Last post on Dec 27, 2012 at 9:06 PM
You are in the Buick Regal
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Buick Regal, Engine, Sedan
#8 of 30 Re: Tons of problems and needs help! [zacheryellis]
Jul 29, 2010 (1:21 pm)
Disconnect the battery and connect the cables together to reset the controller's door position. The doors should perform a sweep test to relearn door positions. If this fixes the problem, a revised controller is available. Bulletin #02-01-39-001 is related. If that does not fix the problem, use a scan tool to monitor door commanded and actual door positions. Also check for poor a/c performance problem. It is common to cause different dashboard outlet temperatures.
291 days and 20 hours ago.
Removing the battery cables and putting them together did not solve the problem. I dont know what a scan tool is. my a/c was working very good. I was having no problems until the new battery was installed. There is the push button climate control in the dash and buttons on the passenger door that says cooler and warmer on it. Sometimes when i push around on some of the buttons the outside temp light will quit flashing and i get heat. with the air i get cold on the driver side and heat on the passenger side dashboard outlets. ajusting the climate control on the passenger door does not change the heat to cool.
Posted by Bob 291 days and 20 hours ago.
I understand the ac WAS working ok before, but there is a TSB from Gm on this exact problem and this is the bulletin. It could be just coincidental when you changed the battery the controller is the problem. A scan tool can check the body control module for codes and show you the right direction to go.
#02-01-39-001: HVAC Temperature Difference Side to Side and/or DTC B0361, B0441 Set (Replace HVAC Controller, Splice into Backlighting Circuit) - (Feb 7, 2002) Subject: HVAC Temperature Difference Side to Side and/or DTC B0361, B0441 Set (Replace HVAC Controller, Splice into Backlighting Circuit) Models: 1997-99 Buick Century, Regal 1998-99 Oldsmobile Intrigue with RPO CJ2 Condition Some customers may comment on a temperature variation between the left and right hand ducts. Typical concerns may include that the right side of the vehicle cools down but the left stays warm or the opposite. This condition is sometimes associated by the customer with a recent service visit for other non-related repairs. The codes, DTC B0361 or B0441, may be present but will not illuminate a telltale lamp. Cause The HVAC controller unit and the TEMP door actuator motors rely on a feedback system that supplies the controller with count values in order to accurately adjust the air temperature. When battery power is interrupted to the HVAC controller, the current actuator position values are lost. When power is restored, the controller will perform a "sweep test" of the doors from full cold to full hot and record the end values for reference. Over time, the TEMP doors may develop some flexing when run to their extremes. This flexing allows the count values to run out of range (beyond 0-255) and results in DTC code B0361 or B0441 to set. Correction A revised HVAC controller has been released with new programming that allows for a wider tolerance in the expected range of the TEMP door. Replace the controller using the procedure below: Important: On the 1997 Buick Century and Regal, additional steps are required. You will have to run a jumper wire to the new HVAC controller. Be sure to follow the additional 1997 model year steps below. 1. Disconnect the negative battery cable. Important: On the Buick Regal, the console must first be removed to access the HVAC controller. For Buick Century and Oldsmobile Intrigue, skip to Step 10. 2. Apply the parking brake and block wheels. 3. Shift the transmission to first gear. 4. Remove the console trim plate and disconnect the electrical harness. 5. Disconnect the cigarette lighter sockets. 6. Remove the console storage box. 7. Remove the console control plate and disconnect electrical harness for traction control and heated seats, if equipped. 8. Remove the console retaining bolts. 9. Remove the console from the vehicle. 10.Remove the HVAC trim panel, if equipped. 11.Remove the HVAC controller retaining bolts. 12.Disconnect the electrical harness. 13.Discard the HVAC controller. Important: At this point, you must refer to the 1997 Buick section below if working on that model and year. The section below includes steps to revise vehicle wiring to enable HVAC controller backlighting. 14.If the vehicle is a 1997 Buick Century or Regal, refer to the section below titled 1997 Buicks (Enabling Backlighting Circuit). 15.Connect the HVAC controller electrical harness and install the controller retaining bolts. 16.Install the control module trim plate, if equipped. Skip to Step 23 for the Buick Century and Oldsmobile Intrigue. Continue below for the Buick Regal. 17.Install the console to the vehicle. 18.Install the console retaining bolts. 19.Install the console control plate and connect the electrical harness for traction control and heated seats, if equipped. 20.Install the console storage box. 21.Connect the cigarette lighter sockets. 22.Install the console trim plate and connect the electrical harness. 23.Shift the transmission to PARK and unblock the wheels. 24.Connect the negative battery cable. Additional Steps for 1997 Buicks (Enabling Backlighting Circuit) 1. Remove the radio retaining bolts. 2. Remove the radio and disconnect the electrical harness. 3. Prepare an 457.2 mm (18 in) long, 18 gauge jumper wire. If multiple colors are available, it would be the most convenient to use grey to continue the backlighting circuit in the same color. 4. Locate and splice one end of the jumper wire to the grey wire occupying pin location F4 at the radio harness. 5. Position the radio back into the I/P and route the jumper wire down to the HVAC controller harness location. 6. Using a new terminal (GM P/N 12146447 Micro-Pak .35-.50), attach and install the other end of the jumper wire into cavity C16 of the HVAC controller harness. The row and column position indications are molded into the body of the HVAC controller at the harness location. 7. Connect the electrical harness to the HVAC controller. 8. Connect the negative battery cable and test the HVAC backlighting by turning on the headlamps and varying the backlighting intensity. 9. Install the radio retaining bolts. 10.Install the I/P upper trim panel. 11.Refer back to Step 15 of the Correction section to complete the procedure. (You will have already connected the electrical harness).
