1996 Chevrolet Tahoe Q&A
1996 Chevrolet Tahoe Question: When shift into drive or reverse, idle drops to low.
It could be many things you would want to do basic tests to figure out what is going on. You could have a vacuum leak, a leaking EGR valve, or a failed Idle Air Control Valve. Without carrying out basic tests any answer would only be a guess. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online - patrick mannion