20 Most Recent 1985 GMC Suburban Questions & Answers

Behind the glove box

you can try flushing it using Seafome and replace your filter and fluid adding some trans tune with the new oil can git this things from most part stores . Hope this helps.

you need to take the seat cover off i had that happen to me in my van and all i had to do was replace the broken bolt give this website a try you should be able to find one at a good salvage yard www.junkyarddog.com also give these websites a try for help www.alldatadiy.com and www.autozone.comalso like to give you this information if you every have any hard to find GM-parts its Schram auto & truck parts 1-800-292-1032 and they website is www.schramauto.com wish you the best of luck Michigan Man.

Check the linkages and the rod for the neutral safety switch under the column and the linkage under the vehicle where they go to and from the transmission.Hope this helps.Good luck.

First disconnect the heater hoses. Have a pan to catch the coolant when you do.The fasteners for the heater box are in the engine compartment on the fire wall. Undo the nuts there, according to my picture there should be at least 3 or maybe 4. Then remove the glove box and door and disconnect the door cables on the box. Take the floor outlet and the defrost outlet off, they each have screws holdong them on. There will be 3 or 4 more screws holding the box on the inside of the cab, these come off now. Pull the heater box back easily until you can unplug the wire harness and then remove the box. then you can replace the core and put it back in the reverse order. Hope this helps.

This was the procces on an 86 chev 1/2 ton. Should be the same. Remove glove box. Undo manual controls for duct work. you'll see them there behind where the glove box was on top of the heater core housing. Bemove screws/bolts. Don't remember how many there are. Undo hose clamps in the engine compartment. Remove heater core.

I use a 15W40 for diesel engines year round in my 1982 6.2 and in my 1994 International without any problems. Hope this helps.

Try replacing the fuel filter first and checking the fuse and relay to the fuel pump. You can get that information for Auto Zone where you can pick up the fuel filter too. Good luck and hope this helps. keep me posted, be glad to answer any questions you may have. 

Sounds like you have a handle on it dont start it til you get that old diesel out of the tank, I would definitly change the oil. The only thing about it sitting that long is the seal deterioating rust I would run it with some lucas oil stabilizer

I've got a 1993, it's located in the right rear quadrant of the engine compartment, next to the firewall about half way down.

The fuel filter is in the carburetor in your suburban. Just follow the fuel line to the carburetor and the filter will be in the carburetor. Good luck and keep me posted. Be glad to help. You can pick up the filter from Auto Zone and they will have the step by step instructions to replacing the the fuel filter and also a good thing to buy a fuel line wrench so you don't strip the nut holding the fuel line to the carburetor. 

No I have not at this time. There are not very many line on the '99 Blazer. I thought I would go to a Walmart parking lot & see if I could find a car like it & compare when they came out. Also my wife's father has just retired from an auto dealership & he was going to see if he could get a photocopy of the vacuum diagram for me. If he does, I could scan it & e-mail it to you.

ESC module is for electronic spark control and is located on engine block near ignition coil . it's to control spark advance for timing. hope it helps

I have no brake an leaking something

If you're finding it difficult to service or repair your car, get one of those online manuals. You will not have to wait for others to answer, or rely on mechanics and all. www.reliable-store.com

When was the last time you had your fuel filter changed? Have your catalytic converter tested.

check your vacuum supply maybe the problem out under hood