GMC K1500 - Recent Questions, Troubleshooting & Support

Interference may be caused by non - resistor spark plugs. If you don't want to change your plugs for resistor plugs, you may be able to get an inline resistor for the antennae from your local electronics supply store, like radio shack. Failing that, you can buy a cb antennae with a built in resistor coil that will also do the job. If you buy the new antennae, go to a cb shop to have your antennae tuned to your cb - it will increase your range and clean up your sound too.
Hope this helps, and please rate my solution!!

I would look for harness damage under the bed since the brake and tails are seperate circuits.

fuel pump died replaced it truck ran poorly afterwards. Had a prussuer test done pump determend pump was no good. Put in another ran good for 2 days started running poorly hard to start no power. 2nd fuel pump. So i figure another bad new fuel pump wow changed it put in a third brand new fuel pump. Still will not eve start now. I had it tuned up 2 months ago new plugs rotor, cap, etc. put in a new fuel filter made sure it is on proper checked all connections for leaks. this cannot be a fuel pump problem now. no problem with the elctrical i figure i have great spark on ignition tester. I can hear the fuel pump prime when i turn the key. but when i went and checked the fuel port i had no pressure. When it is being cranked gas sews out of the test port. Also i dont if this is comon cause i used to turn my keyand go. but when i have someone turn the key and i listen at the gas tank whn the key is shut off i hear gs spraying back into the gas tank. So i am open for opinions.

Someone please call me 3365179318 I have a 1992 gmc topkick 366 engine and I noticed when I turn the key the fuel pump is not coming on. So I’m trying to find the fuse or relay for it to see if it’s maybe bad because the fuel pump ain’t even a year old. Someone please help me lol

possiable brake booster. if you hear a hissing sound and truck runs rough if not possiable master cylinder.

the wires come out above the brake pedal assembly. the keyless entry module mounts here also you have to remove the pedal assembly to get to this area.

the key switch or the actual switch ? do you mean the key? for the key u must dismantle the column. for the switch u must lower the column by removing the two bolts holding the column up and the switch is lower on the column next to the high beam switchwitch is held on by two 8mm bolts and two plugs

first u must put the engine to the top dead center by lining up the marks on the front pully of the crankshaft also make sure the marks are on the intake stroke and not the exhaust stroke by taking out the number one spark plug and putting a small piece of rag in the hole . not all the way in leave some hanging out. now rotate the crank by 5/8 socket and breaker bar clockwise until you hear a pop as the number one piston blows out the rag from the plug hole signaling that the piston is on the intake stroke .check marks on the pully for exact timing .next get the distributor and drop in the hole making sure to point the rotor to the direction of the number one piston also making sure to seat the distributor all the way down leaving the keeper loose to align rotor to the number one spark plug wire on the cap . install wires to spark plugs .next have someone crank the engine while you are turning the distributor slightly til you hear the motor start this might take a few times to get correctand a timing light will be needed for final adjustment.

first check bulbs under the bumper twist and pull out the wires leading to the light if bulb is kinda silver and black inside the bulb is blown if the parking lights work its most likly the bulb

replace master cylinder

check fuel pressure and if good clean mass air flow sensor also check spark plug gap

i assume you mean the starter solenoid its on the starter on the passenger side under exaust manifold

check shift linkage

possiable coil or fuel filter and or fuel pump

top of intake must be removed and fuel pressure regulator is on fuel injection spiderremove small clip and pull out regulator then o ring and then fuel screen replacement is oppsite of removal

hope it helps.

Remove the distributor cap while cranking, see if the rotor turn. If not then the distributor gear is worn (need to replace the gear). The ignition module could defect. Need to check the ignition module for power and ground and a bypass signal at the module. Hope it helps.

Hope it helps.

If the PCM receives a signal that the coolant sensor is cold then the idle will be high. IAC valve could be stuck open and not retracting. Check signal at 4 wires(open circuit). If ok change the IAC valve. Warning; don't try to retract the pintle by hand. Hope it helps.

Check at injector wire with a test anoid light blinking while cranking engine if there is a signal to the injectors. The + signal is from a FUSE. and the - signal is from the ECM. If it's an ECM problem, before changing it. Check all positive and ground at ECM pinout check. Hope it helps.