BCC Find still down?

**Zefyr** · 03-01-2015

Reason I ask is found a peculiar bcc that iirc came from a 95 k1500 5.7 5spd, but I am not sure. The reason it is peculiar is that it has 3 letters and a number. BHA8 I did not, regrettably, take note of what ecm I took this prom from.

I tried searching known ASDU and got the same error.

I am converting a C1500 w/NV3500(MG5) from 4.3L to a stock 5.7 tbi. I should have checked my truck to see what ECM it had before making the 300 mile journey to the junkyards in Vegas. Not knowing what ecm I had, I grabbed several proms from differing ecm/engine/trans combos, and even got a 6396 BDUJ complete ecm. Turns out I have a 7427 ecm with the 4.3 m/t BJFD. According to my searching, the 7427 can run several different codemasks from other ecm's. I am hoping someone knows what this BHA8. Just to be sure I'm not blind I have attached a pic with both proms. If anyone wants the 6396 PM me, it will just sit on my parts shelf until then.
Attachment 8558

**Six_Shooter** · 03-01-2015

Yes, BCC find is still down.

That's actually BHAS. 1993 5.7 Auto

**Zefyr** · 03-01-2015

Damn, Guess I'll be heading back to Vegas. I'm kinda nervous about removing/installing the prom in this setup.

**Zefyr** · 03-01-2015

Anyone want to sell one for a stock TBI 5.7 MG5 3.42 rear?

**JeepsAndGuns** · 03-01-2015

The 16197427 never had a 5.7 manual trans combo. All the 5.7 manuals had a different ecm.
You can still run a 5.7 manual with the 7427, but you will need to do a little tuning. I am running a manual trans on my 7427 conversion in my jeep.

**ony** · 03-01-2015

do you have a shift light on your jeep?

**Zefyr** · 03-02-2015

I am well aware of the 7747 and what can be done with it. I am still running one in my V8 converted S10. For this truck I am looking to keep it plug and play as it will not stay with me for long. I can buy a new prom with proper code for the 5.7 m/t from cardone. The 5.7 is completely stock and I have no plans to change that.

**1project2many** · 03-02-2015

I don't know who mentioned the 7747 or why you replied in such a manner. But if Cardone has a part number for a prom that was used with the 7427 with 5.7 and MG5 trans, you'd better order it because GM has no record of such a beast. JeepsandGuns has literally been down this road with the 7427 plus manual and he might have some tips based on experience to help if you're looking to use that computer or one of its close cousins. You can read this thread regarding the 7427 and manual trans: http://www.gearhead-efi.com/Fuel-Inj...ration-Listing

FYI, Here is the list of L05 plus MG5 calibrations for 93-95 showing only ECM's.

***Found!!!
BCC year is 1993

BCC= AZDP9898 Scan id= 9041 Part number= 16169897
Release date= 12/17/91 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16156480
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
With NA5 FEDERAL REQUIREMENTS
With NA6 ALTITUDE REQUIREMENTS
Without NM8 EMISSION SYSTEM, LEADED FUEL

***Found!!!
BCC year is 1993

BCC= AZDR9917 Scan id= 9051 Part number= 16169916
Release date= 12/17/91 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16156480
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
With NB2 CALIFORNIA REQUIREMENTS

***Found!!!
BCC year is 1993

BCC= BAKP5142 Scan id= 4701 Part number= 16175140
Release date= 12/17/91 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16156480
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
With MT8 MAN 5 SPD NEW PROCESS 109MM 6.34
With NA1 EMISSION SYSTEM, LESS THAN 8500 LB GVW
With NM8 EMISSION SYSTEM, LEADED FUEL

***Found!!!
BCC year is 1994

BCC= BDUY8911 Scan id= 9025 Part number= 16188910
Release date= 08/25/93 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16196396
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
Without NM8 EMISSION SYSTEM, LEADED FUEL

***Found!!!
BCC year is 1995

BCC= BDWB8923 Scan id= 9055 Part number= 16188922
Release date= 11/23/92 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16171199
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
With MW3 MAN 5 SPD NEW VENTURE GEAR 109MM 5.61 1ST O/D
With NA1 EMISSION SYSTEM, LESS THAN 8500 LB GVW
With NM8 EMISSION SYSTEM, LEADED FUEL

***Found!!!
BCC year is 1995

BCC= BDUY8911 Scan id= 9025 Part number= 16188910
Release date= 08/25/93 Engine size= 5.7 Trans Type= Manual trans
ECM/PCM: ECM #16196396
Used in trucks: GMC
Possibly used in:
C1500,2WD,1/2 TON C1500,2WD,1/2 TON C2500,2WD,3/4 TON
C2500,2WD,3/4 TON K1500,4WD,1/2 TON K1500,4WD,1/2 TON
K2500,4WD,3/4 TON K2500,4WD,3/4 TON

