There isn't one. Only solutions are to buy a fm transmitter or an adapter for the stereo.
All GMC Envoy radios from 2003 and up have the option for auxiliary audio input, satellite radio or rear DVD, If there is no rear video system in the GMC envoy most likely there is no aux audio input, the good news is that you can add one to the factory radio, that is the reason why you have a BAND and CD AUX button
the audio input interface plugs into the back of the radio in the 12 pin plug, it also comes with a female t harness in case the port is full this adapters are very simple to connect to the factory radio, to find one use any search engine and type
gmc auxiliary input
All GMC Envoy radios from 2003 and up have the option for auxiliary audio input, satellite radio or rear DVD, If there is no rear video system in the GMC envoy most likely there is no aux audio input, the good news is that you can add one to the factory radio, that is the reason why you have a BAND and CD AUX button the audio input interface plugs into the back of the radio in the 12 pin plug, it also comes with a female t harness in case the port is full this adapters are very simple to connect to the factory radio, to find one use any search engine and type gmc auxiliary input
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20 Gallons.
GMC Envoy was created in 2002.
The procedue is documented in the ownwer's manual.
20 Gallons.
What do you mean you can't put gas in the vehicle? Why not?
Where is the computer located on a GMC Envoy?