Question about 1994 GMC Sonoma

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1994 Sonoma service engine soon. Code 13?

My 1994 sonoma 4.3 put out a code 13. I do not know what a code 13 is. Can someone please tell me???

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Actually codes are specific to vehicles, you will need to bring it into a shop and have it checked. Any time a "Service Engine Soon" light comes on, you have and emissions problem, and it will not pass inspection

Posted on Jan 20, 2009

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Service engine soon light is on but its driving just fine as far as i can tell


this could mean that a code set it on the code not necessary related to engine performance
in this case you need to check the code with a tech and find out which code it is and what its related too. but first you could try to disconnect the battery for few moments and see if the code will go a way.

Aug 31, 2011 | 1998 GMC Sonoma

1 Answer

1995 2.2 GMC Sonoma service engine soon light comes on whike driving between 45-60 mph. changed sparkplugs, O2 sensor, fuel filter, sparkplug wires, and have changed oil. (Tried to hook up to OB1 & OB2...


First, you need to have it scanned for codes, then you will know what to look for. Dont replace anymore unneeded parts until you get a trouble code. you will need a OBD1 scanner. You will only know the cost and cause when you find the problem.

Nov 30, 2010 | 1995 GMC Sonoma

1 Answer

I need the firing sequence on the 1994 GMC Sonoma from spark plugs to the distributor cap. My brother got the wires mixed up...he doesn't know where the wires go.


Here is the firing order diagrams for the 4.3 liter V-6 engine and the 2.2 liter 4 cylinder engine, and let me know if you need any help to understand these diagrams, or if you require any further assistance.

4.3 Liter V-6 Engine.


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2.2 Liter 4 cylinder engine.


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Oct 04, 2010 | 1994 GMC Sonoma

1 Answer

Service engine soon light is on2004 sonoma


you will need to have the computer scanned for codes, these codes will tell you why the check engine light is on,

Apr 19, 2010 | 1994 GMC Sonoma

1 Answer

SERVICE ENGINE SOON light comes on & off every 130 miles or so on my 99 GMC Sonoma. Had plugs, wires, cap & exhaust changed.


There to many things that can set off the service engine light on. If there is an Auto Zone or Parts Source around you, have your Sonoma scanned for the DTC codes. It cold be as simple as a faulty gas cap that is setting off your service light to come on.
Thank you for using Fixya.

Mar 26, 2010 | 1999 GMC Sonoma

1 Answer

How do you reset your service engine light on your 98 gmc sonoma


you need a scanner to reset the service engine soon light but it will come back on until you fix the problem you need to check system to get a trouble code

Jan 31, 2010 | 1998 GMC Sonoma

2 Answers

Good day all i need the firing order for 94 sonoma


If you have the 4 cyl. it is 1-3-4-2. If you have the 4.3 V6 it is 1-6-5-4-3-2.

Dec 06, 2009 | 1994 GMC Sonoma

2 Answers

"service engine soon" light appears.


misfire code (engine miss) check tune up plugs and wires

Oct 21, 2009 | 1994 GMC Sonoma

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