Mechanic replaced the crankshaft sensor in my 2001 chevy Silverado 2500 hd but was unable to reset it on his computer. heck engine light keeps flashing. Is this due to his inability to reset?
Cars & Trucks - Chevrolet - Silverado 2500 - 2001 Chevrolet Silverado 2500
Answers & Comments
Very unlikely, I flashing CEL usually indicates one of 2 things. Either 1-the issue is happening right now or 2- it is doing damage to the catalytic converter. Usually it is a combination between the 2. What are the codes the vehicle has stored in the computer?
I'm thinking its a short somewhere. Truck will run great. Shut it off and restart 10 mins. later and runs super rough with light flashing and a major rattle in the exhaust. muffler is brand new and had converters cut open to check for breakage and rewelded. all are fine.
The only reading that stays consistent is the O2
sensor shows low. when its running rough different cylinders take turns misfiring. never stays the same. Then restart it and it runs fine.
What code? Probably needs a GMTech2 to do a crankshaft sensor relearn