2005 GMC Sierra: engine overheating

Filed Jan 17, 2014 · Engine · 100,872 miles · NC

Took vehicle in for new brakes and coolant leak. No complaint about brakes, but complaint about coolant leak. Coolant leak issue is connected to gm tsb 06-06-01-019b and affects castech 706 cylinder heads. The coolant is leaking into the heads because of a known porosity issue. My engine will have to be replaced if the problem is not addressed because of glycol contamination. Gm dealer said to just "keep an eye" on it. A second, independent mechanic, did confirm the coolant leak is not external and my engine will fail if the heads are not replaced. This appears to be a known issue with gm for manufacture years 2001-2006 on the vehicles with the 5.3l engine.

Filed Jan 23, 2007 · Brakes, Electrical · 34,000 miles · CA

Tl* - the contact owns a 2005 gmc sierra hybrid truck. Two weeks ago while driving at 5 MPH the vehicle's steering wheel and the brakes locked. The contact was able to drift to a stop. The vehicle also vibrated, and made a whistling sound. After several attempts the contact was able to restart the vehicle. The vehicle's lost power at red lights; however, it restarted. The dealer stated that they did not have the parts to repair the vehicle, they were also waiting for a technician to diagnose the vehicle. The vehicle has been at the dealere for three weeks. The dealer also stated they didn't know where the parts were coming from, yet they've ordered the parts. The contact was currently renting a vehicle. There were no warning indicator lights present at the time of the incident. Two weeks prior to the failure, the contact's vehicle overheated and the warning indicator light appeared. The dealer replaced the water pump. The contact also spoke to gm and was told they would investigate the dealer. The contact thought there was a failure with the battery, it was defective and serviced under the warranty.

Filed Sep 8, 2006 · Engine · 7,838 miles · NY

Since we purchased the 2005 gmc sierra we have had problems with the radiator hose bursting within the first few months and having to have it towed. Since then we have had several overheating problems. The dealer constantly says they can not find anything wrong. We insisted they change the thermostat on one of our times there = they replaced that and a hose. We came home and anti-freeze was leaking. We thought it may be they overfilled it. Then it kept leaking and the truck overheated again 4th or 5th time. This was just driving home from about 10 miles. We had it towed in again and again were told they can find nothing wrong!!! We want answers to this problem. This truck is used for our business and in a year have had to have a new vehicle towed in 3-4 times and driven in. We want answers. We suggested they change the water pump after talking to another mechanic and they said they had problems with that in a different year truck, but have since fixed it. So instead they send you home and do nothing.

Filed Feb 17, 2006 · Engine · 6,200 miles · OK

Overheating of 2005 gmc duramax diesel engine while pulling small 5th wheel in mountains of colorado. This caused me to have to slow down to the point where I was a hazard to myself and others on the highways because of my vehicle causing a traffic obstruction.

Filed Jan 9, 2006 · Engine, Transmission · 500 miles · CO

Extreme overheating of 3500 duramax while towing. Loss of power and overheating of transmission and engine. Numerous contacts with general motors and attorney general in michigan. Gm acknowledges there is a problem but don't know what the problem is therefore no fix for the problem. Are continuing to find a fix. We tow a 5th wheel in the colo. Mountains and this could lead to very serious problems if the engine should blow and we would have loss of steering and braking.

Filed Sep 19, 2005 · Engine · 2,000 miles · CA

05 duramax is running very warm and overheating while towing. Four times we have towed and all four times the truck ran warm the last time the heads up display said engine over heating. This truck is rated to tow 16,000 + pounds and I'm towing around 15,500 and it can't do it without overheating the coolant and transmission.

Filed Jul 19, 2005 · Engine · 7,500 miles · AZ

Engine overheat, requiring pulling off to shoulder, no A/C for occupants of vehicle including two small children