hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
78,900 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2005 GMC Sierra 1500 engine problems

engine problem

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2005 GMC Sierra 1500 Owner Comments

problem #5

Oct 262016

Sierra 1500

  • miles


Exhaust manifold bolts on each side of engin snapped off for no appearant reason / normal use, big concern of exaust fumes entering the cab

- Hanford, CA, USA

problem #4

Aug 092016

Sierra 1500

  • 157,000 miles
Castech cylinder heads on 2001 through 2006 5.3L vortec engines are porous and allow antifreeze to seap into the oil. This is a safety concern as it can destroy the engine (oil doesn't lubricate correctly, sludge buildup) and leave someone, at the least, stranded, at the worst, it can cause a huge engine fire. GM has been aware of this since 2007. They issued a bulletin describing the problem and what needs to be done to fix, but no recall. To fix either the cylinder heads need to be replaced ($2500) or the entire engine needs to be replaced ($5500). My vehicle is a 2005 GMC Sierra 1500 sle. Also the problem has been confirmed by a licensed mechanic. The following is a link to the GM issued bulletin. WW2.justanswer.com/uploads/bluegorilla/2008-12-05_142924_coolant_loss_5.3.pdf

- Boise, ID, USA

problem #3

Nov 042015

Sierra 1500

  • 107,500 miles
Concerning GM 706 castech cylinder heads/GM tsb 06-06-01-019B I have a 2005 GMC Sierra which has slowly been leaking coolant for about 6 months. I have had it looked at and the dealer informed me that I have a 706 castech cylinder head that is notorious for cracking and leaking. The dealer told me there was coolant inside my oil and recommended replacing the engine. As I have begun researching this issue I realize these cylinder heads affect millions of GM vehicles and loyal customers. GM has issued a tsb and are aware of the issue at hand and in my, and many other customers this should have been a recalled item. I am calling on GM to fix this issue/mistake.

- Pekin, IL, USA

problem #2

Oct 262015

Sierra 1500

  • 130,000 miles
Engine oil leak on or around rear main seal. As oil drips while driving the oil lands on the exhaust pipe and begins to burn. This leak landing on the exhaust while hot can catch on fire.

- Virginia Beach, VA, USA

problem #1

Aug 062012

Sierra 1500

  • miles
I found 2 broken exhaust manifold bolts on my 2005 Sierra (70, 717 miles), 1 on each side, 1 was actually missing & the other was just hanging there, I then went to check my wife's vehicle, a 2003 Chevy Tahoe ( 90,420 miles) & that also has 2 missing, 1 from either side, you cant imagine how sick I am at this point, both our vehicles are in need of major repairs, please tell me that General Motors will need to recall these vehicles & make the needed repairs, sick to my stomach & cash strapped, [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Watertown, WI, USA

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