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hello all, My 1999 tahoe has a noisy coming from the hvac under the dash. It sounds like a blend door opening and closing. I first noticed it when the circulation button was on with the fan off. sounds like a door is opening and closing and it happens about 2 times a minute. If i turn the...

ended up finding a small coolant leak coming from the top oil cooler line so i went ahead and bought new radiator, 195 failsafe t-stat, and 2 gallons of dexcool 50/50 mix. Seems to now run at the correct temp. thank smatt

new to the forum here and just picked up a nice 99 tahoe with 171k. Just had a simple question as ive heard that the vortec 5.7s dont like the dexcool and should be replaced with just regular green. Is this true or not. Also wanted to ask what your tahoes operating temp is. I live out in the...

Hello just picked up a mint 1999 chevy tahoe 4 door 4x4 and glade to be apart of the forum!