This is starting to happen in my '09.. are the actuators in the same location?
I can't speak for those fancy-shmancy newfangled vehicles.NebLanche said:This is starting to happen in my '09.. are the actuators in the same location?
sir_randy said:I have read most of these posts on this issue, I have tried the battery disconnect and the turn left side temp up and the right side temp down tricks and still an issue with my 2005 Avy.
Where I am at now is:
Took passenger beauty shield off.
Turned on car and watched the actuator position knob turn and cold air coming out of both sides, watched the actuator further and after a few seconds, the position knob moved back and now hot air coming out of drivers side, but still have cold air coming out of passenger side.
What next?
Any help is appreciated as I am 59 and big boned and it's not as easy getting under dashes and back up as when I was younger and smaller.
Thank you!
mhough said:I can tell you I just had this same problem in my 2004; I found this thread and read through it. I tried several of the proposed methods and the turning one side up and the other down worked. I will also say it didn't work on the first try. With my persistence, my wife calls it stubbornness, I wouldn't give up until it worked. We were in Pigeon Forge in 100* temps w/bumper to bumper traffic, so either trying to get it to work or the heat was going to kill me.
I also had the problem with the air blowing out just on the windshield and floor. I can tell you after much frustration the actuator on the passenger side is the temp blend and the one over the gas pedal controls the flow. Now that's a fun one to work on when you're big boned.
sir_randy said:Looking for info on code b0408? Have a friend working on my AC issue and he is seeing code b0408.
Thank you!
sir_randy said:Thank you SmokeyJoe for the info. Hopefully the person working on my AC issue can get it fixed, been very frustrating for the 2 of us!
Over your driver's side seat.sir_randy said:Still chasing my AC/Heat drivers side issue. Cabin Temperature Sensor is reading 22 degrees. When we clear code B0408 code, AC works, but then cuts back to heat and the B0408 code shows up again. Any idea where the Cabin Temperature Sensor is located?
sir_randy said:
Wow, what a waste of time and effort talking with GM about this issue. Filed a complaint (Claim code......711116183714)yesterday on this issue with my Avalanche drivers side a/c and heat not working properly.
Mark from GM called me just now and all he kept stating is I needed to take my truck to their Dealer and pay to have them diagnose the issue. I informed them that I have had this issue diagnosed with the same equipment the dealer would use by an ex-dealer tech and he determined by the codes that this is caused by the infamous actuator problem documented in this string.
I asked him if they would waive the diag charges if their tech determined that what has already been diagnosed as the issue and he said no. Asked him if they would assist in getting this known issue fixed at a reduced cost, and his answer was no.
I asked him "so, why exactly was he calling me about if he was unable to help in getting this issue resolved", he said they have no record of this being a known issue and due to the age and miles, there is nothing he could do.
I offered to send them this link so he and his fellow GM people would be aware of this issue, but he would not allow me to send it to him.
Buying Ford next time!
steven1955 said:...So, my plan is to replace the drivers side air temperature actuator because I think that will give me (the driver) reliable not hot air, plus I can reach that one without removing the dash. (I've already had it out to try the grease removal on the electrical contact fix, which did not work.) I may do the mode actuator, but maybe not. I can reach it without removing the dash, but it seems to be OK.
Thoughts?
Thoughts on the Dorman non AC Delco actuators?
sir_randy said:My mechanic ordered an aftermarket actuator but it was not what he needed. He ended up ordering a GM left temp door actuator which was $225. He charged me $80 for diagnostics and R/R the actuator, total bill $320.70.
He mentioned that the door went beyond center and the actuator did not have enough strength to move it back. He mentioned when he took the actuator out, it sounded like the trap door sprung back.
He also mentioned that GM has a code they can download to the AV which will keep the door from going beyond center, but I would need to take to a GM Dealer, not sure if they would charge to have that code loaded since it is a known work around to a known issue?
I was not serious when I stated going with a FORD, I am a die hard GM man.
arizona-dave said:I would suggest taking that actuator out and opening it up, and seeing if the contacts are gummed up, and clean it all up - there have been several posts where this fixes the problem for good.
steven1955 said:I've already had it out to try the grease removal on the electrical contact fix, which did not work.
steven1955 said:Quite a few folks have done the "remove the grease from the sliding electric contacts" actuator fix. I did it, but it didn't make any difference.
A thought about the grease. It's been suggested that the grease migrated from the gears to the sliding contacts and contaminating them. I think the grease is an electrical grease chosen to reduce wear on the sliding contacts. (Electrical greases can also prevent or reduce arcing, but not so much at these low voltages.)
So thinking that, why did I clean off the grease on my air temperature actuator? Because it was already malfunctioning, so I didn't think I had much to lose.
I think I will try a Dorman actuator. Maybe they're telling the truth about making it more rugged than the GM one.
steven1955 said:Well, the Av's going in to the dealer next Monday to replace all of the "cheap heavily rusted and one has already failed and been replaced" brake lines. (Replacement lines in stainless steel from Classic Tube. (http://www.classictube.com/) But that's another story.)
Maybe I'll ask about this rumored software update that's supposed to eliminate the HVAC doors traveling to far.
55200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
Bulletin No: PIT3504D
Date of Bulletin: 09/05/2008
Summary Description:
SOME CUSTOMERS MAY COMMENT ON VARIOUS HVAC CONCERNS INCLUDING TEMPERATURE DOORS DEFAULTING TO FULL HOT POSITION OR UNABLE TO OBTAIN DEFROST POSITION. *PE