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Chevy S10 - GMC S15 and Sonoma Engine and Underhood Issues

317 messages,  Last post on Sep 18, 2008 at 12:38 PM

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What is this discussion about? GMC S-15, GMC Sonoma, Chevrolet S-10, Truck

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#13 of 317 GMC Sonoma with Vortek 4600 by stevenf20 Jul 26, 2006 (8:29 pm)
I recently purchased a 1999 GMC with the Vortek 4600, heaby duty suspension and locking rear axle. The truck is rated for 16-21 MPG, but I am only getting 13.5 and I do not do city driving.   Is something wrong?? Replies to this message: jpf (Jul 31, 2006 1:47 am) stevenf20 (Jul 31, 2006 5:03 am) jpf (Aug 06, 2006 5:14 pm)
#14 of 317 Re: GMC Sonoma with Vortek 4600 [stevenf20] by jpf Jul 31, 2006 (1:47 am)
Replying to: stevenf20 (Jul 26, 2006 8:29 pm) I have a 2000 S10 with the V6. I generally get 19 to 22 mpg on the highway. If your vehicle is 4WD, then you'll get less. If it's 2WD, then I would change the fuel filter and put some gas treatment into the tank the next time you fill up. Good luck. Replies to this message: stevenf20 (Jul 31, 2006 5:03 am) jpf (Aug 06, 2006 5:14 pm)
#15 of 317 Re: GMC Sonoma with Vortek 4600 [jpf] by stevenf20 Jul 31, 2006 (5:03 am)
Replying to: jpf (Jul 31, 2006 1:47 am) Do you have the heavy duty rear end?   It is 4WD, but I would think that I should not get 6 MPG less beacuse of that. It is a small truck. Replies to this message: jpf (Aug 06, 2006 5:14 pm)
#16 of 317 Re: GMC Sonoma with Vortek 4600 [stevenf20] by jpf Aug 06, 2006 (5:14 pm)
Replying to: stevenf20 (Jul 31, 2006 5:03 am) My truck is a base model with the work truck package. I consistently get about 20 mpg on the highway. You should get better than 13.5 mpg. I suggest you check all the basic stuff first, like tire pressure. Good luck.
#17 of 317 1991 GMC JImmy 4x4 s-15 by gmcarfreak Aug 14, 2006 (9:15 pm)
i have a 1991 GMC Jimmy 4x4 s-15 with the 4.3L engine and it was used for plowing for about 11 years and now i inherited it and it has no get up and go... the truck runs good. i replaced the fluids and thermostat. ehxaust. and lower radiator hose. my dad (former owner) told me that the person who had it before him did some underhood work and might have put the wires on wrong and that that might be why it doesnt have much go. so im just wondering if there is anywehre i can go to see some wiring diagrams... like the distributor to the spark plugs. just so i can see if they are in the right locations. thanx
#18 of 317 2000 S10 2.2ltr 4 Cylinder Exhaust Manifold Cracked by tjanzen Aug 20, 2006 (8:51 pm)
Question: Can I replace my air injection exhaust manifold with a standard manifold (no air injection)?   My cracked manifold has air injection system ports. Unfortunately this manifold is rather rare and expensive ($276). I can get a standard manifold for $130 in town. The standard manifold doesn't have air injection system. Is the computer expecting this input to the exhaust? There's an oxygen sensor(s) downstream. The dealership thinks it's a CA emissions thing. Does the standard engine and the air injection engine use the same computer? Replies to this message: philscbx (Nov 13, 2007 1:25 am) jpf (Dec 02, 2007 7:13 pm)
#19 of 317 Re: 97 Sonoma Fuel Pump Problems? [donniem2] by 34theshow Aug 28, 2006 (4:19 pm)
Replying to: donniem2 (Jun 27, 2006 6:32 am) Donniem2, did you ever find the solution to your problem? I drive a 2001 GMC Sonoma, and it appears that I'm having the exact same problem. Please help if you can. Replies to this message: jrocko (Dec 28, 2006 12:43 pm)
#20 of 317 1998 S-10 pickup oil changes by jnoltie Sep 04, 2006 (2:36 pm)
I recently bought a used 1998 S-10 pickup (didnt come with owners manual), and just spent an hour looking for the oil filter so I can change the oil but can't find the freakin' thing. Where is it? It is a 2.2 L engine.   Also there's a nearly empty white plastic jug on the front right side, just behind the battery. What is supposed to go in there? My guess is coolant since its around where the coolant place was for my car, and I didnt see anything else around that held coolant. Replies to this message: xtmfanatic4 (Aug 17, 2007 2:35 am)
#21 of 317 1997 Vortec Plugs and Wires by orton Sep 29, 2006 (8:58 am)
#22 of 317 1997 Vortec Plugs and Wires by orton Sep 29, 2006 (8:58 am)
s the a easy way or method to getting to the wires and plug to change out? I seem to have a wire going bad on me. The shop changed the plugs after a service engine light can on, the wanted to change the wires, but I wasn't going to pay $200.00 for a set from them. The light went away and seemed to run fine for a couple days. Under a load the engine seems to knock a bit and a slight stall. So any ideas on how to get to the left side wire that you can't even see? lol Replies to this message: hoodlatch (Oct 23, 2006 5:31 pm) the_big_al (Oct 25, 2006 5:52 pm)

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