is not switching over from ac to heat. what can i do about it?


Probably the blend door not actuating. I do not have the manual on where your door actuator is. It's usually right of center under the dash. Look under there and see if you can see anything trying to move when you change the temperature setting. Also, if you hear a clicking noise, that would be the actuator stripping it's gears. If youy can find the actuator, take it off and see if you can manually rotate the door hinge. If yes, replace the actuator. If not, you will have to remove the heater box to find out why the door is jammed. The actuator looks like this:

c64cdd8.jpg

Oct 20, 2010 | 2000 GMC Sonoma Extended Cab

1 Answer

1997 Sonoma won't go into 4wd. When the 4wd button is pushed it


check the actuator under the truck at at the transfer case may need adjustment or lube the actuator rod

Dec 14, 2009 | 1997 GMC Sonoma

2 Answers

Location of iat high input sensor


The iat (intake air temperature) is located on the air filter housing. If its reading high its probably unplugged

May 17, 2009 | 2001 GMC Sonoma Extended Cab

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