07 Suburban 5.3 wont start when temps get under freezing.

Asked by Daniel Jan 08, 2017 at 10:26 PM about the 2007 Chevrolet Suburban 1500 LT 4WD

Question type: Maintenance & Repair

07 Suburban 5.3 wont start when temps get under freezing. Once temps get
up above freezing it fires right up. Everything works such as lights, dash, door
locks, etc. Just wont turn over.

2 Answers
59,755

enginecreator answered 7 years ago

Have your battery & alternator load tested preferably when its cold. And check or replace battery terminal & terminal wires and the engine grounds from battery & engine block to frame for good clean connections without corrosion. Have starter tested and/or replaced.

Mark helpful
59,755

enginecreator answered 7 years ago

Also clean all electrical connections with contact cleaner (CRC) and use dielectric grease in connectors to remove moisture & keep it out.

Mark helpful

Your Answer:

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