I just purchased a low mileage (48,000) 1999 SLS knowing it had electrical problems. The dash has been to Specmo twice and to a couple of mechanics. The dash goes blank intermittantly along with the radio, some interior lights, etc. After driving it about 300 miles it doesn't appear that this problem has anyaffect on the performance of the vehicle. It really goesdown the road nice. It was a 1 owner lease turn in to our local dealer. One curious item is that during the Certified Used inspection process the dealer disovered an error in the transmission. They sent it out to a local shop to have a realay orsomething replaced in the trans and the electrical problem surfaced sometime after that.I realize there may not be a short answer and that there is probably a connection problem somewhere. However, I was looking to see if there was a common thread to this problem or at least some idea if it can be narrowed down to a few specific areas. Thanks.
tyjusti, I too just purchased a 99 sts with 48000 mi in jan 07..... It too had electric problem simular to yours....... After 2 dealers and asking around, I found the car is grounded to death...... lots of electric grounds..... If they are not 100% you'll have various readings and situations.... I found under the rear seat, where the battery is there is another ground that looks like it comes out of the trunk..... Its behind the driver, and bolted into the floor board..... Get that bolt out, and wire brush the hell out of it, and the hole it goes in......Once thats done replace it and coat it with something to keep moisture away...... I dont know if that will fix yours, but it worked for mine..... Good Luck.... let me know rdraggz@yahoo.com
First off check all of your connections. Battery and Ground. Check to make sure all power connections are tight at the fuse box. there is a ground on the alternator....that will crack of work its way loose that depending on how bad it can cause problem such as your. check to make sure the grond from the alternator is tight on the frame . it is located under the fuse box on the passenger side under the hood.
I have this particular model.
-Cluster goes dark when car is started and stays that way until i restart it. It does this occasionally. It can go on working for days.
-High voltage light comes on..showing 17 volts. When i us something like power windows it goes back down to 14.4.
-Sometime cluster flickers on and off when car is shut off.
-i hear a lot of clicking in the fuse box under the back seat when car is shut off.
-sometimes certain command like doors dont unlock when i shift to park even though the cluster is programed to unlock them.
-symptons are getting worse.
I have swapped cluster from a 2000 sts and still have the same issues.
What should i do next? Please help with any ideas.
I have this particular model.
-Cluster goes dark when car is started and stays that way until i restart it. It does this occasionally. It can go on working for days.
-High voltage light comes on..showing 17 volts. When i us something like power windows it goes back down to 14.4.
-Sometime cluster flickers on and off when car is shut off.
-i hear a lot of clicking in the fuse box under the back seat when car is shut off.
-sometimes certain command like doors dont unlock when i shift to park even though the cluster is programed to unlock them.
-symptons are getting worse.
I have swapped cluster from a 2000 sts and still have the same issues.
What should i do next? Please help with any ideas.
KJ.
with intermittent electrics, two things always come to mind ..
- trace all grounds, clean, di-electirc them, tighten.
- connectors - pull, clean and di-electric.
that above, as simple as that sounds, it is a fairly difficult job to complete.
read our thread on electrical ghosts .. a lot of good info there.
with intermittent electrics, two things always come to mind ..
- trace all grounds, clean, di-electirc them, tighten.
- connectors - pull, clean and di-electric.
that above, as simple as that sounds, it is a fairly difficult job to complete.
read our thread on electrical ghosts .. a lot of good info there.
any codes?
.
No codes show up. Is there a way to check the ground on the alternator without taking rad off? Thanks for any input. Also what connector are u referring to. Are they the one that are attached to some of the grounds?
1999 Cadillac SLS electrical problems
