2003 Impala. Car starts and drives fine. when parked for more than 48 hours car won't start w/o a jump. Direct draw I think goes to 10 amp fuse marked PCM (crank) inside & 60amp fuse underhood marked Audio-Defog. When pulling these fuse draw drops from 30 to 10. Any ideas what the draw actually is? Thanks
Country: United StatesMake: ChevroletModel: 2003Year: 2003
When pulling 10 amp PCM fuse & reinstalling get a lot of clicking sounds from under dash. I'm hearing chevy has had problems w/gauge
I'm Neal and I am here to assist you. Only accept when you are happy with my assistance. If I can't help I will open your Question to other experts.
The cluster is a problem in those and can create a draw.
Here is the procedure to test for draw, including what to expect and when as far as draw.
The first thing to do is a test for a major short. Remove the positive and negativecables from the battery. Put an Ohm-meter across the positive and negativecable. If your reading is close to 0 Ohms then you have a direct short. Youneed to trace the short before you can perform the following tests.
In order to check for parasitic draw, you need to be careful so you don't ruin yourmeter. Here's what you need to do.
get a digital meter capable of reading up to 10 amps DC. Your battery must havea reasonable charge for this test - it won't work if your battery is dead.
NealIf U read my question U will see draw tested & linked to 10amp PCM fuse on driver side end of dash.Bob
I did read you question but wanted to make sure you were waiting for things to power down. Based on what you described, I would suspect the cluster.
NealWhat does the 10amp PCM (crank) fuse control?Bob
If you are talking about the 15amp in the underhood fuse box then it only powers the pcm.
NealI'm talking about the 10amp fuse in the panel on end of dash (drivers side) I never mentioned a 15 amp fuse in my questions.Bob
That one on the end of the dash controls the pcm/bcm and the cluster
That is why I specified, Iw anted to make sure we were talking about the same one.
NealWhat is pcm/bcm? Something w/powertrain?Bob
PCm is the powertrain control module which is the engine computer and the BCM is the body control module which controls other functions like lights and locks.
Shop Owner and Mechanic on multiple makes.