[Gmecm] eeprom programmers HELP

[kctobyjoe1]

Jay Vessels wrote:
> Hi there!
>
>> i am maybe a confusing guy
>> I have the ORIG BCM and ECM yet in the car
>> acquired a BRAND NEW ECM for $20 but it came w/o the EEPROM
>> My vehicle, as it is, reads ERROR instead of a mileage
>> NO ONE has told me definitely (well no 2 people) what needs to be 
>> replaced to fix the problem
>> EVERYTHING  ELSE works fine
>
> Scott and I have both told you that the BCM, IPC, or one of its 
> components (i.e. the EEPROM or the wiring harness) are at fault, so 
> for some reason you insisted on buying an ECM, and then wonder why it 
> didn't fix it.
>
> If you do not have the Helm manual and are not willing to buy one, or 
> you do have it but for some reason cannot follow its diagnostic trees, 
> take your car to your local GM dealer.  They can fix it.
>
> There are a variety of computers in your Riv.  The ECM runs the 
> engine, the BCM runs just about everything in the rest of the car, and 
> the instrument panel cluster (IPC, or gauge cluster) in that car is 
> actually another computer.  Not too many GM cars had computerized 
> gauges, but the Riviera is one of them, along with the Toronado, 
> Eldorado, and Seville.
>
> The Helm manual for my '89 Eldorado has the following instructions on 
> diagnosing "Error" in the odometer:
>
> Key on, enter diagnostics if possible, check for BCM codes B336 or 
> B556, and repair if present.
>
> Turn off the headlamp switch and twilight sentinel, and note the 
> odometer display.  If it reads "Error":
>
> 1)  Remove ALDL cover and jumper pins A&M.
> 2)  Crank engine for 1 second
> 3)  Note odometer display:
> If all zeros, replace BCM EEPROM.  If "Error", replace instrument 
> panel cluster.
>
> Notice that nowhere in there does GM mention the ECM because it is not 
> involved in the odometer display.
>
> Jay Vessels
> 1982 Chevrolet S-10 Sport, 2.8V6 TBI
> 1984 Chevrolet S-10 Blazer Sport, 2.8V6 (TBI pending)
>
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>
thanks!
for $20 why not buy a spare ecm?
almost like stealing it...just in case anyway