20 Most Recent 1999 GMC Sierra 3500 - Page 5 Questions & Answers

A Specific Order to what? We need more information to assist you.

its listed as a 6.6L LLY 402ci V8......i hope this helps

You are going to find the pump needs rebuilt

BE MORE PACIFIC SO I CAN HELP YOU

Unless someone wired them to do that, which I doubt, I would check to make sure you pulled the proper fuse. That will kill the lights period. Let me know if this helps.

Speed sonsor on the tranny is bad.

Horn and dome light don't work on a 2001 GMC2500 4x4

There is normally a hole in the rear bumper to put the jack handle-tool and unscrew the spare down.

Send us the model and year to send specific details.

Year? model? what are you trying to fix?

you should have a unused circuit in the fuse box, or an accesory not being used, depending what you are powering in the trailer i would suggest a 20 amp, but you can go to 30 amp (not recommended)

Check in driver side, bottom of radiator, to drain, remove radiator drain plug located on p.s. lower corner.

Hope helps.

I supose that you are getting a spark at the spark plugs when the engine is cold or no.???
Have you checked the distributor cap and spark wires?
Finally do you mean to say that you have changed the ignition module ? that's that black/grey rectangular like unit that held down by two screws.

have your starter tested at your local auto parts store to see if it's drawing to much current

This is a fuel system related problem.

Check the fuel pump and the nozzles including the spark plugs.

This should do the trick.

Good luck and rate this.

First buy the alldata subscription for your unit and read the engine power management system, once you understand this then you will see you don't need a scanner, you can code out if it's a engine problem then read the codes itself with a paper clip. Then once you get the codes post them here to get a better answer, the more information you can provide the better the answer you will get. A digital test meter will be better than a scanner. Without understanding the engine management system you won't be able to fix it without replacing a lot of parts.