2008 Pontiac G8 engine NHTSA complaints: Engine And Engine Cooling

NHTSA — Engine And Engine Cooling Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
66,000 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.

2008 Pontiac G8 engine problems

engine problem

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2008 Pontiac G8 Owner Comments

problem #1

Oct 202011

G8 8-cyl

  • 66,000 miles


I was driving down 95 South near baltimore at about 70mph at 7am this morning when my 2008 Pontiac G8 GT (with the L76 6.0lv8 engine) alerted me that the engine was hot. I immediately pulled over and when I popped the hood I saw the upper radiator hose was not attached to the radiator anymore and a lot of coolant had leaked everywhere. Upon closer inspection, I saw that the pastic radiator flange that the hose attaches too had broken off of the radiator and was in the hose. Since the engine cooling system, which I believe is part of the powertrain (GM will try and tell you otherwise) was no longer functioning, I clearly couldn't drive anymore, so I was stranded on the side of a very busy 95. Being stranded is a safety issue, right? besides the immediate warning light/alarm, I had absolutely no prior warning that this was going to happen. It was a sudden and unexpected incident. I did not hear anything before hand. I saw no steam from the hood or anything like that. Nothing. Just the immediate warning light/alarm. Besides an oil change at about 62,000 miles, I have not had any other services since 50,000 miles that would have touched that hose. I have pictures of the hose and the broken flange and I have the broken piece of flange in my possession and the radiator assembly is still in my car if you'd like to see or have any of those pieces. A quick search on the internet shows I'm not the first G8 owner to have this problem. Thank you for your time and I hope to hear from you guys soon!

- Baltimore, MD, USA

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