2004 Chevy Aveo brake lights out and shift interlock not disengaging. I replaced the brake light switch at the top of the brake pedal with no change. What is the next most likley direction to look in??
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Re: BRAKE LIGHTS AND SHIFT INTERLOCK NOT WORKING
Hello Joe...The Aveo has had it shares of problems, and this is one of them....NHTSA issued several bulletins on the 04 Aveo...this following is the one pertaining to the shift interlock.....
Make : CHEVROLET Model : AVEO Year : 2004 Manufacturer : GENERAL MOTORS CORP. Service Bulletin Num : 070730007 Date of Bulletin: APR 01, 2007 NHTSA Item Number: 10022265 Component: POWER TRAIN:AUTOMATIC TRANSMISSION Summary: AUTOMATIC TRANSAXLE/TRANSMISSION SHIFT LEVER MAY NOT SHIFT OUT OF PARK (REPLACE BRAKE TRANSAXLE SHIFT INTERLOCK (BTSI) SOLENOID). *KB
Take that bulletin number to your dealer and see if they can help.
Untill you can get it repaired heres a little tip for getting it out of park....There is a a little hole in front of their gearshift lever that can correct the problem, temporarily. It should say "brake interlock release" or something like that. With car running, put a key-size object into it and push down while moving the lever. It does not damage the transmission, it just releases the lock. (make sure your foot is on the brake)
Now for the brake light issue...do you have power at the switch you replaced? If so go to the relay and check there...if no power there it's probably a bad ground.
Also...you may or may not know, but the timing belts on these Aveos are prone to failure at aprox 50k ...these failures have caused severe engine damage. Good luck...i hope the information i've provided you find useful. Please time to rate me.
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check brake transmission shift interlock fuse BTSI. check the NSBU fuse.which is the transmission neutral switch.if all is good check brake light switch.make sure brake lights working if not check fuse.when you apply brake that will energize brake transmission shift interlock solenoid.so you can shift out of park.if brake light switch is okay and fuse good.the brake transmission shift shift interlock solenoid could be faulty.
Sounds like the shift interlock circuit has an issue.
This can be 1 of 3 places
1. The fuse for the Shift Interlock circuit. This is fuse #16
2. The shift interlock switch. This is part of the BPP ( Brake Pedal Position ) Switch that also controls the brake lamps. There are 2 switches in the BPP switch, 1 for the shift interlock, the other the brakes. The circuit in the BPP switch for the shift interlock is the Tan w/ Red stripe wire ( from fuse # 16 ) to Pink w/ Light Green stripe ( to the shift interlock solenoid ). Test both side of this circuit with a meter ( to ground ) you should have power on the Tan w/ Red stripe wire any time the key is in the Start or Run position. The Pink w/ Light Green stripe wire should have power any time the brake pedal is pressed down. If you do not have power at the Pink w/ Light Green stripe wire, you need a new BPP switch. If you have power with the brake pedal pressed on this wire, you need a new Shift Interlock Solenoid.
If this is a new body style 2004 ( not a heritage or lightning ) did you check fuse #16 ? This is the fuse for the shift interlock switch on the brake pedal.
IF this fuse is good, check the shift interlock section of the brake pedal position ( BPP ) switch ( on the side of the brake pedal lever, usually has a yellow c-clip cover on it ). The wires for the shift interlock circuit Fuse #16 to Tan w/ REd stripe wire Pink w/ light green stripe to the shift interlock solenoid.
If there is power on the Tan w/ REd stripe wire, press the brake pedal down, and check the pink w/ light greens stripe wire for power ( switch is closed when brake pedal is pressed.
If you do not have power on the pink w/ light greens stripe wire, you need a new BPP switch. If you have power on the pink w/ light greens stripe wire, you need a new shift interlock solenoid.
It could be a few things....I just had this same problem with my 2008 chevy aveo this week. Also, my check engine light came on the very next day after the gear shifter started locking. I called Bob Bell and they told me that the gear shifter locking is probably due to a sensor going bad that tells your car it is in park. However, after taking my car to my brother-in-law (who has very LITTLe knowledge about repairing cars), we discovered that my brake lights were not working either. He told me that is why my check engine light is on - because it is extremely dangerous to drive without brake lights. We checked the fuses to make sure there was no fuse blown and they were all just fine. So bottom line, the problem was that there is a brake switch under your dash board where your brake is. My switch keeps sticking and will probably eventually need to be replaced. When the switch works properly, my brake lights work fine, my gear shifter unlocks and my check engine light goes out. Not sure how much it is to fix this switch if that is the problem but I hope it helps!
I have replaced several brake light switches in this particular car.The brake light switch is located under the dash on the brake peddle arm and is not expensive or hard to do .This seems to be the biggest problem with the brake lights:)
You need to replace your BTSI (brake transaxle shift interlock) solenoid. I have replaced MANY and it is the problem 99% of the time. The only other thing it could be is your BTSI fuse so check it first. All you have to do is remove the shifter assembly and install a new BTSI solenoid (couple of screws and two connector terminals) and you will be driving in no time. Hope this helps!!
A couple of days ago my brake lights on my 2004 Chevy Aveo wouldn't work, so I attempted to remove the lamp covers to check the bulbs. Also, before this my shifter would get stuck in park and could only be released by pressing the unlock gadget next to the shifter. Back to the brakes...Well, you open the trunk and remove the two screws just like the manual said, but it was very hard to pull off. There's 2 prongs holding the other half of the light on. The lamp will come loose by prying it (very hard). You think the cover will break, but it'll come loose. The bulbs were all OK.
After much frustration and internet info, the STOP LAMP SWITCH, GM#96436331 ($9.30 at Chevy dealer), which is located under the dash and has contact with the brake pedal, was defective. Once replaced, both my brake lights AND SHIFTING problems were cured. So if the brake lights suddenly don't work or you have problems getting the vehicle out of park, check the switch by pushing the prong (end that has contact with brake) of the switch in and out. If it doesn't retract smoothly...that's the PROBLEM. Good Luck.