Question about Cars & Trucks
And you feel the indications are not correct? If so you need to remove the cluster from the truck and have it rebuilt. Google "GM cluster repairs" and lots of places will come up, take your choice by cost and speed of repair.
Posted on Nov 08, 2012
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Posted on Jan 02, 2017
There may be no loss of voltage, but is there a surge of voltage?
As for the battery itself when tested, it should read 12-12.5Volts across the
leads when the car is off. When the car is running, the battery should be reading 13-14Volts across the leads, anything lower means the alternator is not charging your battery, anything higher means the alternator is over charging and damaging your battery.
Another cause for the battery light could be your ECU has detected an error
Posted on Aug 20, 2009
Testimonial: "thanks, haven't seen a alternator discharge light go on and off, normally it's either worked or didn't"
SOURCE: Will not charge
you will get some funny answers from some of these "experts " The symptoms suggest to me with out much doubt that the regulator is not doing its job correctly ,consistently.Iwould take it to an AUTO ELECTRICIAN and get it tested in situ.... there is only 4 things it can be , wireing ---battery---alternator-----regulator and of those the reg. is the only one that chops and changes. it will cost little for a sparky to check the reg ,. AND I WOULD LIKE TO KNOW THE OUTCOME
Posted on Oct 22, 2009
The fact that the engine dies without warning and that the effect is intermittent indicates that the problem is electrical and that it is most likely a break of some kind. Start from the top and look at the main fuse and the main relay and then the fuel pump relay (sometimes the two are on the same board in the same relay unit). Really inspect these thoroughly and check the solder joints, sometimes you can get an annular crack running around a pin and it will not break the circuit until vibration or high temperature causes the crack to open briefly. When you switch the car on these relays should give a healthy click. Most electrical problems can be found with a wiggle or a tap; wiggle the wires, that is, and tap the device they connect to. A short in the MAF (air density unit) should not necessarily cause the engine to die but maybe to change its idling characteristics. Unplug it whilst the engine is running to see its effect, in fact most devices may be unplugged to check their effect without doing any long term harm. Remove any foam that could interfere with its operation. Spray clean it with electrical spray cleaner (zero residue spray) but do not touch! Do not use carb. cleaner spray as it is too aggressive. 1) Check all the electrical things the ECU takes signals from in order to run the engine: throttle position sensor, idle speed control, Intake air temperature, manifold absolute pressure, engine temperature sensor. crank position sensor, cam position sensor 2) Check electrics, coil (bad to diagnose if intermittent) low tension, high tension distribution, plug leads and plugs, hall effect sensor. 3) Check air: check that all vacuum pipes making any kind of connection with the inlet manifold are air tight with no cracks or loose joints. If you have evaporation emission control make sure that the purge and vent valves close and open when they should. If you have Exhaust gas recirculation check that the valve opens and closes and that all feed ports to it are free and clear of carbon build up. 4) Now check fuel system: pre-pump, main pump, fuel filter, fuel pressure regulator, injectors
Posted on Jun 29, 2010
Testimonial: "Most of what you wrote has been done I assumed it also to be electrical fuel pump relay new and checked again and my technician has checked the various other electrical items he also tells me that nex time if it happens again i should unplug the MAF (air density unit) to see waht happens. On the other hand he has tesed the device and is passed the test without problems but it is good to know that a short circuit in teh MAF cannot cause symptomes i have other suggestions are welcome jeroen"
SOURCE: ... Problem I discovered the
the dash panel has a printed circuit board incorperating the led lights,you will need to replace it.....if you havnt tried turning up the rheostat next to the headlight leveler control please do so..
Posted on Sep 04, 2010
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