hi, I don't mean to hijack your thread or anything, I have a similar problem and figured this would be a good place to post my question since the topic is similar and the cars are similar as well.
My girl has a 1995 GMC Jimmy SLE. She has only had it for a few months. I've noticed when in stop-n-go driving with the A/C on, the car tends to get warm. (a few small lines past the the big middle line) But it doesn't get warm when doing constant freeway driving. As long as the A/C isn't on, the cars temp only goes up to a line or two before the big middle line. The time it got the hottest was on a 90+ deg day in stop-n-go driving. It almost got to the 3/4 mark. Has never gotten into the red though. When taking off from the light, I could hear the fan roaring and then as the temps would drop and the fan would quite.
I haven't done anything to the car yet because I don't want to just throw money at it. I've done some reading on this site over the last couple days and have some ideas of what it could be but don't really know what to look for to see if those parts are bad. For example, someone wrote to try spinning the fan with the engine cold. If it does spin what does that mean? If it doesn't, what does that mean? Sorry if thats a stupid question.
Sorry if this is not enough info, I don't know what else to add Iif I forgot some info that would help in figuring out the problem, please let me know and I'll do my best to get that info. I'm new to SUV's and domestic cars, I'm used to working on my Honda so things are a bit different but I'm learning.
Any help would be greatly appreciated.
Thanks