1999 Reverse Lights Will Not Come On

[wbodyguy112]

Replaced pnp/neutral safety switch. All fuses good.

0v to bulb sockets

14v At both oranges and dark blue wire, 0v at light green at reverse relay while in reverse.

Have not tested voltages between switch and bcm, not sure of what wires to measure.

Radio and power windows do not work unless I rev up to 3k rpm immediately after turning the vehicle over.

Driver side door rarely unlocks from outside using fob, does not unlock when car goes into park. All other doors work perfectly fine.



Am I facing a bcm issue?

 

[Noah the Buick man]

Sounds like your alternator is dying. Cheers, Noah

 

[wbodyguy112]

Sounds like your alternator is dying. Cheers, Noah

Brand new alternator and battery

 

[wbodyguy112]

Brand new alternator and battery

Fixed corroded battery to chassis ground.

 

[Noah the Buick man]

Fixed corroded battery to chassis ground.

It could also be a faulty taillight switch. When you shift into reverse it should activate a switch turning on the backup lights. If the switch is bad they will not come on. The switch is located on the transmission housing on the drivers side. You will need to go under the car.

 

[wbodyguy112]

It could also be a faulty taillight switch. When you shift into reverse it should activate a switch turning on the backup lights. If the switch is bad they will not come on. The switch is located on the transmission housing on the drivers side. You will need to go under the car.

Already stated that was replaced. It's inside of the neutral safety switch.

 

[wbodyguy112]

Trunk Release via fob also doesn't work, need to use button in glove box.

 

[Noah the Buick man]

I'm sorry i'm out of ideas.