× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 8, 2005
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
1998 Buick Park Avenue 3.8L fuel guage VIN: 1G4CW52K3W
We replaced transmission, I don't believe that had anything to do with fuel gauge. Customer had same trouble before, unclear on exact repair performed, Customer states dealer removed instrument cluster and did "something". Fuel gauge indicator was pegged on wr...
1986 Chevrolet Celebrity 2.8L No Start VIN: 1G1AW19X9G
ok feedback carb guys this is a good one. this car was towed in a few days ago with a no start cond. found it to be flooded real bad, cleaned plugs and tried it again good spark but still flooding. I took off the carb opened it up and found accel pump broken, ...
1987 Chevrolet Astro 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1GCDM15Z2H
1994 Chevrolet G20 Sportvan 5.7L wipers VIN: 1GBEG25K8R
customer came in with complaint that wipers would not shut off or would start swiping on crank up and would not shut off until you cycled key again. we have replace the wiper pulse board and motor with a rebuilt unit that the customer had supplied. After insta...
1994 Chevrolet Camaro Z28 5.7L Starting VIN: 2G1FP22P1R
Thanks in advance for any help. This camaro has no power to the starter, it has the security light on. Last week we tested the ign switch, clutch switch, both are powering up. The theft deterant module was not allowing power through so we replaced the module ...
1996 Chevrolet K1500 6.5L Mechanical VIN: 2GCEK19S3T
hi guys got a goofy one here.this truck came in with left rear brake heating up.we did a full brake inspect on it.we replaced rear wheel cylinders on it neww shoes and rear drums.brake cables are not sticking. any ways the left rear still heats up periodicly n...
1997 Chevrolet C2500 Suburban 5.7L Cuts out VIN: 1GNNGC26RX
Hello Gents. This is a head scratcher which has come my way from another shop. They have limited test equip and experience and their problems become mine. Of course as most techs, we like a good challenge although sometimes we get more than we bargained for. W...
1997 Chevrolet Malibu 3.1L gauges/indicators VIN: 1G1ND52M1V
I've tried just about every test I can think of. Dash lights come on (background), but the check engine, oil, low fuel, etc. lights do not come on during start-up. There is no noise at all when turning the key to ACC (eg. fuel pump, no clicking for relays). Th...
1997 Chevrolet C3500 6.5L Cuts out, Stall VIN: 1GCGC33F2V
Problem is intermittent sometimes goes a long period of time without stalling (week to a month)
2002 Chevrolet Silverado 2500 HD 6.6L noise at steering colm VIN: 1GCHK23163
Customer complaint is a groan noise heard from Pass. compartment when turning steering wheel. This nosie is worse the longer you drive. It only happens when turning the steering whell(Vehicle does have Hydro-boost for the brakes) The noise does not happen all ...
2002 Chevrolet Tahoe LS 5.3L Misfire, MIL Lamp on VIN: 1GNEK13ZO2
Hi erveryone and thanks for the soon coming help. I just got put on this tahoe to try to repair a misfire problem on cyl #'s 4 and 5. #5 misfires increased quickly when first started even after previous mechanic installed new plugs and wires.#4 came up also bu... Trouble codes: P0171, P0174, P0300
1993 GMC K1500 Suburban SLE 5.7L Poor Idle Quality, Stall VIN: 1GKFK16K7P
3 ecms to find a good one, all kept current stall condition. I lose injection pulse and ignition briefly, the lower the idle the more dramatic the effect. High idle 850 plus the symptom is more of a bump of a misfire which the engine easily recovers. Lower idl...
1998 GMC Sonoma SLE 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GTCS194XW
Here's one that is making our lives interesting. The vehicle runs like the converter or exhaust is restricted or plugged. It will start and maintain a rough idle, engine vacuum at the intake manifold is 12 inches or less, when the throttle is opened the engine... Trouble codes: P0107 (map volts low), P0108 (map volts high), P0300 (mis fire)
1999 GMC Sierra 1500 SL 4.3L Hesitation, Surge VIN: 1GCEK19T1X
I need some guidence. Truck when on first start of morning and for about 15 miles will surge and hesitate, especially when you first step on it. "Seems to do it for about 10 to 15 seconds and then clears up. As it gets better it only does it as you step on it ...
1999 GMC Yukon Denali 5.7L gear selector in drive or 3 VIN: 1GKEK13R1X
When accelerating hard this vehicle seems to jump out of gear. The trans. "bangs" and the RPM's race. It then will not move unless manualy shifted into second or first geart then its ok, you can shift it back into drive and its fine until you try to accelerate...
2000 Oldsmobile Alero GX 2.4L engine VIN: 1G3NK52T1Y
Customer brought in a 2000 Olds Alero, 2.4 engine with an engine noise like a lite rod knock going in the rear of the engine at ilde. Noise changes off idle to a rubbing, scraping noise. Released torque convertor, noise is just a rubbing noise. Removed oil pan...
2000 Pontiac Montana 3.4L No Start VIN: 1GMDX03EXY
Hello Gentlemen! Thank you SO much in advance for your help! This is what I have: NO START, good spark, good fuel pressure, but injectors will not fire. Good power to injectors (see above), injector resistance seems reasonable (#1-11.7 ohms,#2-11.6, #3-11.6, #... Trouble codes: P0440, P0300, P1446, P????, B1009, B2734

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Camaro 3.4L lifters VIN: 2G1FP22S8R
Replaced all lifters. Engine oil was like tar. Changed oil.
