One problem related to sun roof has been reported for the 2004 GMC Sierra. The most recently reported issues are listed below.
The contact owns a 2004 GMC Sierra. The contact stated the vehicle was repaired under a possible silent recall to replace the sun roof glass. After the vehicle was repaired, the contact stated there was a leak in the sun roof. The dealer was notified and made an offer to the contact and told the contact to speak with the dealer who sold him the vehicle. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was 45,000 and the current mileage was 45,065.