20 Most Recent 1999 GMC Sonoma - Page 8 Questions & Answers

You don't need any control arm bushings to replace your ball joints. They bolt to the end of the control arm and to the hub assembly. Generally just 4 bolts to remove them.

If the heater works in other positions than i dont know if I can help you. When you turn on the heater it opens a valve from the hot water in the radiator and diverts it to a small heater under the dash. If you do this in very cold weather you may be dumping a cache of cold water in the tube into the engine chilling the motor if it was recently started. if it has been running and heats fine, then you have either a straight electrical or electrical/mechanical flaw. the cable opening the duct to the floor could be pulling on some wire and causing it to misoperate. Follow the cable to the vent and see if there is anything in the way. and yes you will have to stand on your head with your feet on the head rest to track it down.

check the egr and also the throttle body
have you check the codes on the check engine light if so what are the codes?
what kind gas are you putting in the car

I honestly am not certain what the cause of this may be. But what might help would be turning the idle up a little bit so that the throttle is opened more. Also the spark plugs might not be gapped correctly witch is normal for older spark plugs. I hope this information helps you out. I am sorry if it does not. Merry Christmas! :)

fuse panel or under hood in fuse assemble that is clearly marked in black plastic box.

Your probably done by now but just take fuel line off at pressure regulator at back left of engine and use a removal tool to take line off at the left front of engine down near alternator and lift together. Much easier than taking intake off.

if it is a 2.2 engine it will be a hard job and mark the wires tape and a marker. Easy to cross them up.

I would be looking at the valves take a compression check and compare it to the other cylinders.

2.2 engine as your standing in front of the engine is all the way back against the fire wall on the left side under a steel plate that has 3 bolts holding it on. The one on the back of the head you can loosen and not take out. Is there any fuel in the vacuum line going to the regulator? Will the vacuum line hold vacuum? If your answer is no and yes your regulator is ok.

If you are trying to fix a P0303 fault code, it is not necessarilly a spark plug problem. Yes, it COULD be a burned valve or broken valve spring. However, it could also be a blown head gasket or a bad fuel injector. The problem needs to be properly diagnosed to determine the actual cause.

Hi.Check idle air control system. The system comprises a valve that allow extra air into the engine when the engine is idle. If the valve is stuck, if there is a problem with IAC wiring or solenoid or if the vacuum hose connected to the IAC has a leak you get engine running rough and turning off when idle.Check air intake and sensor (MAF and AIT). Replace air filter. Air intake problems may result in rich mixture and in engine turning off.Check EGR and PCV valves. These parts may cause rough idle. When the problem is EGR or PCV you usually get troubles also when driving.

Possible that the FUSE has blown but if the park lamps are working then the fault can be within the dash circuit. This can be a connector issue, it can be also related to POOR /IMPROPER GROUNDING of the dash circuit.Use a multimeter or a test lamp -12 volt dash bulb- to trace the circuit with one side grounded.