2007 Chevy Avalanche V8 Four Wheel Drive Automatic 43700 miles
The Avalanche transfer case has 2WD, Auto, 4WD High, and 4 WD Low. The vehichle can theoretically be operated safely on dry pavement in either 2WD or Auto. Auto senses when 4WD is required. The other night the message flashed that stabilitrak was off. The vehicle had been operating in AUTO without any problem for much of its life. When the message flashed it shifted to 4WD High. It would not go back into Auto so I put it in 2WD. Turned Stabilitrak back on and it would not go back in Auto. Next day tried to reset and same problem. On the way to have the tank filled the next day, the process repeated itself and the Check Engine Light came on. Not sure if the two are related or if this is coincidence. Stopped and filled it up and when I went to start the engine it just cranked which has never happened before. Turned off AC and it started. Dropped at dealer. Dealer indicated that codes pointed to a bad fuel pump. Not sure why that would affect the stabilitrak. Dealer is telling me to ignore the message and drive in 2WD and not to drive on dry pavement in AUTO. Nowhere in the manual does it say that. Nothing I have read anywhere indicates that is a problem other than to affect fuel economy. Sales guy said it was not a problem (I know, sales guys say anything). Could this just be a faulty or corroded sensor or have you heard of other similar problems? Could it be tied to the fuel pump and the entire fuel system and related sensors? Thanks
have the same problem?
Tuesday, June 23rd, 2009 AT 3:00 PM