Parts Information Part Number Description 10435588 Controller, HVAC (Buick) XXXXXXX Controller, HVAC (Oldsmobile) Parts are currently available from GMSPO.
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#9 of 30 P0102 code 97 Buick Regal LS
Jul 18, 2011 (3:16 pm)
I replaced mass air flow sensor 2x, removed throller assy and cleaned ,installed new gasket,replaced throller sensor,replaced mass air flow connector. the last thing I did was replaced mass air flow sensor again and check engine light did go out,but it stayed off until I turn on the A/C. As soon I turn on A/C check engine light came back on and driver side vent hot air came out and pass side is ok cold air. Which was working fine before P0102 problems started. Any idea what is wrong? In the last 6 months, Battery,starter,alternator,ignition switch,plugs, coil, wheel hubs,rotors,and brake pads all been replaced for different reasons. I would like just 1 month that nothing was wrong with the car. lol If there is a short or bad ground between A/C and Mass Air Flow? where? Can it be the idle solenoid?
#10 of 30 Buick Regal Check Engine Light
Mar 10, 2011 (7:13 am)
#11 of 30 2000 buick regal servise engine light
Jan 11, 2007 (3:17 pm)
The sevice engine soon light was on when we bought this car. we were told to change the EGR valve by a buick dealer. after this fun change, the light still didn't go off. so we thought that we might have to just reset the light. so we brought it to a garage and got it reset. lucky us, a mile down the road, the light came back on. we tried resetting it again, and sure as anything, its back on. does anyone have an idea about this problem, or how we can fix it?
#12 of 30 Re: 2000 buick regal servise engine light [shoprat55]
Jan 11, 2007 (5:59 pm)
Take it back to the Buick dealer(not garage) and have them fix it at no charge.
#13 of 30 Re: 2000 buick regal servise engine light [jipster]
Jan 11, 2007 (7:14 pm)
ty for your suggestion, but the problem with this is we installed it ourselves, the dealer told us what it was, but they didn't do it, so they aren't obligated to do so for free.
#15 of 30 2002 Buick Regal Service Engine Light
Jul 22, 2007 (3:24 pm)
I own a 2002 Buick Regal. I am having some trouble with the car when driving it. I feel a stall or stumble that really jars the car. It is like the car shuts off. This lasted for a number of weeks and the dealer couldn't tell us what was wrong. There was no engine light for weeks while experiencing this problem. Finally the service engine soon light came on and the code we got was for the Mass Airflow sensor. I changed the sensor with a remanufactured unit and reset the code and the car ran fine for 6 to 7 weeks and now it is doing the same thing again but no service engine soon light has come on yet. I checked the sensor and the new one is connected up nicely, the battery cables are clean and not corroded in anyway. There are no codes in the computer at this time telling what it might be. It just has this stumble and it has stalled out a couple of times. Can you give me any advise as to what to do at this point.
#16 of 30 Re: 2002 Buick Regal Service Engine Light [fondo]
Jul 23, 2007 (5:27 am)
Just a guess, but I would take the Mass airflow sensor off and clean off the connections. I was told that MAF's can be cleaned and reused. I had mine replaced (new) several years ago, no problem since. Or, maybe your remanufactured MAF is going bad??
#17 of 30 Re: 2002 Buick Regal Service Engine Light [jipster]
Jul 24, 2007 (6:36 pm)
I will give that a try. The MAF sensor was pretty expensive but I wouldn't doubt it would go bad being a remanufactured unit. Do you think I should try to get a new unit and not one that is remanufactured?