Hi all, I am a proud new owner of a 99 H1. I just got the truck and soon find a problem. When I switched the signal light, the front were working fine, but both rear signals will flash together regardless whether I flashed left or right turn. I dont think this is normal, where should I look to fix the problem?

 

Did the problem start after you replaced the rear lights?

 

I just bought the car and it come like this, so I have no idea where to check. Also I noticed the two big tail lights wont light up when I turn on the running light, they will only on during braking and both side will flash when I flipped the signal lever.

 

Sounds like you may have some wiring swapped around. Are the rear tail lights led? Where are you located?

 

The car is in the shop for fluid change, I can not tell whether they re LED or not now. But I know the front is LED already, so may be they want both side to flash together to increase the load? How do you take out the rear tail light? do I ve to pull the rear wheel well out? I located in Los Angeles.

 

Is the shop your truck is at Tustan hummer? Mike S is a good tech but i hear tustin raised there labor rate to $200 per hr.

 

no, i didnt send to Tustin, just a regular shop that i trusted.

another note, the previous owner said the truck run better without abs, so he move the abs sensor out and now i ve the abs and tt4 light on. he said i can just move the sensor back and the light will be off. do u know where is this sensor?

also where is the ecm located?

 

Did the problem start after you replaced the rear lights?