who installs after market navagaiton systems in an h3 2007

Asked by Mar 01, 2008 at 03:22 PM about the 2007 Hummer H3

Question type: Maintenance & Repair

at sewell hummer in dallas texas, I had navagation system installed.  Now my onstar volume is so low that it cannot be heard and the voice on the navagation is also extremely low.  After it was installed they now tell me that nothing can be done and mine was the first one they had ever done.  My question is can this be fixed??  Why would they tell me of this option if it had not been checked out before hand.

Thank you for your help and response to this matter

Joe Brooks




2 Answers

42,925

Take this to a different Hummer dealer or another GM dealer. Sounds like they are just shooting you through the grease.

had a nav system installed that everyone said was terrible and it functions just like the add says. it was done by a dealer who routinely does it. hendrik cadillac in Cary, NC

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