The following cut in and out at the same time, the Abs,the WHOLE gauge cluster, day time lights, the heater control unit, reverse lights, and then when it cuts out the heater blower alone cuts IN even tho the heater control unit is off.
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The abs light bulb has burned out (just like a regular light bulb). These bulbs can be replaced easily, you just remove the upper portion of the dashboard by removing the retaining screws and then you will see the gauge cluster underneath. The gauge cluster will unclip and unplug and then you can replace the bulbs which are burned out. It is very common for older cars to have dash bulbs burn out.
Does it light up ? When you turn the key on do the warning lights come on ? Check engine , oil , abs , air bag etc... just gauges not working ? Does the vehicle start an run ? With vehicle running is check engine light on ? GM had a problem with the stepper motors that control the gauges . How to repair GM Instrument Cluster Speedometer Gauge Stepper
Depending on the year there isn't any . All done by computer on serial data bus communication network. The coolant temp. is supplied to the engine computer By a ETC - engine coolant temp sensor . All the modules on the vehicle ( ABS , air bags , BCM , instrument cluster , RKE module etc... ) Share info on this data bus network . If the gauge isn't working probably bad ,If a communication network problem the gauge will default to fixed temp degree . This is for a 1999 Buick , out of factory service repair manual . But all vehicles are pretty much the same .
Engine Coolant Temperature Gauge
The Powertrain Control Module (PCM) via the class II serial data line to the instrument cluster, broadcasts the coolant temperature. The instrument cluster compares the temperature data using a 16 point look-up table in order to determine the needle deflection. A smooth filter is used in order to secure a continuous response. The instrument cluster drives the temperature gauge to C (cold) under the following conditions:
• The temperature data is lost.
• The PCM is in a state of health fault.
Check engine light ,abs , air bag lights etc.... come on when key turned on ?
Fuse IPC/HVAC BATT 10 amp located in the left IP junction block . Do you know where this junction box is ?
Does the heater an A/C work ? If so the fuse isn't the problem .
The speedometer is a road indicator. The vehicle speed sensor (VSS) is a permanent magnet generator which is located on the transaxle. The VSS sends an input to the PCM whenever the transaxle differential carrier turns. The PCM then buffers the VSS signal. The PCM transmits the VSS signal to the following components at 4000 pulses/mile through CKT 817:
• The instrument cluster
• The cruise control module
• The radio (uplevel)
The instrument cluster uses the input in order to indicate the vehicle speed on the speedometer.
Instrument Cluster Indicators
The BCM controls the instrument cluster indicators through the SPI serial data communication bus. Refer to Body Control Module System Check in Body Control System.
Instrument Cluster and Body Control Module (BCM)
Instrument Cluster and Heater A/C Control Assembly
Is it just the instrument gauge cluster that is being affected? Is there any other thing (radio illumination, park or tail lamps, etc.) that is also going out at the same time? If the cluster is the only thing, I would look for loose electrical connections at the back of the cluster module.
Also, your Instrument Panel Cluster (IPC) is part of your onboard computer network. Fault codes in either the IPC or one of the other modules (PCM, ABS, Body Control, etc.) may lead you to the cause of the IPC malfunction.
FIrst, spin the brightness knob back and forth, if dirt or corrosion are causing the problem, this cleans the contact area. If that does not resolve it, check the fuses number 7 and 11 just under the dash on drivers side, it has a cover on it that comes off.
If the lights for system check do not come on when the key is turned to run without starting engine, check the fuses number 9 and 5 just under the dash on drivers side.
If this does not correct the issue, and the following- Radio glove box light, ashtray light, ABS light at startup with the other system check lights do work, the bulbs for dash illumination are probably burned out.
if the radio, ash tray and glove box light work and the other system check lights do not- the dash cluster may be seperated from the connector on the back side. or the ground wire for the cluster may not be making contact. The ground wire specific for the dash cluster lights is a black wire with orange trace stripe.
I had this same problem with my 2006 Ford Five Hundred. The instrument gauges would all fail and go to zero for a few seconds and then come back on as if nothing happened. During this issue, the reverse lights and "idiot lights" would also come on.
Everyone told me it was bad cluster gauges, so I replaced them and it was not the problem.
There were several cracked/broken wires leading from the main computer of the vehicle to the charging system. The delearship found the broken wires and it cost me $ 190.00 to have it fixed and the car now runs great, no more failure of the gauges.