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Discussion in 'The Garage' started by Spikehead, Nov 12, 2012.
Anyone replaced one? I'm down to 2 of 5 speeds and need to replace it before more snow flies.
They are -usually- a 10 minute job. -usually- the glove compartment comes out and it is pretty obvious behind that. Most of the time you spend more time cleaning out the glove compartment so you don't spill everything than you do actually replacing the resistor block.
Having said that, I'll look to see if that is where yours is, sometimes you can reach around and not even have to do that but it depends 100% on the particular vehicle.
Here's a link for a 1997, I suspect yours is similar if not identical:
The image from that page:
Also there are a couple youtube videos, I didn't look at it though:
Hope that helps.
Thanks. My Dakota was firewall mounted under the hood and was maybe a two minute job, but I wasn't sure where the General had hidden the damn thing.
The power module for your 02 Silvo is located under the right side of the dash. You'll need to remove the HVAC close-out cover under the right side passengers dashboard. It's located just under the glove box. Look at the fan motor when you remove the close-out panel and you'll see it. The module has about 6 wires going in and two coming out. The two coming out go to the blower motor. You can't mistake it for anything else
The connectors on the newer ones seemed to have melting problems, not sure about the older ones.
They have a TSB for this issue. Check with your local dealer or repair shop for further info.
I remember replacing it on my '99 GMC Sierra. Your new body style should be the same. The replacement part looked a little different from the original, but it worked. I had to buy a special deep socket (7 mm ?) to be able to disassemble the housing so I could access the part. It was nice to have all the fan speeds again though.
I ordered a replacement online and replaced the OEM one that was cooked.
It took me about 30 minutes since I'm pretty slow soldering and I didnt want to have to cut any wires and redo it. It required cutting and soldering of about 12 wires and I used heat shrink on all the joints.
Worst part about the repair is that it's a fairly inconvenient place to work. Had to find a bucket that was the right height to sit on so i could lean in and work in the space under the dash.