Lt1 ecm
Thread Starter
Intermediate
Joined: Mar 2017
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Lt1 ecm
Hi, I think the ECM is faulty on my C4 1992. I am having it scanned later this week to comfirm that it has gone bad.
So my question is, will other ECM's from other LT1's with the same serv. no. fit if I change the PROM chip?
So my question is, will other ECM's from other LT1's with the same serv. no. fit if I change the PROM chip?
Thread Starter
Intermediate
Joined: Mar 2017
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Getting back to it. If the ECM is dead, other ECM's with the same serv.no. are ok to fit? What are the other numbers for on the id label? Or don't they matter
Last edited by Ian67; Jun 6, 2017 at 08:50 AM.
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Le Mans Master
Joined: Feb 2000
Posts: 9,061
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From: Epping NH
You can have your ECM rebuilt, top of my head I don't recall who does that, but a few have been mention here in the forums. Corvette Central is one place I found, just would have to deal with international shipping.
The CCM (or BCM) handles maintaining the mileage and key security for your car which does need to be reprogrammed if replaced, but I believe there is no issue with just replacing the ECM.
The CCM (or BCM) handles maintaining the mileage and key security for your car which does need to be reprogrammed if replaced, but I believe there is no issue with just replacing the ECM.
Last edited by bac22; Jun 6, 2017 at 08:56 AM.
Thread Starter
Intermediate
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I've found a replacement in the UK for £240. I think that is my plan if it turns out to be at fault. The car is going to have a scanner plugged in to it before I spend any money. Thanks for your advise.
Melting Slicks
Joined: Jan 2014
Posts: 2,478
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From: Downers Grove Illinois
In southern Illinois is a place called SIA Electronics and they rebuilt my ECM for a cold solder problem they are known for. The part number for the 92-93 ECM is 16159278. Make sure to swap out the Memcal (PROM).
Team Owner
Joined: Sep 2003
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If you've a relationship with someone here in the states I'd maybe consider having that person originate the buy of a core maybe and use a repair facility that someone has used in the past.
If an LT1 owner would handle the buy/repair and confirm operation in their car maybe that would be a wise decision and I'd expect to pay reasonably for their assistance.
Maybe post a snapshot of your label, confirm that your PROM is an OE match to the label and move forward. Posting the snapshot might catch the eye of someone parting an LT1 car and offering up the ECM for a reasonable price.
I've sent some electronics for people that weren't in a hurry very inexpensively to Poland and other EU entities. There's very inexpensive shipping options available that aren't often used.
Team Owner
Joined: Sep 2003
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ECM information indicates this is a 3.07(G44) car. If all of that matches I'd be shopping one of them maybe here in the states. Maybe try a WTB in the parts section and see what happens.
ECM only requires a match of the SERV# 16159278 which would be '92 & '93
See what the scan reveals. The scan is going to be done with what hardware and software? Ask and maybe post back!
ECM only requires a match of the SERV# 16159278 which would be '92 & '93
See what the scan reveals. The scan is going to be done with what hardware and software? Ask and maybe post back!
Le Mans Master
Joined: Aug 2015
Posts: 6,118
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From: St. Charles MO
Could be a lot of things other than the ECM. I'd especially look at the ignition control module. Are the fans running as soon as you turn the key on? That's usually a typical sign of a bricked ECM.
Thread Starter
Intermediate
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ECM information indicates this is a 3.07(G44) car. If all of that matches I'd be shopping one of them maybe here in the states. Maybe try a WTB in the parts section and see what happens.
ECM only requires a match of the SERV# 16159278 which would be '92 & '93
See what the scan reveals. The scan is going to be done with what hardware and software? Ask and maybe post back!
ECM only requires a match of the SERV# 16159278 which would be '92 & '93
See what the scan reveals. The scan is going to be done with what hardware and software? Ask and maybe post back!
I know the scanner is a Delphi, but other than that I'll ask what software he's using when I see him
Le Mans Master
Joined: Aug 2015
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From: St. Charles MO
Okay, well then that is not a good sign for your ECM! The 3.07 is your rear axle gear ration, and I'm assuming G44 is the option code for that ratio on your year car. "WTB" just means "want to buy," and he was suggesting that you start a post in the parts forum stating that you want to buy an ECM for your application.
Thread Starter
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Okay, well then that is not a good sign for your ECM! The 3.07 is your rear axle gear ration, and I'm assuming G44 is the option code for that ratio on your year car. "WTB" just means "want to buy," and he was suggesting that you start a post in the parts forum stating that you want to buy an ECM for your application.
I've got a chance of buying a ECM from the UK. The price is $310 delivered. Is that a good price for a ECM?
Team Owner
Joined: Sep 2003
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I haven't seen a "confirmed" repair price from the vendor mentioned earlier in your thread so it's difficult to evaluate. Maybe someone will mention the price from that vendor. Won't maybe help considering your location but then dependent upon how you did with the WTB maybe it could.