Question about 1994 GMC Suburban
Your right about the run bad the engine and battery grounds are the reason. Under the batery and around their are many diferent wires that are connected to the bidy and the raditor suport right around the battery, After awhile they get rusted and the connections become bad. Remove the battery and the battery box and you'll see the problem, all of these cars do it some. Take every wire off and clean them with a wire brush till they look like new and the place they connect to the body, theirs more than a few so look around their are more on the firewall and in all the kick panels and in the cargo area anywhere near a light. the ones near the battery give the most problems and get them and any that look bad and any that look good do em anyway. the fire wall has grounds too but they don't fail much but engine work and engine changers get in a hurry and leave them off jump starters tend to burn some of the grounds though and bad plug wires can send power were it needs not to go the ingtion coil can get burnson the sides that are a telltale. the ingtion module itself can fail partly as the coil leaks, watch it run in the dark and you might see the problem or if your brave just run your hands over the wires and parts till you feel the problem. ( might even knock you for a loop ) Don't forget to clean the battery cable ends real good ( looks like new money ( I use a powered wire brush on a die grinder) ( get-r-done)
Posted on Sep 17, 2010
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Posted on Jan 02, 2017
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