[Gmecm] gm 92 riv prom chip

[Jay Vessels]

Hi there!

kc wrote:
>> can a 'reputable' GM deal reprogram a PROM easily? Is it something 
>> you'd EXPECT they know what to do??
>> Mine is probably shot in my 92 riv ;-(?
>> what we talking cost if I bought a NEW prom, 3rd party v GM????

What symptoms lead you to suspect the chip is bad?  I ask because it's 
not a failure-prone part.

The factory chips weren't officially able to be reprogrammed, though 
sometimes GM did use parts that could be erased.  Dealers just replaced 
the chip.  Newer GM cars have FLASH memory and those are reprogrammed 
via the data port.

The last chip I bought from GM was about $40.

If the ECM's part number (i.e. 1227730, probably not the one you've got 
but it's an example of what it will look like) is the same, then just 
change the chip and you're fine.  GM used the same ECM for different 
cars and options over the years, but as long as the part number (a.k.a. 
service number) is the same, then you're fine.

Jay Vessels
1982 Chevrolet S-10 Sport, 2.8V6 TBI
1984 Chevrolet S-10 Blazer Sport, 2.8V6 (TBI pending)