Three problems related to brake drum have been reported for the 1999 GMC Sierra. The most recently reported issues are listed below.
The rear emergency brakes failed twice prematurely due to broken a retaining pin which caused the emergency brake shoe to engage and wear completely off, also the rear brake pads were replaceed.
The rear emergency brakes failed twice prematurely due to broken a retaining pin which caused the emergency brake shoe to engage and wear completely off, also the rear brake pads were replaceed.
The rear rotors u-joint, carbon build up on throttle, replaced window motor uses 2 qts of oil every 400 to 500 miles , transmission uses 1 qt of oil every 20000 miles , air conditioner fan does not work on high I believe the throttle build up is a safety issue with the gas petal sticking. We have a lemon.