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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: DnStClr on February 12, 2009, 01:59:08 PM

Title: ECM For 87 R10 (2WD)
Post by: DnStClr on February 12, 2009, 01:59:08 PM

The service # on my ecm is 1227747 AKAH. What do the 4 letters mean? Can I get another 1227747 ecm that has different letters or does it have to match AKAH? Thanks

Title: Re: ECM For 87 R10 (2WD)
Post by: Captkaos on February 12, 2009, 02:01:08 PM

All the trucks were 7747 ECMs   The Chip is the difference in engine setups.  The letters aren't important when getting new a new ECM.

Title: Re: ECM For 87 R10 (2WD)
Post by: DnStClr on February 13, 2009, 12:14:11 AM

OK. And the chip is removed and reinstalled in the new ECM,or a performance chip can be burned, right?

Title: Re: ECM For 87 R10 (2WD)
Post by: Dragon on February 13, 2009, 01:18:27 AM

Quote from: DnStClr on February 13, 2009, 12:14:11 AM

OK. And the chip is removed and reinstalled in the new ECM,or a performance chip can be burned, right?

Yes assuming the Chip is in reusable condition(Ie wasn't faulty in the first place, or wasn't statically shorted during removal/reinstallation), and Yes a Performance Replacement Chip can be burned as well.....