Join Date: May 2017
Location: Bossier City, Louisiana
Re: 5.3 In 69 El Camino ECM Location
I have my original 5.3 liter "896" PCM from the 1999 donor truck installed above the glove box but beneath the dash cover. A "411" PCM from a few years later is the same physical size and will fit in the same location - just has a little more memory and logs data faster. The Dirty Dingo people sell a bracket for these PCM boxes that gives you a hole in each corner of the bracket for mounting these modules.
Works for me.
1970 El Camino under Reconstruction - 5.3L LS VORTEC Engine and 4L60E Transmission