Hi group. This Jimmy has a severe hesitation. The scan data shoes the timing at -28 degrees. There is no knock signal shown. The valve timing seems to be ok. The hesitation then went away and the timing returned to normal. The ECM was reflashed at the dealer t...

FIX posted 4/2/2002

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle