"Electronic Control Box"? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kcackler · 03-10-2009, 07:28 PM

Just came across an ad for a truck we're going to see tomorrow. One of the things in the ad has me puzzled, and I can't find any information on what it is talking about. Here is the ad - For a 1986 GMC Sierra 2500

Quote:

156k miles (I think, odometer doesn't go to 100K's). Body in good condition. It has a long bed on it. It's a great hauler. Windshield is cracked. The front plastic grill is cracked. Newly rebuilt transmission. It needs to have the electronic control box replaced to allow for proper choke operation. I just don’t have the time to do the tune-ups needed and search for the parts. Asking $1,100/OBO. I'm moving and it can't come with me.

So the question is - What is this "electronic control box" that he's talking about? I thought the choke was automatic, depending on the temp of the engine. I didn't think there were any electronics involved. (Though my small bit of knowledge is limited to my 77 chevy)

Any ideas what he's talking about here that needs replaced and how much it's going to cost?

Thanks.

gchemist · 03-10-2009, 08:49 PM

He's probably talking about the ECM. It's behind the glove box. You can find replacement at the boneyard for a few bucks.

kcackler · 03-10-2009, 08:58 PM

Thanks for the info.

orbot · 03-10-2009, 09:57 PM

kcackler · 03-10-2009, 10:36 PM

Storm Chaser · 03-10-2009, 10:44 PM

I didn't think the ECM had anything to do with the choke. My buddy's 86 3/4 ton had a standard electric choke on it I believe. The ECM did control the distributor advance among other things.

kcackler · 03-10-2009, 11:36 PM

That's what I thought. Perhaps it's running rough and he only thinks it's because of a sticky/broken choke. We'll see tomorrow.

Thanks for the info.

03-10-2009, 08:49 PM	#2
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: "Electronic Control Box"? He's probably talking about the ECM. It's behind the glove box. You can find replacement at the boneyard for a few bucks. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

03-10-2009, 08:58 PM	#3
kcackler Registered User Join Date: Feb 2009 Location: Russellville, AR Posts: 164	Re: "Electronic Control Box"? Thanks for the info. __________________ Blue - 77 Chevy Scottsdale

03-10-2009, 09:57 PM	#4
orbot Registered User Join Date: Jan 2008 Location: Chula Vista, Ca Posts: 518	Re: "Electronic Control Box"? Last edited by N2TRUX; 03-10-2009 at 11:17 PM. Reason: You must be a subscribing member to offer items For Sale

03-10-2009, 10:36 PM	#5
kcackler Registered User Join Date: Feb 2009 Location: Russellville, AR Posts: 164	Re: "Electronic Control Box"? __________________ Blue - 77 Chevy Scottsdale Last edited by N2TRUX; 03-10-2009 at 11:17 PM.

03-10-2009, 10:44 PM	#6
Storm Chaser Registered User Join Date: Oct 2006 Location: In the Indiana Corn Posts: 449	Re: "Electronic Control Box"? I didn't think the ECM had anything to do with the choke. My buddy's 86 3/4 ton had a standard electric choke on it I believe. The ECM did control the distributor advance among other things. __________________ 1988 R2500 Crew Cab Immediate plans- get it running! Future plans- Rear disc swap & Hydroboost Dually conversion with shackle flip-n-switch 4x4 conversion with 52" springs Maybe some new body panels Who needs a car when they make crew cab trucks?

03-10-2009, 11:36 PM	#7
kcackler Registered User Join Date: Feb 2009 Location: Russellville, AR Posts: 164	Re: "Electronic Control Box"? That's what I thought. Perhaps it's running rough and he only thinks it's because of a sticky/broken choke. We'll see tomorrow. Thanks for the info. __________________ Blue - 77 Chevy Scottsdale

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