Anyone know if the front grill, bumper, filler, from a 1988 1500 will fit on a 1994 3500?????
Except for the four headlights on the 1988m they look the same.

 

From my knowledge they probably didn't change how they mount the grill, since it is still the same body. I have never taken off the grill or even worked on the lights, so I can't be sure.

 

All gmt400 grills are the same size, just different design. This actually applies to lots of models of chevy trucks. Some people swapped suburban grills into trucks because they like the design. That being said, If you're switching from glass bulbs to the plastic 4-bulb set, you may have to do some wiring but the bulb connectors are cheap.