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    Help 99 Tahoe a/c heater blower problem

    The a/c blower on my 99 Tahoe quit working on low and medium speeds but would workfine on high. Next it was intermittent on high and now it doesn't blow at all. I suspect it is a relay but I can't find the a/c heater blower relay. I checked the fuse / relay box in the engine compartment there...
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