Options:
With L05 5.7L GAS 8 CYL (5.7K) V8 TBI
With MG5 MAN 5 SPD GETRAG 84MM 4.00 1ST
Without NM8 EMISSION SYSTEM, LEADED FUEL

**Zefyr** · 03-02-2015

I apologize if I came across wrong in my previous post. From autozones website they direct you to a 1800 number to cardone and ask that you provide the bcc and they will send a prom to you for ~$70. Big thanks on the bcc list. I will order one and if it would be of use I can get a bin from it before installing it into the truck.

**Zefyr** · 03-02-2015

Sorry JeepsAndGuns, I misread your post. I was reading it from my phone earlier. Could have sworn you mentioned the 7747 in your post. I'm still reading up on the BCC's 1project2many posted.

**Six_Shooter** · 03-02-2015

And all of the ECMs that 1project2many has posted are, as far as I can tell, more like the '7747 than the '7427, and therefore use EPROMs and not MEMCALs, so they would be pointless to look into using in a '7427.

**Zefyr** · 03-02-2015

wow, been reading more into this. Seems as though it would be easier for me to get back down to vegas and pull a harness and ecm from a 5.7/MG5 truck to convert it. Or at the very least pull as many 7427 proms as I can find to tear apart and work with. Still nervous about de-soldering the prom and soldering it back in. I know moates sells the socket adapter, but I am most likely not keeping this truck longer than it takes to get it running and sell it.

**1project2many** · 03-02-2015

If you consider that the G1 is about 1/2 the memcal from Cardone, and that you could resell it for something close to original price, the investment may be worthwhile. You could use the V8 memcal you already have and save the gas and time of another trip to Vegas.

You're planning to sell the truck... to whom? Do you have a prospective buyer? If the buyer has no knowledge of customizations and does not do his/her own in-depth repair work, please consider the plight of the next owner if the truck needs repair. A repair shop could run into trouble trying to diagnose and repair a truck in which the computer only responds to scantools that try to talk with an auto trans equipped vehicle. Most will find the truck does not respond as a 5.7 manual trans vehicle, determine from the VIN that it should be equipped with a V6, then either charge the customer more or bail out completely. If they get into the computer and find there are auto trans codes or codes for circuits / systems not installed, often they won't want to deal with a "hacked" system. If you switch to the correct ecm you'll help ensure diagnostics works as the oem expected and you'll help ensure you don't get a call asking how the heck you built the truck from an upset owner.

You already have the ecm, you only need one connector, and most of the circuits will be the same between the two vehicles. The ECM swap may not be that difficult. Without too much work, the terminals can be removed from the current connectors and moved to the connector from the 6396. If the currently installed wiring to the injectors, sensors, and other components will fit the V8 engine, possibly with only a few minor modifications, then there's no need to change complete harnesses. If you do decide to swap harnesses, you should note there are some substantial differences at the pass through fitting at the firewall and you'll want to take note of the size and shape of that before heading back to the wrecking yard. The pass through fittings are sealed together fairly well and changing from one to another can be very difficult.

OTOH, if you decide to stick with the 7427, you should start with the V6 calibration. It's already set up properly for a manual trans. Then move the V8 values to that calibration. Then program it into the '93 V8 memcal so the knock sensor works properly. If you already have the pcm and the calibration, the cost of the Moates adapter is probably less than the cost of another trip to Vegas and you could sell the G1 when you're finished to recover even more $$. If you scour Ebay and CL you might find an old Hypertech or Jet chip for cheap that you could use instead of an adapter along with an eprom, but if you don't already have the eprom that will probably put you close to the cost of the Moates part.

HTH

**Zefyr** · 03-02-2015

That is why I will gladly swap to a 5.7/MG5 ecm and harness. I want whoever ends up with the truck to be able to goto any shop and get it worked on without issue. Thus the reason I want to use stock components. I have a lead on a 5.7/MG5 harness from a friends shop, and it looks like the 6396/BDUJ ecu will work with it. It only costs ~$40 round trip to goto vegas in my Geo (wish I could tune/log it). As far as the next owner goes, I am very up front about mods and things of that nature. Being that 5.7, 5spd, 2wd, single cab, short box, a/c, pw, pl, is a hard truck to find, I'm sure someone will appreciate it more than I will even with the transplant.