20 Most Recent 2007 Buick Rendezvous - Page 8 Questions & Answers

One of the most common issues with this concern on this year and model vehicle here is water corrosion in the wiring connectors under the vehicle on the drivers side. If you look under the drivers side of the vehicle just below the rear of the drivers seat area you should see wiring connectors that plug into the floor under the vehicle. If when you disconnect these there is corrosion build up or water then the connectors and or terminals need replaced to correct this concern.This will involve pulling the carpet up in the rear seat area behind the drivers seat to access the opposite end of these connectors.you can clean the connectors with pure white vinegar .let the wire plug sit in it for a wile. then wash off and clean with an old tooth brush. then using some sealant smear it round the rubber seal with your finger. put the wires back in and on the ends were the wires are on the plug put some sealant on them to. this should help it not take on water again for a long wile. this can be a good fix if the connections are still good. if not replace then do this when it is back on the vehicle.

it is a 4 to 5 hours job
it is located under your dash in rear of center console

Change oxygen sensor, and check for leaks.

see my response to your previous post

Sounds like you have another hydraulic leak, check all your limes again and calipers and rear wheel cylinders

Thermostat, located in the radiator hose that fastens on top of engine to the intake manifold.

the obd port is directly connected to the computers on your car.if its not working you will have to check powers and grounds at the port and computer.you could have a bad connection or wire.if all the fuses are good in all the fuse panels then its possible that a wire was damaged during the head work.if so then take it back to who did the job and tell them the problem and ask them to check the wires that were moved during the job just in case.do NOT do this in an acusing way or they will refuse.

The engine light is telling you that a sensor is failing and affecting the engine performance. This sensor is being affected by the water coming in through the radiator or up from the front wheels . un fault codes to find sensor. Check all wiring connections to coil/s-injectors- distributor cap and plug wires as it appears that water is getting into the electrical system and shorting out the ignition.

sounds like low or dead battery!

ckeck ground cable clean conections at battery and replace battery terminals

your security system is over riding because of low battery, but charge battery full then try to set key

you have to find out the short-circuit. or like electrical motor draw to much current