How to install block heater on 97 chevy tahoe
The frost plugs that block heaters go in are along the sides of the engine block. About midway up from the bottom of block where the oil pan mates to the top block deck. 3 or 4 on each side, 1 to 2 inch diameter round metal plugs just slightly recessed in the block. Look below the exhaust manifold, behind the exhaust pipe on the block. Frost plugs are easy to punch out as long as you can get to them.
Punch in one side, and the other side will start to come out-then grab with pliers or vice grips to remove the plug.
When you buy a block heater for your Tahoe, it will come with an instruction sheet, and a diagram of the preferred or recommended frost plug hole to use the heater in. It will also usually show the positioning of the heater element in the block-how to orient the heater into the opening so the element does not touch the block anywhere, but is placed in so the element is exposed in the water jacket of the engine. That make sense? You do not need a sealer, as the block heater has its own O-ring rubber seal. When inserted and tightened down (small wrench or socket, about 3/8 inch or smaller size, do not over tighten-follow sheet instructions), the o-ring should not leak. Be sure and clean that recess well that frost plug was in- get all the rust and scale off with rags or emery cloth (sandpaper).
Not hard at all to install a block heater once the frost plug is removed. Getting access to the frost plug is the devil to deal with. If you are unsure, have it installed for you.
Jan 06, 2014 |
1997 Chevrolet Tahoe