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To normally install a block heater you must remove an expanstion/ freeze plug in tighten in the block heater. The 6 cylinder 4.2L engine unfortunately does not appear to have any such plugs. The V8 engine should have a screw in style block heater installed in the left front of the engine block just below the cylinder head.
What else can I help you with?
How do you install an engine block heater 2006 Chevy trail blazer V6-4.2L?
Drain coolant from radiator and engine block Remove passenger's side rear freeze plug and replace with block heater kit
How do you change the tire on 2003 Chevy trail blazer?
how can we drop reserve tire on Chevy trail blazer
How long does it take to install a starter on a Chevy trail blazer?
About 30 minutes to remove the old one and install a new one.
When should you change the timing belt on a 2000 Chevy trail blazer?
The 2000 Chevy Trail Blazer doesn't have a timing belt.
How do you reset check engine light for the 2009 Chevy trail blazer?
How do you reset check engine light for the 2009 Chevy trail blazer?
When do you change a timing belt in a 2003 Chevy trail blazer?
The 2003 Chevy Trailer Blazer doesn't have a timing belt.
Where is egr valve on 2004 Chevy trail blazer?
internal
Where is the fuel injector on 2003 Chevy trail blazer 4.2?
How do you change the reading light on the 2003 Chevy Trail Blazer?
No answer. Haha!!!
How much to replace the main fuse in a Chevy trail blazer?
$2
How do you replace air bag sensor Chevy Trail Blazer?
Its illegal you can't do that
Is there a recall on Chevy trail blazers fan clutch?
I have a 2002 Chevrolet trail blazer the slip clutch is out was there a recall on them?
