sod

iTrader: (1)

Anybody have any first hand experience with this code? Looks like it's an issue with the red wire from the alternator to the PCM. Lots of F-Body & Corvette info if you search it...has anybody fixed this issue on a V1?

Any idea if the wire can be accessed from the top or from underneath?

Oh & where is our PCM?

this link seems like it covers it pretty well.

http://www.ls2.com/boggs/dtcs/DTC%20P1637.htm

Thanks!

BudRacing

iTrader: (3)

https://ls1tech.com/forums/16687005-post5.html

07CTS-V

iTrader: (6)

^^haha. You can reach it from the top but the wires are not very long. Usually it's the connector at the alternator. Sometimes you can't see any corrosion until you remove the terminals from the connector.