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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 17, 2009
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2003 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DAO3E13
I have an 03 rendevous that sets a po453 fuel tank pressure sensor ckt. high, several months ago when this all started we found the 453 code and a bad connector(heavy green corrosion) in the underbody harness connector where it attaches to the underbody floor ... Trouble codes: P0453
1982 Chevrolet Impala 4.4L no power in drive VIN: 2G1AL69J6C
can runs and starts fine. place in drive and no power. power brake and it acts like the ehaust is plugged. brake pedal hard replaced brake booster and now have good vac. but still no power. place hand over carb runs great has power. sprayed engine down for vac...
1994 Chevrolet Corsica 3.1L abs system VIN: 1G1LD55MXR
A customer brought his car in last week with a sinking brake pedal. The problem did not happen here but the customer wanted a new brake master cylinder. 3 days after leaving the shop the customer said driving in stop and go traffic the brake pedal came up and ...
1998 Chevrolet Astro LS 4.3L Poor Idle Quality, Hesitation, Misfire VIN: 1GBDM19W1V
cylinders 1 and 2 are misfiring. plugs are clean. wires intact. pulled plenum and the left bank is slightly washed looking but the right hand bank is highly carboned. more misfires on cyl 2 than cyl 1. did pressure drop test and all injectors dropped about the... Trouble codes: P0300
1999 Chevrolet Tahoe 5.7L Suspension VIN: 1GNEK13R4X
we recently replaced pitman arm and idler arm complete assembly,brakes and set toe. the customer returned and said they felt the vehicle was going to roll over. we then swaped tires, reset ride height, adjusted caster and camber, all to no avail. the vehicle s...
2001 Chevrolet Silverado 1500 4.8L Poor Idle Quality, hard start VIN: 2GCEC19V91
customer complaint is hard start but will start if thottle is held open. the idle is low ( about 400 ) i have replaced the fuel filter whitch was plugged up. have checked the iac and it seams to be working. checked the fuel pressure regulater and it is not lea...
2001 Chevrolet Prizm 1.8L compressor VIN: 1Y1SK52851
I am in dire need of help! I have not one but two of these prizms an 01 and 02. They are both going through compressors in a matter of days or weeks. One has had two compressors, the other three. I actually replaced everything except the hose asm and metal lin...
2002 Chevrolet S10 4.3L gas tank VIN: IGCDT13W52
the gas tank has a hole in it, need some ideas as to where we can locate a gas tank.
2005 Chevrolet Equinox LT 3.4L rke VIN: 2CNDL13F95
For gm guys! I want to know if I can program a new key fob on this 2005 equinox with out a scan tool.We have a modis and snap on doesn't support reprogram RKE transmitter.If anyone can help THANK YOU
2006 Chevrolet Silverado 1500 LT 5.3L engine VIN: 2GCEK19B26
Hello Iatn Techs here is my Problem. Vechicle came to the dealership with the Engine knocking in the upper end. Lifter area. No lower end noise noticed. No Oil Pressure reading on dash. Checked oil pressure with gauge. Gauge also reads 0. Pulled Oil Pan checke...
1991 Geo Tracker 1.6L Excessive Emissions VIN: 2CNBJ18U8M
vehicle is running very rich,black exhaust smoke.o2 sensor always on rich side .960 volts even by creating manifold vacuum leak.i heared they have ecm problem but not sure if related to emmission problem.
1997 GMC Yukon SL 5.7L Misfire, MIL Lamp on VIN: 1GKEK13RXV
Hi all, Beautiful day in California. Have read most of archives on this vehicle. When driving on flat or foot hills, would not think of this truck having a problem. But when you start up a steeper pull the misfire becomes very obvious. Truck had new fuel pump,... Trouble codes: P0300 (Random misfire)
2000 GMC C-Series Topkick C6H042 7.4L Poor Idle Quality, Surge, vibration VIN: 1GDE6H1B5Y
engine vibrates at all rpm's , i have checked the following , fuel preasure ( good 48 psi running ) e-85 contamination ( pass 10% ) compression ( 150 - 170 psi ) spark ( all coils fire ) plugs ( no cracks , proper gap , none fouled) checked all fuses . i am ou...
2001 Pontiac Grand Am GT 3.4L Cruise Control VIN: 1G2NW12E91
Hello All, Have a car driving us nuts. Car came in with no cruise control light, tested the system and found a faulty switch in the steering wheel, replaced switch. Road test and now the light in the dash comes on. Press set botton and nothing happens. Tested...
