My fathers car 2000 Deville, has the P1860 code and the P0741 code. It has been like that for 3 years. Of course Caddy and and place he took it said new tranny.
It does surge and chuggle but very very seldom.
I checked the resistance for the TCC solenoid and it is 0.
I want to test the TCC engagement but have no RPM gauge (digital dash) is there another way to test the TCC.
I definately need to check this especially when it surges and chuggles.
How do I perform the TCC test if I have no rpm gauge?