ya thats an interesting problem, might possibly be a fan issue. not sure really, i have e-fans so one is on constantly when the A/C is turned on.
I'm sure someone on here can tell you how to check that.
Otherwise its time to get E-fans and call nelson performance up.
how hot out was it when this happened?
1999 GMC Sierra SLE ECSB .... 5.3L w/ Slight Performance Tune / True Duals with Flo Pro Glass Packs.
Project ''Bad Company'' Future = 6.0L (Forged Internals) / Boost (TVS) / 4L65E LvL 5 / AWD Conversion / Full LT's with Cats / Methanol Injection / Lowered 2" / SS Rims / Frame Up resto
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