2002 Pontiac Bonneville SLE 3.8L Stall VIN: 1G2HY54K22
HELP,CAR HAS THIS LONG CRANK NO INJECTOR PULSE ANYWHERE FROM 3 TO 5 SECONDS THEN ENGINE WILL RUN. TPS STAYS AT .29 volts. has battery voltage at injector at all times . it has cam sensor cranking from ignition mod to pcm as well as 3X and 18X . used lab scope ...
2006 Pontiac G6 2.4L MIL Lamp on VIN: 1G2ZF55B26
Hello IATN members i have a 2006 Pontiac g6 with the check engine light is on , and low power due to computer being in limp mode or reduced engine power mode, caused by intake camshaft position codes, i have removed the rocker cover and the timing chain cover ... Trouble codes: P0010 (intake camshaft position actuator solenoid control circuit), P0011 (intake camshaft position system system performance)
2000 Saturn LS1 2.2L suspension strut mount VIN: 1G8JU52F8Y
Hello to all. Thoughts needed here on this one folks. The car came in with a left front strut mount bad. We replaced both front struts and mounts (Napa parts)at 144,800 miles. Seems Napa now uses Moog suspension parts as well. All was well for about a week and...
2006 Saturn Ion Red Line 2.0L Mechanical VIN: 1G8AY11T86
Hi guys we have a unussual problem here ,,customer came with a clutch problem replaced clutch .pressure plate,slave cylinder machined flywheel got everything back everything back together and the slave started to leak ,,pulled the tranny back out got a differe...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet Blazer 4.3L Misfire VIN: 1GNDT13W3V
thanks to all that e-mailed me.i feel like a fool by overlooking the basics.the left bank o2 sensor was bad leaning out the cylinders.replaced sensors,miss gone.but it didn't sit any o2 codes.looked at data,there it was.couldn't see problem for looking at it.t... Trouble codes: P0300.
2003 Chevrolet Silverado 2500 HD 6.6L Speedometer VIN: 1GCHK23173
A GM flow chart states that using a signal generator, we should be able to get the speedometer to function if indeed the cluster assembly is functional. For lack of a signal generator, we took the signal to the tachometer, and hooked it up to the speedometer....
2003 Chevrolet Suburban 1500 LS 5.3L airbag VIN: 1GNFK16ZX3
2004 Chevrolet Cavalier 2.2L No Start, Cuts out, Stall VIN: 1G1JC52F54
Well another one down the road. I got a lot of good replies to my request. Most indicated a faulty fuel pump. I talked to my client and we desided to put in a new fuel pump. Just as I was bring in the vehicle the condition happened. I found 7.2 volts at the fu... Trouble codes: P0455 (EVAP system problem).
2005 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 1GNFK16Z45
First I would like to thank everyone for their replies. Thanks! The problem was that the purge solenoid was out of position. Instead of being in an upright 12 O'clock orientation, it was cocked to about 11 O'clock. This allowed a vac. leak, but allowed the eva... Trouble codes: 171 (Bank 1 Lean), 174 (Bank 2 Lean).
2007 Chevrolet Cobalt LS 2.2L vavletrain VIN: 1G1AL55F86
Ok. Thanks again for all your help. i wanted to make sure this one stayed gone since it was such a fun project! I pulled the head back off and forced pressrized solvent through the passages from the oil filter to the susspected restricted port. First i used ...
1995 GMC Jimmy 4.3L high idle VIN: IGKDTI3WSK
Hi thanks all. there was a wire rubbed through and shorting causing the iac pintle to move out further then requested causing PCM to lose track of iacs zero position.
2003 GMC Yukon SLE 4.8L fuel & charging guages VIN: 1GKEC13V63
Hello all, thank you to all 14 techs who replied my post. Most of you is leaning towards the replacement of the instrument cluster which is not under warranty from the dealer. The customer declines for repair at this time. He said that he'll be back later for ...
2001 Saturn L300 3.0L code VIN: 1G8JW52R71
Once again my IATN brothers have come thru for me! MAF was correct # & not reman. It was however completely contaminated with oil & debris. Cleaned it & no code was reset. Engine is burning oil & blowing it back to air box. Customer declined any other repairs ...
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