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block heater

block heater

Postby dinger5 [OP] » Dec 23 2013, 2:06am

anyone know how to test your block heater cord?? (yes its below -18 c,)as for what it should draw or how I know if it works? thanks..2009 gmc sierra.
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Re: block heater

Postby Gmrepairman » Dec 23 2013, 4:53am

A standard multimeter and just ohm out the cord to check for no opens. If it's working you will see current draw
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Re: block heater

Postby McBride » Jan 04 2014, 5:25am

my block heater isnt working so took the cord off and checked with ohm meter and 1 side is dead,do i need the temp sensor end to be below -18 to check it
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Re: block heater

Postby Thunder53 » Jan 04 2014, 6:19am

I recently moved back to Chevy after 14 years in Dodge diesels and I can tell you the Chevy block heater sucks. :cry:

The two Dodge diesels I had both had block heaters and when I plugged them in, they came on right now and the temp came up fast when I eventually started them in the morning.

I've tried the Chevy one, it's been below 0 most of the last week, -10 to -20F at night, and I can't even tell if it's working, even after being on all night, everything is ice cold in the morning.

I like the truck, they all have good points & bad points, but there are a few things to be desired and this is one of them.
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Re: block heater

Postby McBride » Jan 04 2014, 4:37pm

the chevy one dont start unless its -18 or colder
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Re: block heater

Postby dinger5 [OP] » Jan 04 2014, 5:52pm

thanks guys, as it turns out cord ok, block heater replaced...
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Re: block heater

Postby Thunder53 » Jan 04 2014, 7:33pm

McBride wrote:the chevy one dont start unless its -18 or colder



It's supposed to work at 0 degree F or -18 C. (which is ridiculous anyway, it should work when you plug it in, period)

Going to be -25 F tonight and tomorrow, guess I'll find out for sure if it works.

I'll be having a dealer check it soon. (and potentially replace with a "on right now" aftermarket, any suggestions??)
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