By on September 22, 2017

2004 GMC Envoy Radiator Cap Leak, Image: OP

Dave writes:

Hello Sajeev,

I have a 2004 GMC Envoy, 4.2-liter six-cylinder, with about 123k miles that seems to be leaking coolant from somewhere around the radiator cap. Every time I come to a stop with the windows down or pull into the garage I can smell antifreeze. The radiator appears full and the reservoir seems to be maintaining a fairly consistent level of the pink stuff. It never leaks enough that I see wet spots except now and then around the cap, and even then it’s only a few drops at most. I’ve taken it to the mechanic; they double checked all the hoses and connections and even replaced the cap, but it didn’t help.

I replaced the cap a second time thinking I got a bad one, but the smell remains. By happenstance the cap I bought happened to be the exact same brand the mechanic used. I’ve attached a picture of the engine bay showing the areas where I can see dried coolant. The perplexing part to me is that, judging by the splatter pattern near the oil fill and the air filter box, some of the coolant seems to be making it to the fan. Still, I never see any wet spots leading in that direction. Do you have any suggestions?

As a side question, I have been getting an intermittent CEL with an associated P0526 code (fan speed sensor). It will come on for a trip or two and then go away on its own. Any chance the supposed coolant hitting the fan could be causing the CEL?

(Read More…)

By on April 18, 2017

s-l1600-7

Last time on Rare Rides, we carried the racing [driver] and special edition themes to new heights, and featured a shockingly bad Jeff Gordon Monte Carlo special edition of which there were 24 copies made. Our ride today is still made by General Motors, and it’s still about racing, but it’s larger and even more rare. It’s also better, because it has an Oldsmobile logo on the front (albeit not the superior rocket one).

Oh yeah, and it’ll go 140 miles per hour.

(Read More…)

By on April 22, 2015

13 - 1997 Oldsmobile Bravada Down On the Junkyard - Picture courtesy of Murilee MartinThe Olds Bravada started out as an Oldsmobized Chevy Blazer and ended (along with Oldsmobile itself) as an Oldsmobated Chevy Trailblazer. They show up in Colorado junkyards in startlingly large numbers. Who bought Bravadas? For that matter, who bought Isuzu Ascenders? Anyway, because the idea of an Oldsmobile-badged midsize SUV made about as much sense as an Oldsmobile-badged cruel-parody-of-a-luxury-car J-body and is thus sort of interesting, I’ve finally decided to do a Bravada Junkyard Find. We’ll return to the usual Pontiac-badged Daewoos soon enough. (Read More…)

By on March 21, 2011


As Detroit was skipping a decade or two of car R&D by concentrating on packing increasing numbers of 128-ouncer-ready cup holders and faux-wood trim into big trucks, it became necessary to make it clear to the targeted buyer demographics that these trucks really weren’t, you know, trucks. In fact, they were more about protection from street crime and potholes than anything else, which is where slapping Mercury badges on the Explorer and Oldsmobile badges on the Blazer came in. (Read More…)

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