337 points
Recent Activity

Question Asked: did GM really use Platinum plugs in this?
September 14, 2009, 08:18 PM
Just bought a 97 Bravada, was going to buy plugs, and the guy said that GM OEMmed and recommends Pt plugs to go in this W motor? I don't have a problem with that if true, but it just kind of struck me as odd, and want to make sure I am not being taken for an up-sell. Granted, all of the 4.3's I have had in the past were the older CPI setup and recommended 91 oct fuel. So I was also taken back by the manual stating 87 was ok in this engine.
Question Answered: Did the 91 cargo van come with a Vortec engine?
December 02, 2010, 02:37 PM
look at the engine digit in your VIN number. (off hand cannot remember if it is the 8th digit or the 10th, one will be the engine code, the other the year.) if you have a "W" code, you have the Vortec. The other code for that year (non-Vortec) in a 4.3L IIRC is a "Z"
Question Answered: how do I stop the fan from running when car is off?
December 02, 2010, 02:33 PM
common failure point on older GM vehicles causing battery draw, glove box light, underhood light, under trunk light. remove these bulbs to see if the draw stops. If you consistently have this draw problem, you will end up burning up your alternator. The alternator is designed to maintain charge on the battery, NOT to charge the battery from flat. If you do this often enough, the alternator will give up the ghost.
Question Answered: FAN BELT
December 02, 2010, 02:30 PM
does your vehicle have a single serpentine belt, or multiple v-belts? a serp belt system will have an automatic tensioner. If you have this with insufficient tension, the tensioner needs replaced. If you have v-belts, you must tighten the belt at the device designated for that particular belt. This could be your alternator, PS pump etc...
Question Answered: in dash brake warning light??
November 10, 2009, 10:58 AM
Is the lamp red or yellow? If red, there is a serious problem with your braking system. Could be caused by extremely worn pads, air trapped in brake line, or a brake system leak. Get the system checked by an experienced technician!
Question Answered: failed vent solenoid purge solenoid and airbag light
October 21, 2009, 12:37 PM
A failed vent and/or purge solenoid will not cause an air bag light to illuminate...
Question Answered: Problems
October 13, 2009, 09:17 AM
could it be the freeze plugs in the engine block?
Question Answered: I have two OBDII codes P1139 and P1258 what does these mean?
October 13, 2009, 09:14 AM
DTC p1139 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 2 DTC p1258 - engine coolant temperature is more than 131°C (268°F). When the engine is overheated, DTC P1258 will set. The PCM will disable two groups of four cylinders by turning OFF the fuel injectors. By switching between the two groups of cylinders, the PCM is able to reduce the temperature of the coolant.
Question Answered: AC Not Cold when van not moving
October 12, 2009, 03:30 PM
Sounds like there is not enough air going over the AC condenser. It is the radiator in front of the engine radiator. Is your fan shroud in good shape? Check the cooling fan clutch. Another option could be to add an external pusher cooling fan on the front of the condenser to help move some of the heat for you.
Question Answered: vacuum booster brake
October 12, 2009, 02:25 PM
There should be two bolts holding the master cylinder to the booster assy, and then there will usually be 4 bolts holding the booster in place. They might come from the inside of the firewall (in the cabin) on some vehicles.
Question Answered: Code says "running Lean"
October 12, 2009, 02:23 PM
If all of your vacuum lines are good and connected properly you are left down to two things. Either you have a bad gasket somewhere in the induction system (throttle plate, intake manifold gaskets, cracked manifold etc.) Or you have a weak, or failed fuel injector. Please post your code, and we can take it further
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