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LMC Truck



Username Post: Battery Drain Part III        (Topic#348146)
rod 
Senior Member
Posts: 1581

Loc: kingman,az
Reg: 04-29-00
11-10-17 04:31 PM - Post#2713956    

2000 S-10 Blazer. I checked all the fuses under the hood. battery voltage after setting 3 days was 11.97. all fuses read 0 draw with these exceptions.
ECM B read 10.98, MIR/LKS read .02 & RR/WW read .03
I have no idea if the ECM is supposed to have volts or not. I assume the MIR/LKS is the power mirror adjustment and LKS is the power door locks. why would they draw? and lastly why would the rear window washer draw. in post II, I found the cruise control had a .02 draw.
all totaled, I guess it would knock the battery down after setting a few days. the question is, how do I cure this?
any help will be appreciated.
Thanks Rod in AZ



 
LMC Trucks
rod 
Senior Member
Posts: 1581

Loc: kingman,az
Reg: 04-29-00
11-10-17 07:11 PM - Post#2713967    
    In response to rod

I was setting inside the Blazer tonight, when it was dark, to check for any light which might be on. I found something which I thought was strange. the driver power seat adjustment works when the key is off! is that normal?
Rod in AZ



 
SleeperSS 
Senior Member
Posts: 2522
SleeperSS
Loc: Spanaway, Wa
Reg: 10-17-04
11-11-17 05:27 AM - Post#2713993    
    In response to rod

That's normal...

U.S.C.G. "So others may live"

'96 S-10 SS
'02 BlaZeR2





 
gchemist 
Senior Chevytalk Moderator
Posts: 24158
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
11-11-17 05:29 PM - Post#2714067    
    In response to SleeperSS

Yup, my 95 has power without the key.

One of your locks could be bad. Or a switch.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
SleeperSS 
Senior Member
Posts: 2522
SleeperSS
Loc: Spanaway, Wa
Reg: 10-17-04
11-12-17 08:54 AM - Post#2714132    
    In response to rod

ECM should power down with key off.

U.S.C.G. "So others may live"

'96 S-10 SS
'02 BlaZeR2





 
rod 
Senior Member
Posts: 1581

Loc: kingman,az
Reg: 04-29-00
11-22-17 03:40 PM - Post#2715368    
    In response to SleeperSS

in the big truck forum, someone said disconnect the oil pressure wire. every heard of that? also disconnect the fuel pump. I had the pump replaced last year. suppose there is a possibility that a wire/s got mushed? have never looked under it.
I pulled the rear washer fuse [under hood] and the steering wheel light [at the dash] both had a .004 draw. over night the battery fell from 11.87 to 11.76. radio battery draws 10.75. is that normal?
what happens if the ECM does not power down? replacement time or?
Thanks Rod in AZ



 
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