GMC Troubleshooting Questions? Ask a Mechanic for Answers
Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner past midnight.
Did I understand correct that the noise is coming from the BTSI solenoid?
Once out of park are you saying reverse and drive will not engage and move the vehicle?
Condition of the trans oil, color, level, odor?
Do these issues only occur with the vehicle cold or can it also occur on a restart after going into a store for example?
There is no adjustment needed when replacing the BTSI and it is only used when shifting from park. SO far I believe your having a concern with the shift linkage out of adjustment causing both the BTSI and transmission issues. Can you check that prior to us digging deeper?
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Since the linkage is not the issue this means we now need to do electrical tests at the BTSI when not working. Do you own a volt ohm meter?
Hello again Chris here,