Here is what is on that leg. Gauges do not return to zero while vehicle is not operating. The service manager at the lynn smith chevy dealership said the same thing happended to his wife's car several months earlier. I did just that today and it indicated a draw of about 60-milliamps. The Suburban has been taken to several dealers. This left us stranded 3 times! After trying to research this problem and not finding much online, I wanted to share my findings and fixes. Smoke was also detected under the dashboard and wires began to burn.
In looking on the internet for similar problems, it was very easy to find others who had ac delco batteries and their positive post failed. When the cause of the excessive current drain has been located and repaired, remove the J 38758. Exhaust leaks and is loud. I wish there was a search function in the forum to find the answer, as I expect you guys have already been where I am at. The question is now answered and the problem has been solved, so I'm posting this for those who might benefit in the future. Expect to get in my vehicle to come home or even on vacation.
The connections on the battery all are clean and tight. I need to check the interior fuse panel, but need to disable the door switch so as not to damage the multimeter. First electrical problem was when driving at night as soon as turn on headlights, all interior lights would blow, no dash lights, no tail lights etc. I will be continuing to recheck this to fully verfiy wether that fixes this 160mA draw. I didn't wait very long when checking the draw, so it might drop out.
The problem reappeared and seems to be here for good. How long are you letting the vehicle sit idle before testing the system? Whole cluster must be replaced, as it is very dangerous to not know your speed. Disconnect the battery negative cable from the battery negative terminal. Caution Circuit 1240 Left Doors and Circuit 1340 Right Doors are protected by 25 amp circuit breakers that may be hot to the touch, if the circuit is shorted to ground. Since some asked, my Trailblazer is a 4x4 with no aftermarket options. Gather all your receipts the go down to the dealership, since it was not fixed right the first time by an lazy incompetent tech on flat rate, the service manager may be able to 'goodwill' the module.
Things woke up and I saw above 1 amp, then down to half an amp then down to 0. As I explained the math behind parasitic draws, it was suggested that an 85-milliamp draw is not all that uncommon on newer vehicles. Turned key and it clicked and then started up. Push it once and the dome lights do not come on when the car doors open. They are now conducting a test and changing some connectors on the alternater, and it is possible that the extended warranty will not cover the cost. Install the male end of the J 38758 to the battery ground terminal. Dave Funny you mention this! I was hoping that the instrument cluster itself wasn't the problem.
We purchased this vehicle as a family vehicle, but am very concerned with its reliability. Connect a 10A fused jumper wire to the test switch tool terminals. Started truck up and everything seems to be working with fuse out, well except rear ent. I have pulled the battery and alternator. Does your truck have the retained power stuff on it? I have found via Google searches that people sometimes have a frustrating time getting these parasitic current drain problems fixed.
Said possibly bad circuitry in one of the lights. That is why vehicles that only see weekend or occasional use this includes boat owners should have their batteries maintained with a quality battery maintainer. I am going to go like that for the next couple of days to see if that is the issue but if it is, is there any way I can find the fuse for the On Star System so as to disable it? You must wait for these modules to go to sleep or use the sleep function on the scan tool. Popped the hood underhood light already disconnected and placed the meter in line between the negative battery terminal and the negative cable. Just like the title says I have a big drain some where and its killing my battery. Air comes through the center vent when the floor control is on.
Here's the key to the whole matter: even with the override switch keeping the dome lights turned off, there is still a big current draw with the switches positioned as described. I did trouble shoot per the recommendations above and could not identify any appreciable drain. A specialist looked at vehicle and observed that when the engine was started, it charges at 15. Anyone else come across this? Pulled all fuses individually in main fuse box. To get it start up, I have to pump the brake twice to get it to restart. Koconnor78 answered 2 years ago My 2009 tahoe is having some strange issues. I am wondering if its the passlock sensor in the lock cylinder housing? You're basically making the multimeter part of the circuit.
My truck did the exact same thing. But the dome lights were not lit up. The install of a back up battery pack is a great idea, but I would still get the problem fixed. Note the battery reserve capacity, amp hour rating. I am a little baffled. It was the dome light. I purchased a new battery from a different manufacturer and installed it in my Suburban.
As a precaution the battery connections were rechecked and found properly secured, although this should not have caused this problem. It is the old Analog system and I am not using it. Some automakers have responded by shipping their vehicles with solar chargers, to keep the batteries charged as much as possible between the time the cars leave the factory and when they arrive at the dealership. Luckily, we were not hit. You need to at least wait 30 minutes after installing your meter before you can get an accurate reading. Battery was replaced a year ago and bounces right back real strong when jump started but not if I dont fix this battery drain soon! Replaced batery and connections came loose and truck shutdown completely.