Joined Jan 6, 2003. 53,226 Posts. #2 · Dec 15, 2004. ditchdigger said: after unhooking my mufflers and liking the sound, I decided to take them off and go for a spin. I made it as far as the end of the block before I noticed. that "hey my speedometer is staying at zero".:WTF. If anyone knows why this happened or how to fix it, I would love to. Speedometer not working correctly. Jump to Latest Follow 1 - 19 of 19 Posts. D ... Come join the discussion about performance, modifications, troubleshooting, maintenance, and more! Full Forum Listing. Explore Our Forums. General Discussion Engine/Drivetrain Interior/Electrical 2018+ Chevy Traverse General Discussion Audio/Video/Nav.