Engine light on and off
yes, a ground. or anything. when i had my transmission rebuilt it had some problems with the grounds after it was all done. i had to go back 2-3 times because of the check light coming off and on. was all under warranty so it was free for me. they found a bad ground and decided to add a 2nd one to make sure the problem is fixed. 2 years and not 1 CEL.


