2007 avalanche

[adambgreen]

For the past year I have had been having issues with my 2007 Avalanche. I first noticed my cruise control going out. Next was my fuel gauge was reading up until 1/4 tank where I would then run out of fuel. Then about 6 months ago my battery started dying. I have gone through 3 batteries so far. The headlights are flashing constantly as I drive down the road and the voltage guage in the truck goes from 12 to 15 volts. I have a red top Altima in it right now. I replaced the brake switch to fix the cruise control, but it didn't work. It has been to the dealership for a total of 5 times. They first told me that it was the BCM. They kept the truck for a week and said that was the issue. When I got it back, there was an error code to service the brakes. I also noticed my brakes felt different. They told me to replace the brake booster and master cylinder. I replaced the booster and master cylinder. Brakes still feel different and service brakes light still on. My battery is still dying. I took it back to the dealership and they said they couldn't find the error. They told me that the negative cable shows a little low on resistance but is in the normal range.The service brake display went off, drove fine with no brakes issues, and truck lasted like this for about 2 weeks. Then recently the brake service display started up again. My brakes started acting different again, the battery has died 3 times in 3 weeks. I trickle charge the battery each time. Then yesterday, I am backing out of a parking spot and my sensor starts to sound. I pout truck in drive and the beeping continues for atleast a minute of forward driving. My traction control light turns on. I finish driving and park the truck. I left truck parked for 3 hours. It starts up fine. I drive truck short distance and turn it off. It sits for 4 hours. I get back in truck and it starts fine. I drive it 30 minutes and park truck over night. 8 hours later I go to start the truck and the battery is dead. Anyone have any suggestions on how to diagnose the issue or solve the issue. The dealership costs too much. They want $220 to fix the negative cable but said they doubt it will fix the truck's issue.

[Jsdirt]

Ahh the wonders of electronics!

 

Just FYI, low resistance on either battery cable is good - you want the power to flow unimpeded.

 

I'd steer clear of the dealer on anything that's not under warranty - just my .02. Find a good local shop that specializes in electrical. Could be as simple as a bad diode in the alternator, to a whole host of wiring or module issues. Good luck on this one!

[gmtech4]

For the past year I have had been having issues with my 2007 Avalanche. I first noticed my cruise control going out. Next was my fuel gauge was reading up until 1/4 tank where I would then run out of fuel. Then about 6 months ago my battery started dying. I have gone through 3 batteries so far. The headlights are flashing constantly as I drive down the road and the voltage guage in the truck goes from 12 to 15 volts. I have a red top Altima in it right now. I replaced the brake switch to fix the cruise control, but it didn't work. It has been to the dealership for a total of 5 times. They first told me that it was the BCM. They kept the truck for a week and said that was the issue. When I got it back, there was an error code to service the brakes. I also noticed my brakes felt different. They told me to replace the brake booster and master cylinder. I replaced the booster and master cylinder. Brakes still feel different and service brakes light still on. My battery is still dying. I took it back to the dealership and they said they couldn't find the error. They told me that the negative cable shows a little low on resistance but is in the normal range.The service brake display went off, drove fine with no brakes issues, and truck lasted like this for about 2 weeks. Then recently the brake service display started up again. My brakes started acting different again, the battery has died 3 times in 3 weeks. I trickle charge the battery each time. Then yesterday, I am backing out of a parking spot and my sensor starts to sound. I pout truck in drive and the beeping continues for atleast a minute of forward driving. My traction control light turns on. I finish driving and park the truck. I left truck parked for 3 hours. It starts up fine. I drive truck short distance and turn it off. It sits for 4 hours. I get back in truck and it starts fine. I drive it 30 minutes and park truck over night. 8 hours later I go to start the truck and the battery is dead. Anyone have any suggestions on how to diagnose the issue or solve the issue. The dealership costs too much. They want $220 to fix the negative cable but said they doubt it will fix the truck's issue.

You have a parasitic draw , not one mention of that , you also never mentioned the code they got from the EBCM for the brake message , wtf dude !!! More info , a lot is missing. Get your receipt and read it and better yet , post it

[adambgreen]

You have a parasitic draw , not one mention of that , you also never mentioned the code they got from the EBCM for the brake message , wtf dude !!! More info , a lot is missing. Get your receipt and read it and better yet , post it

They sent email on excel because I was out of town the first time it went in. And was left on street to pick up when I got it. They never told me the message code or put it on any paperwork.