1995 Chevrolet K1500 5.7L housing VIN: 2GBEK19KOS
Well, this truck is gone. Replaced trans with another unit, and so far, so good. We feel the owner probably damaged it through abuse, but we're unable to prove anything. The frt d'shaft is free, the tires are all correct, the brace is installed, etc. Don't kno...
1996 Chevrolet C1500 5.7L Poor Idle Quality, Misfire, MIL Lamp on
Thanks to all who responded. The culprit was indeed the intake gasket at the #2 port. But first, Michael said to check the EVAP solenoid & EGR for leaks before condeming the intake gaskets. Jon & Tim said to cap off PCV system & ck for vacuum at the dipstick t... Trouble codes: P0502 (Cyl 2 Missfire Detected).
1997 Chevrolet Cavalier 2.2L daytime and highbeam headlights
Thank everyone for all your help, I was able to fix this vehicle. The wires were broken at the splice were it goes from one wire, to the two wires to each of the headlights, like many of you said. I knew I had a problem with the 1200 circuit, but wasen't sure ...
1998 Chevrolet K1500 Cheyenne 5.0L power steering VIN: 2GCEK19M3W
i replaced the electric flow control valve on the back of the pump. no more noise. no more free wheeling feeling.i did not let vehicle leave until i was completly satisfied that i had the fix. thanks to all the help.
2000 Chevrolet Silverado 2500 6.0L Electronic VIN: 1GCGK29U2Y
All 12 replies said to replace switch in dash. That is what I did and the owner has not returned,so I am pretty sure that fixed it. You would think I would have seen more of these,as many Chevy's as there are in my area. Oh well,first time for everything. Than...
2000 Chevrolet S10 2.2L Cuts out VIN: 1GCCS1445Y
i will close this as an intermittent no fix,truck has bucked once at cruise uphill,scan data looks normal and no further codes,other than the fuel gauge one(hasn't worked for awhile-needs a sender unit)i tried a few of the suggestions you guys said to check to...
2002 Chevrolet Suburban 1500 LT 5.3L fog lamps VIN: 1GNFK16Z42
thanks too all who responded, vehicle will not be back untill next maintanence inspection, once it comes back we will look at items suggested and we will post results, thanks again laurie [...]
1994 GMC K1500 Sierra SL 5.7L heater / defroster VIN: 1GTEK14K2R
the majority of the replies covered the basics.. inlet vs. outlet temps.. clogging due to rust,intake manifold sealant.etc. the actual problem was a poor heat transfer from the core to the heater box. we thouroughly checked the blend door motor and the selecto...
1999 GMC Yukon Denali 5.7L transfer case fuse VIN: 1GKEK13R3X
Customer has not returned with vehicle. For the time being, will assume that problems has not reoccurred. Thanks for your help.
1999 Oldsmobile Silhouette Premiere 3.4L Excessive Emissions, Hesitation, Cuts out, Stall, LACK OF POWER VIN: 1GHDX03E2X
Thank you to all who responded. We cut the cat apart and found the catalyst melted and laying in the bottom. We also found that the wire between the crank sensor and the module had been melted on an exhaust manifold and was loosing signal at times. We suspect ...
2000 Oldsmobile Intrigue GLS 3.5L No Start VIN: 1G3WX52HXY
sorry about the delay I wanted to see if the car would come back before I post a fix. thank you all for your help, in the end it was the ingnition switch. I was having a hard time starting the car the day after the fix post was made. I would turn the key the m... Trouble codes: B1422 (u1016- loss of pcm power), U1016 (loss of pcm power).
2001 Oldsmobile Aurora 3.5L MIL Lamp on VIN: 1G3GR64H81
The customer has not brought the car back in, so I do not know if it is fixed or not. I will post on what I found out. This car has an electric air pump that is under the drivers headlight. The relay for this pump is on the pass. side front strut, very close t... Trouble codes: P0410.
1996 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W8T
Two years ago I put a injection cluster in this vehicle, and when I took it out and hooked it up only two injectors were barely leaking gas. The system was clogged. So I find in cal. there is a recall and a new system to install. So I am. Thanks for all the in...
1995 Pontiac Grand Prix SE 3.1L Cable/Shifter VIN: 1G2WJ12N2S
As I suspected, this was an uncommon problem. The suggestions were possible bent shaft, rusted shaft, trans run dry causing binding valve, column problem (although this is a floor shift). Unfortunately the customer would not spend any more money researching th...
1996 Pontiac Grand Prix SE 3.1L No Start VIN: 1G2WJ12M3T
Well a lesson was learned on this one. When I repaired the damaged harness I did NOT pay attention to the polarity. I remember thinking that the sensor is an AC generator. Well I had a 50-50 chance and got it wrong! Mike [...] was the first reply (and within an...
2000 Saturn LS2 3.0L Engine VIN: 1G8JW52ROY
After reading the tech mail on this problem we've decided not to proceed with this job as we're not tooled for it at this time. Thanks to Jim [...]'s response help confirmed what we suspected. 'Hi Tim. It does sound like you have the front cams out of time...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next