2006 Denali: The all wheel drive is not working properly. Back wheels spin in ice and snow for a few seconds before front wheels engage>>>
IT WILL SLIP A BIT BEFORE ENGAGING, IF ITS NOT ENGAGING AT ALL THEN IT SOUNDS LIKE THE AUTO LOCK UP FUNCTION ISNT WORKING PROPERLY OR THE CLUTCH PACKS INSIDE THE T-CASE HAVE BURNT UP AND NOT GRIPPING EACH OTHER PROPERLY, ITLL HAVE TO GO TO A DRIVELINE SPECIALIST TO CONFIRM AND FIGURE OUT WATS NEEDED, A FULL REBUILD IS APPROX 1200-2000 GRAND DEPENDING ON WHO DOES IT.
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