RE: Repainting rear bumper guard -- 88 DeVille
I have repaired this problem on a few cars, but they had black not grey. I think you can do it well enough to satisfy yourself. No doubt the professional job would be best as G.A.R.Y. suggests.
I know why you are thinking grey primer, its because the finish is a matte finish. I suggest that you prep the entire rear bumper strip and paint it all, not just the bad area. Mask off the area and use lots of newspaper to protect the other parts of the car, spary speckles fly everywhere. Lightly sand the area so you can feather the edges where it meets good paint. You might want to get a tube of glazing putty to level out the area. Once you paint it I would give it a day or so then I would spary Armour All on it and buff so that it will have a bit of a lustre but still be a matte finish.
I find that these type of jobs bring a lot of pleasure. I like doing them and you will save a good deal of money.
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5