Inspect the wiring first, it is possible that you disturbed something.

The code is for "circuit" that usually means the internal electrics, but could mean an external wire.

 

ok just looked at it. wires looked fine.

it appears that at one time a squirrel was living under the air cleaner. quite a few acorns and some other debris.

the acorns were lodged against the actuators. they were in pretty tight. cleaned them out as well as the debris.

i will clear the codes and see.

THANK YOU!! hope for the best. ill go for a short ride and tell u what happens.

 

codes will come back. Mine took a year to reappear after the first time then after that a few months then they came on daily. It's only a matter of time. Replace them solenoid actuator thingamajigs. As a pair

 

well that didnt work. at first the light went out and it was shifting fine. then i let the car sit about 15-20 min and the t/c light came back and the hard shifts started not long after.

guess i gotta replace them!!!

i was also reading that the car may need an engine flush due to crud/sludge build up. but my car has 75k and i think its pretty well maintained. what are your thoughts does this sound reasonable??

 

An engine flush? Did you read that here? If you are referring to engine oil, if the engine has been using synthetic oil, definitely not. If it's been dino oil, probably still a no. Now if you're referring to coolant, the Dex-Cool has a 5-year service life, so maybe it needs flushing.

 

ordered actuators:

 

no did not read that here. you guys have not failed me yet. thats why i always ask.

THANK YOU!!!!

 

GM says that even if their dealers offer fluid flush services DON'T. Except for ATF and DexCool, then they say don't use any but the GM branded machines.

Oil change is recommended when replacing the VVT valves. They are hydraulic and depend on clean 5w30.

 

well actuators are in. i will be taking it for a short drive to see if the CEL goes out. was not a hard job at all just was a little chicken to wiggle the actuators.

wish me luck!!!

 

Keep us posted - I thought if one disconnected the battery at the start of the replacement, the CEL would be reset once the job was done and the battery was reconnected.

But it was a few years back that I last did it, so maybe the battery disconnect doesn't reset that particular CEL code???