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- - no start code 1638 (https://chevroletforum.com/forum/silverado-fullsize-pick-ups-21/no-start-code-1638-a-50438/)

pzqmka

May 6th, 2012 10:42 PM

no start code 1638

i have a 2001 silverado that wont start . i have fuel spark and good compression hooked up my obd 2 and it gave me p1638 which is my alternator. but shouldnt it start from a boost any way? it will turn over all day but no sign of life at all. could i have a ecm problem without throwing a code?? please help.

Doug Roberts

May 6th, 2012 11:48 PM

Take alt to advance I bet its bad if its that shot it could make u not start

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