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2000 Chevy Tahoe Power Door Locks

Tiny
MAYLAY1
  • MEMBER
  • 2000 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
Lately my power door locks would lock while driving and will not unlock with the switch. You have to manually unlovk them door by door. The problem affects my alarm also it the locks are engaged the alarm can not unlock them. I checkl the wiring on the switch and everything seems fine. Please offer me some adice. I heard that there is a relay switch for the locks could that be it and where is it located
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Wednesday, August 6th, 2008 AT 11:11 PM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Key in ignition does chime operates

no check for open wire between BCM and ground (light green wire )

if chime operate check BCM
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Thursday, August 7th, 2008 AT 7:00 AM
Tiny
MAYLAY1
  • MEMBER
  • 5 POSTS
Thanks for the advice! Im not too automotive literate therefore where is the BCM. And when you speak of the wires to check you do mean on the door panel where the switch is correct? Also when I put the key and turn it in the ignition the chime does come on.
Thanks
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Thursday, August 7th, 2008 AT 9:42 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
U had asked about the relays
all relays are located in the fuse box
u have lock and unlock relays
also I believe u have driver door unlock relay too
check fuses
BCM (body control module )
is located left side of instrument panel below steering column

if u can have the BCM scanned that should help
good luck
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Thursday, August 7th, 2008 AT 8:04 PM

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