lamp driver module

[Terrybneal]

I have a 1985 camaro that the check engine light is on all of the time. I have tried to pull trouble codes out, but when I jump the A and B terminal, nothing happens, light just stays on.I bought one of those eautorepair.net cards from Oreillys. It has a flow chart that steps ya through it. The last step diagnosed a bad lamp driver module.To my surprise, AC Delco makes the module and it say that almost every GM product has one, at least the computer control cars.Even S-10\'s.

The problem is, I cant find the module on the car. Everyone I have talked to about it, has never heqard of it.The AC Delco part # for the module is 516-21. Has anyone ever heard of it or had to replace it?

[ZR1BLAZER]

its a sensor for the braking system. i know you said 85 camaro but all i could find for a diagram was this? but all chevys in the 80s are damn near built identical. so i hope this helps you locate it. or at least go get the part and look in this area. when you see the old part in the dash you know what it is?

REMOVAL & INSTALLATION



See Figure 1





Fig. 1: ABS lamp driver module location-1992 Lumina shown









Disconnect the negative battery cable.



Remove the fasteners from the lower sound insulator panel under the steering column.



Remove the lamp driver module from the instrument panel harness on the right side of the steering column.



To install:



Position the lamp driver module to the instrument panel wiring harness. Make sure the lamp driver is taped back in the same position.



Install the fasteners on the lower sound insulator to the instrument panel.



Connect the negative battery cable.

[ZR1BLAZER]

well that sucks?? there was a diagram there? oh well here is (http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/0e/e3/13/0900823d800ee313.jsp) where i found it. good luck.