AboutRobert Summers Expertise domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada
Experience 40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.
Organizations CFIB (current) past member AARO and APAA.
Education/Credentials grade 12 plus 2 years college. many aftermarket training courses
Question Why would the truck not start or start and stall when engine load reads 99% on scanner. When engine load reads 2% truck will start and run. Then when load switches to 99% truck immediately shuts down. Could it have something to do with the engine over rev protection?
Answer Hi William.. if you have a load reading before the truck is even running i would suggest that you have a pcm problem. maybe corroded connection because you state that the reading changes... reading with key on engine off should be 2% or less...check for any bad connections at all engine related componets, clean them then try running truck. pay close atten to power distrib box. as i usually find the most corroded connections there...if cleaning connections doesn't help try a known good pcm...or ign module.hope this helps
