Last post on Nov 19, 2013 at 7:45 AM
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Chevrolet Uplander, Pontiac Montana, Pontiac Montana SV6, Saturn Relay, Buick Terraza, Van
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#3 of 109 Re: July 06 "Flickering Lights" TSB [stobar]
Jan 13, 2007 (11:06 am)
I believe I found the answer: "GM has recently issued (revised) TSB # 05-06-03-003B (Headlamps and/or interior lights flicker intermittently) for the 2005 & 2006 Chevrolet Uplander, Buick Terraza, Saturn Relay, and Pontiac Montana SV6 - which instructs the dealer to replace the generator voltage regulator with a kit, part #15926088 (and NOT the entire generator)." Now there was also another TSB issued in 2005 that said to replace the alternator. Should I try for a new alternator? Did that solve the problem, or did the revised TSB with Voltage Regulator replacement fix it? Thanks
#4 of 109 Re: July 06 "Flickering Lights" TSB [stobar]
Jan 21, 2007 (2:11 am)
Took the van in and finally got the Service Manager to order the voltage regulator part once I showed him the TSB information. Will take about a week to come in from Flint, MI. Didn't bring up the alternator replacement from original TSB as after reviewing old posts, I don't believe it solved the problem, and believe the revised TSB to replace voltage regulator did. Not sure if many of the original people who used to post regularly are still reading this Forum, but would like to know if the Voltage Regulator fixed your flickering lights issue. Mine hasn't been that bad, but on long road trips, there were a few times that it got annoying, and I don't want people to think I'm flashing them. Thanks.
#5 of 109 Re: July 06 "Flickering Lights" TSB [stobar]
Jan 21, 2007 (1:49 pm)
The voltage regulator didn't completely fix the problem, but it did improve it. Although occasionally annoying, most of the time it's a non-issue.
#6 of 109 Re: July 06 "Flickering Lights" TSB [stobar]
Jan 22, 2007 (5:46 am)
Prior to having any TSBs applied the issue was very noticable and fairly predictable (release throttle while headlights, rear seat entertainment, and heat were on and the lights would dim and recover in about 1/2 second, as the engine RPMs dropped, the computer figured out that the juice was too low for the load, and commanded something to compensate).
After the first TSB (alternator replacement), the issue remanined, but to a lesser degree. The lights didn't dim as much or as frequently.
Now that we've had the final TSB applied (voltage regulator), I haven't seen the dimming occur even once. This may not mean that it's "fixed", but it sure seems like it so far..
#7 of 109 Whistling Noise
Jan 28, 2007 (7:27 am)
FYI, we just found out what the horrible whistling noise at 65-70 mph is on our 2005 Montana: The Windshield. Apparently it was installed off balance or off center, the dealer installed new one and the noise disappeared. Now if they can just get rid of the other 5000 problems....
#8 of 109 Re: July 06 "Flickering Lights" TSB [stobar]
Feb 06, 2007 (12:04 pm)
Yes the new TSB did fix the flickering problem. I went to a different dealer, who took the time to research with GM. They replaced the generator, and used some kind of tape and wrapped around all the wires. I am finally happy, but doubt I will ever own another GM product, because of all the problems that I had to go through.
#9 of 109 Re: July 06 "Flickering Lights" TSB [tmcgee06]
Feb 07, 2007 (8:07 pm)
I have had my 05 terraza to the dealership 4 times to fix the flickering dash lights. They replaced the alternator twice, the voltage regulator once and now are going to wrap some foil kinda tape around some wires. This is the first new vehicle I ever bought and wish I never bought it. It is an electrical disaster. The radio has been taken out 4 times and sent in, every time I get it back, something else is wrong with it. The last time the aux button did not work so after getting the radio back, I lost my xm band. I have had the door ajar beeper beep for 3 hours with no key in the ignition and no message on the display telling me what door was ajar. After slamming all the doors and starting the engine several times, it finally quiet. I could go on and on with electrical problems! Does other people have other electrical problems with their vans?
#10 of 109 Re: July 06 "Flickering Lights" TSB [dweitzel]
Feb 08, 2007 (3:32 am)
Not like you have had. I'm sorry to hear you've had such a terrible experience. The only electrical issue we've had with our 05 Terraza so far was the flickering lights, and that was addressed with two visits- the first replaced the alternator and the second the voltage regulator.
#11 of 109 Re: July 06 "Flickering Lights" TSB [jerrywimer]
Feb 10, 2007 (4:34 pm)
The only problem I have had with my Saturn Relay 3, 2006 model, with 16,000 miles, is the "flickering lights". I called the dealer and had it scheduled for the TSB fix, they put in a new regulator and its been fine ever since. I had no problems with the dealer and no other problems with the van. (other than the tail light that I broke...)
#12 of 109 Re: July 06 "Flickering Lights" TSB [tmcgee06]
Feb 26, 2007 (11:18 am)
This is the first time I've read about the tape solution. Is that in a new TSB?