Miramax coolant leak
10

Asked by GuruDM1FY Sep 23, 2017 at 08:19 PM about the 2004 GMC Sierra 2500HD 4 Dr SLT 4WD Crew Cab SB HD

Question type: Maintenance & Repair

I have a 2004 GMC Sierra Duramax. The injectors needed replaced so I took it in
to get them done. Ever since the injectors have been replaced the truck has
been leaking coolant. Oil looks good. Any ideas on what to look for ??

2 Answers
22,300

Guru9FSV8 answered 6 years ago

Around the 2 thermostats and hoses. They do drain the coolant during this job. Do you have a visible leak or is it using from reservoir

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10

GuruDM1FY answered 6 years ago

The low coolant light comes on after about 100 miles or so. When I look at the reservoir it shows low. When I open the reservoir pressure allows coolant to come back up into the resevoir, but I still need to add to bring it back to the full line. I took it back to the guy who worked on it and he said the injector cups were good.

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