Thread: Code P0203 Hesitation during Acceleration
View Single Post
Old 02-10-2023, 04:19 PM   #11
Mouse330
 
Mouse330's Avatar
 
Drives: 2011 2SS, 2006 GMC Sierra
Join Date: Jul 2019
Location: MA
Posts: 243
Check the wiring in the harness above the thermostat where the steel clamp is that bolts to the cylinder head
Mouse330 is offline   Reply With Quote