- Worst Model Year:
We don't have a lot of complaints on file for the GMC 2500 Sierra (although feel free to add yours here) -- it's either not very popular ... or it's very, very good.
The 2004 GMC 2500 Sierra has the most complaints, & the most-reported problem is with the 2006 2500 Sierra for brake pads and rotosr wear prematurely.
Worst Reported Problems with the 2500 Sierra
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We're actively collecting data on the worst problems for the 2500 Sierra. If you've had a problem, please help us out and report it.
Latest Owner Complaints About the 2500 Sierra
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brake lines rusted out -- 2004 2500 Sierra:
Alwasy clean salt off truck asap. Truck is only 8 years old but while comming up to a traffic light towing a 6,400lb 36foot goosneck trailer the light turned red and I got on the brakes. Pedal went to floor. The line going from the master cylinder down under the driver to the ABS box lower ... Read more »
This problem has been reported 1 times by other 2004 2500 Sierra owners.
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rocker panel rust -- 2004 2500 Sierra:
Outer rust on rocker panels on each side. Body shop says it's coming through from the rear. $4100 to repair - replace rocker panels. Body shop says this is common - a bad design for this year. Painted with aluminum Chassis Saver for now, but not a permanent fix. Can expect that once the panels ... Read more »
This problem has been reported 1 times by other 2004 2500 Sierra owners.
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starting problems -- 2004 2500 Sierra:
Truck is in good working order but at times will not start until a few hours later. Dealership and other mechanics have advised that there is nothing wrong and they are not sure what to fix. Read more »
This problem has been reported 1 times by other 2004 2500 Sierra owners.
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ticking from under vehicle -- 2006 2500 Sierra:
4/29/09 MANUFACTOR: General Motors Corporation P.O. Box 33170 Detroit, MI 48232-5170 Bought an 06 GMC Sierra 2500-vin#1GDHC24U16E127219 from Eagle GMC of Homosassa 1/26/07-"for my business"-3 mos after purchase-power sources started to fail-replaced them twice, steering box went out twice-replaced-A/C ... Read more »
This problem has been reported 1 times by other 2006 2500 Sierra owners.
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brake pads and rotosr wear prematurely -- 2006 2500 Sierra:
Purchased this nice GMC 2006 in 2007 for close to $65 000.00 and the rotors for the whole truck is failing in an unusual manner. Cheap rotors or defective metal used to produce them? I had noise in the rear breaks when to GMC to have it checked and they found out I needed new breaks. They didn't ... Read more »
This problem has been reported 1 times by other 2006 2500 Sierra owners.