GMC Electrical Supplies - Popular Questions, Answers, Tips & Manuals

Take a look at their web site. It also has a customer service contact number. Unofficial Allis Home Page

GMC 1971 Cargo... | 102 views | 0 helpful votes

Open the expansion filler cap when engine cold, set temperature for heating to hot! Start engine and let the car run until operating temperature reached and watch water in expansion bottle for air bubbles being expelled!

GMC bracket.... | 55 views | 0 helpful votes

These are hydraulic valves and should not need adjustment??

GMC bolt. engine... | 28 views | 0 helpful votes

Get the part from a dealer instead of an auto parts store. That way you won't need to jury rig the connectors. Follow the wire to the end and disconnect the bolt that connects it. On the smaller diameter wire, do the same.

GMC cable.... | 27 views | 0 helpful votes

Should have hydraulic lifters but the rockers wear on them,check for wear.

GMC bolt. engine... | 53 views | 0 helpful votes

Is the screw turning into a nut? If so, is the nut turning while you're tightening the screw? If so, hold the nut with a wrench. If there is no receiving nut, then most likely the screw thread in the terminal is stripped. If so, you'll need to replace the negative cable. Your local auto parts store should carry a replacement, and most stores will advise you on how to change it.

GMC cable.... | 34 views | 0 helpful votes

some newer cars require a special anti freeze that protect the rad and engine because of the material = metal that they are made from like aluminum and last a lot longer than the regular green anti freeze for protection

GMC stud. bolt.... | 53 views | 0 helpful votes

Could be a number of things including a simple stuck e-brake or something more serious such as a transmission or differential issue. Whith these newer vehicles, often time it is an electronic issue. Your will need to have it towed to your local repair shop for proper diagnosis.

GMC 2008 Acadia... | 25 views | 0 helpful votes

Check the thermostat, they will stick closed and cause overheating. or replace the switch for the fans.

GMC bolt. engine... | 57 views | 1 helpful votes

I would remove housing and lay it on sandpaper over a flat surface and lightly sand down. You will be able to see where housing is warped, if at all. If its warped too bad I would replace, if its not I would replace seal and thermostat. Use a little RTV silicone around both sides of gasket as well. This should eliminate your leak. Good luck!

I’m happy to assist further over the phone at

GMC bolt. engine... | 50 views | 0 helpful votes

First ask a question and then repost it to cars and trucks so someone can get you an answer that will help you.

GMC bolt. engine... | 59 views | 0 helpful votes

dang lotsa info here

Electrical... | 23 views | 0 helpful votes

No it's AVR issue. Check the field coil connections first. See if the coil's connections are not broken. if that's okay then check the voltage on AVR input terminals.

Electrical... | 42 views | 0 helpful votes

well isnt that informative

Electrical... | 24 views | 0 helpful votes

Please be kind to us all and explain what engine you’re referring to.

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Electrical... | 27 views | 0 helpful votes

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