2009 Chevrolet Avalanche - Page 9 - Answered Questions & Fixed issues

2005 Chevy Avalanche.And you did the Throttle body sensor. Reduce power light coming on, APP and TPS that a shot in the dark, As for the EGR if that is a problem The vehicle is a speed density it also uses a MAF (mass air flow) . Whenever that light comes on I'm finding it in the transmission parameter not the TPS or APP (accelerator pedal position) first the 2005 Transmission has a high failure record, There is a transmission pressure control solenoid that is given wrong input data and send the transmission to self destruct. If this is your second problem similar to last year go ahead put a throttle body sensor, but the APP need to be in sequence with it. As for the EGR no it wont cause sluggish failure it is monitored by the MAF if the MAF fails then its back up by the MAP. For the reduced power light get the ECM reflashed

Sound like you got a manual shifter problem.Either the linkage doesnt line up any more or the inernal bushing isnt allow the gear to line up.This result in being out of range to the target gear and it doesnt allow to go in .Then there are the binding of the gear selecting . That can wear out also , like the bushing, the linkages,

The secure code is unique for each vehicle radio; if not seen in back side (or owner manual), will needto visit the dealer to ask for this.

The gas tank may not be venting properly or your fill tube has been bent or crushed.

It sounds like you either have a dirty filter, or a solenoid is faulty in the transmission. Change the fluid and filter, put some Lucas transmission oil in it and see if that resolves the issue. If the solenoid is dirty then it will cause the transmission to shift improperly, the Lucas will clean it.

you need to clean the throttle body.take the big hose off the throttle assmebly then with some throttle body cleaner and a tooth buush opend the throttle full and spray and brush the black off. then start the engine and let idle for 5 minuets in park then 3 minuets in drive . do not touch the gas peddel.

i had tis problem many times as i am in the car business and the only place that fix it for me is a gm dealer at no charge in less than 10 minutes and they also leave this feature off if i request so it wont lock again but they don't give me a code when they unlock it don't know why the radio must be in car not off i hope this helps you

They had problems with the instament displays on these years. Check with your GM. dealer's service Dept. to see if there's a repair campaine to replace it.

Hope this helps!!

3rd gear trans solenoid is at fault

There is a problem with your wheel speed sensors. This is common and this info helps allot... with the engine light coming on, this is probably the root problem. The Trac Light is coming on because the ECM (Engine Control Module) is disabling the TSS (Traction Control System) because of a engine or trans problem. There is really no quick way just to turn off the system. What will need to be done is to have the system scanned for trouble codes, once a trouble code is pulled we will have a better idea where to look.

There are some Autoparts Store that will do this for free or Autozone.

Keep us updated.

You have to pull the drive axles out to
change diff seals

You can replace the glass separately, but the heating element is in the head of the mirror.

Cant find your brand, year model and cyl number.

you need fault code to solve problem/bring to garage ask for fault code repost

Whats the problem?

Sure, On the engine..... Just Kidding! I need to know the make, model, and engine size

Jack the vehicle up and check your u-joints and make sure they are not loose or sometimes they will bind.You need to remove the drive shaft to check them.Make sure and mark the drive shaft before you remove it.Once you have it out work the front and rear yoke both ways and make sure it is not binding and check it over closely for rust.This is a good sign the one of the joints is worn.Hope this helps and let me know what you find.Good luck.

Locate oil pressure sending switch on side of engine block(small black switch with one wire plugged onto it )kinda looks like a big spark plug.Unplug clean contact and plug back in.If gauge still not working need to replace switch.

Turn the key to the on position. Not the start. And press the gas pedal all the way to the floor 3 times.