2005 GMC Envoy Questions

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My 05 envoy has bad air suspension, Its bot staying inflated and its driving me crazy! Can it be changed to standard suspension and if yes will that be a hard job to do?
No signals on my controls (original & remote starter
Unable to turn on the ac or heat. Fuses are good. Power to module. Blower is kicking on, but does not blow hot or cold to front or back. Can not change where air blows (unable to adjust). Module DOES light up when the headlight turn on.
Do I need to replace a switch or the entire module?
Thank you,

The ac and heat does not come on in front or in the back what would this problem be?
While im driving the rpms will go up and accleration will decrease. I have a check engine light on with a code P0410
The fluid is Green
It sounds like a raggedy cadillac or a old pickup truck.
Driving on highway out of nowhere wouldn't accelerate and engine reved up. Temp was okay, pulled over notice coolant bubbling never died still starts and run just 30 mph with reved engine
What does the battery light mean?
Car shakes when stopped, in gear and is worse when the AC is on. Have replaced multiple parts, had throttle cleaned, done tune up, etc
I have a 2005 Envoy Denali with 5.3. After filling with fuel the other night it would not restart. After sitting for about 2 hours it restarted and died again 15 minutes later. It keeps doing this. Once it warms up it will shut back off then you have to wait a couple hours and it will restart for a minute then die out again. We have replaced the spark plugs, air filter, canister vent, evap purge valve, and ignition switch. The battery, alternator, and starter were all tested good. Is it possible the fuel pump is over heating?
I had previously had been emailing some one there and did let me know I had to do the reflashing of the suv and fix my throttle body but are you open saturdays
My gas gauge is always on empty . Even when my tank is filled . I fill my tank use a trip meter because the gauge doesn't work .
so I replaced battery in 2 keyless controllers and tried resetting like directions on you tube did not work cannot unlock doors with remote also my rear door does not lock and the wiper does not work either I unlocked rear latch by hand after i did that wiper stopped working at all and the rear back door will not lock even when I lock the doors with the lock switch on driver side door it only locks 2 front doors and 2 rear doors not the rear door
I switch on the car after that turn on the AC , but the air not come out and the compressor switch on.
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