code 63 and 53

[mollycooper]

My 1994, 3500 is throwing a code 53 and 63. do y'all have any ideas?

[Robyn]

The code 53 is a high feed voltage (greater than 19.5)

I do not find a 63 listed in the GM service manual. Are you certain on that number..

Check the alternator output. Also check all grounds and such too for possible issues

[mollycooper]

Yep is a code 53 and 63. I have the 53 for a while but the 63 is new. The truck runs fine, but the light drives me nuts.

[moondoggie]

Good Day!

Go to the Member's Area & look under "[FONT=Times New Roman][FONT=Verdana][SIZE=2]Diagnostic Trouble Code (DTC) Code List