GMC Troubleshooting Questions? Ask a Mechanic for Answers
The sensor is still on the truck. I tried to just plug it off but it must need to see a change in vacuum when stepping on the brake cause the message still pops up.
My name is***** have a code reader. I'm not sure if I have it with me at work. Yes it's still hooked to the intake.
No. I checked the plug on the check valve and now the message is not coming up but I'm not sure problem is fixed.