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Chevy S10/GMC S15-Sonoma: Problems & Solutions - READ ONLY

2018 messages,  Last post on Oct 17, 2006 at 9:12 PM

You are in the Chevrolet S-10 & GMC S15 Sonoma Forum. Your Host is kcram

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


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#1067 of 2018
Re: 1999 S10 problems after some time of running ... [canufixit] by joe3891
Sep 07, 2005 (9:42 am)

Replying to: canufixit (Sep 07, 2005 6:02 am)

This letter is intended to make you aware that some 1998 and 1999 model year GMC Sonoma truck, equipped with a 2.2L 4-cylinder engine, may experience illumination of the "Service Engine Soon" (SES) light, engine misfire, rough idle and hesitation. These conditions may be due to spark plug wire failure. The cause of this condition may be improperly seated and loose spark plug wire terminals.
Action:
To address the above mentioned condition, General Motors is providing owners with special warranty coverage. If this condition occurs on your 1998 or 1999 model GMC Sonoma truck within 7 years of the date your vehicle was originally placed in service or 70,000 miles (112,000 km), whichever occurs first, the condition will be repaired for you at no charge.
#1068 of 2018
Re: 2001 S-10 ZR-2 W/squeaking noise [crewchief1949] by andrew_869
Sep 07, 2005 (12:44 pm)

Replying to: crewchief1949 (Jun 29, 2004 4:39 am)

Did you figure out what was squeeking?
#1069 of 2018
Re: Poor mpg on 2000 Sonoma 2.2L [a2gw55] by chevy02
Sep 07, 2005 (12:52 pm)

Replying to: a2gw55 (Aug 16, 2005 8:01 pm)

We have a 2002 4.3L V6 ZR2 with 85000 miles. Typically we got 15.5-16.2 mpg on the truck, but lately it has been under 15. (Ouch!) This weekend we changed the fuel filter and got 16.8 on the next full tank! I'm not sure if this was all due to the filter change, maybe it was good gas or a big tailwind. We will see after I get a few more tanks down. But for the price and time it takes to change the filter, I think it's worth a shot. Not to mention the stuff coming out the old one was pretty nasty.
#1070 of 2018
Coolant problem by chevy02
Sep 07, 2005 (1:23 pm)
My radiator fluid has turned into sludge. I think it is because one weak day when the guys at Jiffy Lube said you are low and asked to top it off I said sure... I think that was a big mistake. Anyways, I think they added the regular blue coolant to my orange dexcool. And although the engine is working fine, underneath the radiator cap there lurks a bunch of lovely sludgy muddy looking stuff.
 
I originally was thinking of going to the dealer and having them flush and replace it. Although, I've been looking around on the internet and reading horror stories about Dexcool. Can you switch back to the classic blue green antifreeze after Dexcool if the system is flushed thoroughly? Or should I just stick with the dexcool?
#1071 of 2018
Re: 1999 S10 problems after some time of running ... [tjdude] by chevlvr
Sep 09, 2005 (1:25 pm)

Replying to: tjdude (Sep 05, 2005 3:34 pm)

Hi ,
        TPM could be TPS, which is throttle position sensor. I had mine replaced
 2 weeks ago because at a stop, when trying to throttle up, it would lurch and
studder like it was out of gas, when I shut down the motor and started it again,
it would run fine, I have seen alot of simular problems on the site, and this is a
common problem for the 2.2L. so try replacing the sensor, they run about $45
atleast, mine did. good luck, hopes this helps T
#1072 of 2018
(automatic) won't easily shift into second by dani_s10
Sep 09, 2005 (3:15 pm)
I have a 94 v6 122,000 miles automatic, the problem is the truck runs great except it can't seem to shift easily into second gear, the truck drags and there's a loud almost roaring sound as the truck fights against itself to gain speed, however, once the tac hits 3.5 then it quickly shifts into second. All other gears are operating fine. The oil change done just two weeks ago is now dirty, the new sparks are filthy. I just had the fuel injectors cleaned. My truck won't start unless my foot lightly touches the gas pedal...which I never had to do previously. The local technicians can't find the source of the problem.
#1073 of 2018
S-10 Alternator Replacement by ch1
Sep 09, 2005 (7:52 pm)
Any hints/tips on replacing the alternator on a 2001 S-10 2.2L 4cyl? It looks pretty hard to get access to - not on the top of the engine like most. Some parts will have to be removed to gain access, but I'm not sure which ones are best. Have replaced alternators before, but I'm pretty much of a mechanic wannabe...
#1074 of 2018
Re: S-10 Alternator Replacement [ch1] by joe3891
Sep 10, 2005 (9:05 am)

Replying to: ch1 (Sep 09, 2005 7:52 pm)

I would remove the passenger side wheel and splash shield, a little work but good access.
#1075 of 2018
Re: S10 misfire code p0302 [steve77581] by pugstersj
Sep 10, 2005 (9:23 am)

Replying to: steve77581 (Aug 22, 2005 4:58 pm)

steve.
i'm going to guess computer, because i'm having the exact same problem. i just put in a brand new complete crate motor from gm and still have the problem.#2 cylinder is fuel fouling. my new motor came with injectors, sensors, throttle body, coils, plugs, wires. only thing left is computer.
good luck.
maybe someone will post that help us both.
dave
#1076 of 2018
Re: 1999 S10 problems after some time of running ... [chevlvr] by tjdude
Sep 11, 2005 (10:38 am)

Replying to: chevlvr (Sep 09, 2005 1:25 pm)

My god! that's exactly how it happens, i think that will be!!!. I didn't think that was the problem because the mechanic said it wasn't but now that you describe the problem, i'm sure that you are right. Thanks

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