Last post on Oct 17, 2006 at 8:12 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
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Chevrolet S-10, GMC Sonoma, GMC S-15, Truck
#314 of 2018 Groaning Noise -- Front wheel area
Jun 22, 2003 (11:51 am)
Hi, I was wondering if anyone has an idea what this problem might be. I have a 2003 6 cyl 4.2L? auto tran, extended cab Sonoma GMC 2800 miles. When I pull into my driveway (tight right turn) at slow speeds/(kind of rolling in using the brake) it makes a metal groaning noise. I took it to the dealer but he couldn't recreate the noise. A friend of mine "zerked" (greased) the front end, but the noise is still occurring. I was hoping someone might have experienced this problem and found a solution. I posted here because there doesn't seem to be many GMC Sonoma postings compared to S10 Chevrolet postings. Thanks
#315 of 2018 larryb12: Here's some simplier solutions to try first....
Jun 24, 2003 (5:21 am)
You brother's S-10 with 150K is possibly suffering from a dirty injector, clogged fuel filter, tired fuel pump and/or a dirty throttle body. These fixes are easier and much cheaper than a new computer, so I would recommend you try them first. Here goes....
First, if he can't remember when he last changed that fuel filter, do that TODAY. Fuel injected cars need much higher pressures than older engines with carburetors. A clogged filter can really reduce the pressure, and put a lot of extra load on the pump, causing it to wear out.
Next, add a quality concentrated additive to the gas tank. Ignore the hype, cute bottles and megabuck advertising you see on TV or in parts stores. There is an additive called BG 44K that many new car dealerships use on their customer's cars. It is not readily available at places like AutoZone or Pep Boys, but you can get it online. If you can't find it in your area, go to www.cambridgeauto.com or www.bgfindashop.com to order it. Yes, it is expensive (about $20 per bottle) but this is the real deal, not a late night TV miracle-in-a-can snake oil cure. BG 44K cleans the injectors as well as much of the carbon buildup on the back side of the intake valves. You will actually feel a huge improvement in 50-100 miles.
Next, you need to clean that throttle body. Get a can of Berryman's B12 carb and choke cleaner at the parts store. Remove the snorkle and air hose, and with the engine running, spray this stuff all over the inside of the throttle body and plate. Keep the engine running by opening the throttle as you spray it in. Then, with the engine off, open the throttle all the way, and clean both sides of the throttle plate and all around the inside of the throttle body. Let the truck sit about 15-30 minutes, and then restart it and let it run a few minutes. It will be very hard to start at first because you have just dumped a ton of this stuff in the engine, but it does work.
If he is still not happy with the performance, have the fuel pump pressure checked. I'm not sure what the idle pressure should be on that engine, but I would guess it should be in the range of 35PSI at idle. Also, make sure it keeps pressure once the engine is turned off. If the pressure is low, he may need a new pump. If the pressure drops immediately after you shut the engine off, the fuel pressure regulator is likely bad.
Another suggestion is to use a good engine flush at the next oil change after you do all of these things. There is probably a lot of unburned gas getting dumped in the crankcase, diluting the oil and adding a lot of sludge. When he changes the oil, add a can of Restore to the oil. It's great for high mileage engines.
#317 of 2018 Engine hesitates
Jul 05, 2003 (1:00 am)
I have a 1998 S-10 with the 2.2 4cyl, and 46000 miles. Every once and a while when I am driving I will go to accelerate and the motor bogs down, it usually recovers in a few seconds. It happens when its cold, hot, anytime you name it. I can be cruising at 70mph and it will do it. Any suggestions.
Jul 05, 2003 (6:48 am)
You may want to see your dealership. I had some problems with my wipers on my 97 sonoma. Sometimes they work, the intermittent feature doesn't work (Intervals weren't consistent), or they just don't work period. I recently got a recall notice to replace the wiper controller board, not the motor. Wipers work now. Don't know how long the board will last though.
Jul 05, 2003 (2:43 pm)
How to repair GM intermittent wipers,before starting pull the wiper fuse or disconnect the battery.Disconnect the electrical plug from the motor,remove the screws holding module to the motor assembly.Remove the module from the motor assy,you may have to pry it loose with a flat blade screwdriver where it plugs into the motor.Now where the plug attaches to the circuit board there are 5 soldered pins,if you look with a magnifying glass you will see the cracked solder,I resolder all five pins.Use a large enough solder gun to get a good melt,I also add some fresh solder with some electrical flux.Reverse assy.
#320 of 2018 Fan Clutch Noise
Aug 04, 2003 (8:04 pm)
I have a 2002 ZR2 4x4 with a 4.3 motor. The fan clutch is making a lot of noise when the motor is hot, it sounds like a jet engine taking off. The dealer says this is NORMAL! Is anyone else having the same problem? Anyone have any ideas?
Aug 05, 2003 (8:36 am)
i have a 99 2.2 and it rarely comes on and it does roar.Is it hot where you are,it dosen't get too hot in Maine.
Aug 05, 2003 (1:12 pm)
I live in Alabama and it gets hot and humid. I think it's too much noise, it sounds like the RPMs are going wild. But the dealer says it's normal, i'm hoping someone else is having the same problem.
#323 of 2018 Paint Problems...
Aug 06, 2003 (4:42 am)
I have a 1997 S-10 4x4. I realize that some of the lower area of the truck are going to get "sandblasted" by road debris. It doesn't make me happy, but I know that it will eventually happen.
What concerns me, however, is that I'm seeing paint just flaking off in obscure area that don't see direct contact with debris. Like the lower edge of the tailgate, the front side of the box, betwen the cab and box.
Anyone else seeing this on their trucks?