20 Most Recent 1986 GMC Caballero Questions & Answers

well you will have to go to the dealer.

1986 GMC... | Answered on Aug 19, 2017

dissconect battery call dealer for password

1986 GMC... | Answered on Dec 04, 2010

nice choice of rod, but the v 6, junk , need to run untill 454,350, 396 arrive? cool, ok. only need dist vac to accelerater vac port pass side of carb,manifold vac port to brake boost lose rest.cap off.<check timing> racing trick, vac guage max vac back off 2 lbs of vac perfect timing for race. set wreckers up that way for clean burn and better milage. [email protected] or classic roadside services .com e-mail rick v-6 231 229 vega/monza

1986 GMC... | Answered on May 18, 2008

Hi and welcome to FixYa!

Rearding the electrical in and outs of the car I strongly suggest that you get a copy of Haynes Manual on any auto parts store or bookstore. This will guide you fully not even on electrical but the in and outs of the car for only atleast $16. Not bad for an investment specially if this car is for keeps.

Hope this helps and thank you for using FixYa! Have a good one!

GMC Caballero... | Answered on Aug 19, 2017

On a lot of chevy you need to axess the plugs from inside the wheel wells . The plugs are on the side of the block look for the wires that will lead you to the plugs . But you likely need to remove the front tires to be able to get the angel to get a socket wrench on the plugs to remove them . 4.3 engine if this what you have you need to do this but many other chevy engines are the same Good luck just look at it

GMC Caballero... | Answered on Aug 19, 2017

You can get one of those hand pump sifen hose or the other option is to drop the tranny pan.

GMC Caballero... | Answered on Aug 19, 2017

Sorry there is no free repair manual on the net for the Caballero. But I did find this one on the net it is the cheapest on out there.


Good Luck

GMC Caballero... | Answered on Aug 19, 2017

the 4.3 is .035,
the 5.0 is .045

GMC Caballero... | Answered on Apr 30, 2011

hello howard. There is a fuse panel to the left of the steering column behind a removable panel. Begin by checking and changing the fuse to the heater. The other posssible problem is the heater relay which is a plug in located under the dash, to the right of the steering column. IF the relay is bad the fan will not come on. IF you check and/or change each of these items and your heater still doesn't work then you probably will have to go to a repair shop. Joe

thanks for choosing fixya!

GMC Caballero... | Answered on Dec 03, 2010

Hi!!The only places where you can get the roof cloth is the dealer and an Upholstery Shop/Store. If your roof cloth is only loose and not ripped, you can remove the trim around the roof of the car or if it is only a small part that is coming loose and apply fabric spray adhesive in between the roof and the cloth to make it stick together. It usually works pretty good if the roof padding is not too dry that disintegrates when you touch it. If that's the case, you need to install new roof padding found at the upholstery shop/store.
Good luck!!

GMC Caballero... | Answered on Oct 29, 2010

what year? what engine? what model? Usually on gm vehicles with distributors that are electronic (after points) there is a ring / cap on the top surrounding the coil with this info embossed onto it.

Firing order of a v8 chevy prior to Generation III engines is 1,8,4,3,6,5,7,2.

Hope this helps.

GMC Caballero... | Answered on Oct 03, 2010

code 44 set on pre 1995 gm vehicles is a o2 sensor reading lean or bias to .2 volts or less. it could be the o2 sensor, it could be a vacuum leak making the exhaust have too much oxygen thus making the o2 sensor to read lean or put out a lean reading. If the o2 sensor is old 75k-100k it's probably time for a new one anyway. an exhaust leak near (upstream) to the o2 sensor can pull in air even though the exhaust is leaking out and fool the o2 sensor with the added oxygen also. you could also have a fuel delivery problem creating a true lean condition. there are ways a tech can test an o2 sensor to see if it's the sensor or a mechanical problem causing the code.

GMC Caballero... | Answered on Sep 29, 2010

Hi. This is a hard one it depends on where it broke,can you cut the housing to get to cable core and pull with pleirs, if it snapped at latch then you will need to remove the grill or go from the bottom and try to hit the release the same wat the cable did,sometime if you grab the cable near the latch and pull hard it will open, good luck.

GMC Caballero... | Answered on Sep 15, 2010

Double check to make sure the plug wires are on tight and in the right order. Fire it up after dark and look for arcing at the wires. They may need to be replaced.
I never was satisfied with the way other plugs worked in my GM's. I stuck with AC/Delco plugs and always had good service and performance. I even put them in a 409 that idled at 1500RPM. They would take everything it would ask for. Just a personal prefence but They always worked for me. Hope this helps.

GMC Caballero... | Answered on Mar 14, 2010

You can download a repair manual here (8.51 MB):- http://vectra-c.swi.hu/VectraManual.pdf Hope this helps.

GMC Caballero... | Answered on Jul 25, 2009

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