20 Most Recent
2003 Chevrolet Suburban - Page 5 Questions & Answers
P0300
Do you hear the fuel pump come on if you havesomeone by the tank & cycle the key on/eng off ?Have you checked for fuel pressure with a gaugeon the engine port?PO 300 is random misfiresThat is of little value until it startsHow old is the batteryIt can turn over the engine,then dropto 12 volts & not allow the computerto do it's job.loss of module voltage.Your best to have a shop use a scan tool& their experience to see what is missing.
Radio sound went out
Does your stereo have a manual volume adjustment knob? If so, then try twiddling it quickly from side to side. If this helps, then it could be a poor volume control issue. Try having this professionally cleaned or repaired. If not this issue, then also try removing the stereo and checking the wire connections on the back of it to the speakers. I'm assuming that all the speakers are failing to project sound when the fault occurs, so we are talking power issue here. The fault is most likely part of the stereo head unit.
Will not go into 4th gear or uphill
Hi Msch, As your vehicle is a relatively late model I think it would be fitted with electronic transmission control modules. As you have lost power to the speedo and other circuits, you may have a problem with the speed and ABS sensors. The signals from those send command signals to the management system and control both vehicle speed and gear changes. Take the vehicle and have a diagnostic scan carried out. I believe the problem to be electronic and nothing to do with how much ATF is in the box. I do believe the electrical problems are related. Regards John
Reduce power engine
Whenever
this warning light or any other stays on in the dash it is indicating
that the systems control module (or the system sensor in the case of
lights like low oil pressure, door open indicators etc.) has detected
a fault, it then disables the system (this applies to ABS,TCS, TCM,
SRS and BCM faults) as long as the light is on. You must now have the
dealer hook up a special electronic diagnostic tool and "scan"
the system for the fault code that is stored for the problem(s)
Legend
of Abbreviations. ABS Antilock brake system.TCS Traction control
system, TCM Transmission control module, SRS Supplemental restraint
system, BCM Body control module
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