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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 24, 2005
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Open Help Requests for GM
Help Request Answers
1986 Buick Electra Limited 3.8L No Start VIN: 1G3TJ56BH9
First of all I apologize for the incorrect VIN but I couldn't seem to get it to post without one.Anyway I have this 1986 Buick Electra with a 3.8 liter engine , when it heats up to operating temp. it will shut off and lose spark and injector pulse.Let it cool ... Trouble codes: 42 (est ignition problem)
1988 Buick LeSabre Limited 3.8L MIL Lamp on, code 41 VIN: 1G4HR54C4J
has anybody had this happen? all wiring ohms 0 zero to grounds from computer to module and sensor, car starts and runs but lite immed comes back on, went thru all tests several times and replaced all parts in circuits? changed ecm,ingnition module, cam magnet ... Trouble codes: 41 (cam signal open/shorted)
1994 Chevrolet K1500 5.7L 4 lo switch VIN: 2GTEK19K1R
Truck came in with trans wiped out. Would barely pull. I overhauled with torque conv, full kit, and shift solenoids and epc. Truck will shift into 4th and l/u by 20mph. Watching scanner, mph shows 128mph by this time and it also shows 4lo switch on. At idle 4l...
1996 Chevrolet K3500 6.5L Starting VIN: 1GCHK39F3V
This truck first came to us to replace a battery cable and a battery. After these repairs the vehicle would crank and not start. I removed the fuel pump on the rail and installed a fuel pressure tester and the truck starts every time. I replaced the fuel pump ...
2001 Chevrolet Monte Carlo LS 3.4L all VIN: 2G1WW12EX1
see related repair history category
1995 GMC Jimmy SL 4.3L Vacuum Actuators VIN: 1GKDT13WXS
Original complaint from customer was no A/C out of vents & lack of cooling. In checking out complaint found there was vacuum at the control head but was leaking at mode switch. determined that control head was bad, it also had an oily substance at the vacuum c...
1997 GMC C2500 Sierra SL 5.7L speedometer VIN: IGTGC29R9V
Vehicle came in with CEL and ABS lites on and showing a PO500a code for VSS circuit. Since my shop PC that runs my Mitchell is down at the moment I took a stab and replaced the VSS sensor and still have the problem. Is the vcm part of the ECM?Tomorrow I'll be ...
2003 Hummer H2 6.0L compressor ? VIN: 5GRGN23U23
Good day to all, Customer concern was a lack of air conditioning cooling ability at idle. I connected gauges and at idle the low side pressure was aprox. 65-70 psi, high side was 350 plus. Upon inspection the condenser was found to be plugged with grass seeds...
1989 Oldsmobile Delta 88 Royale 3.8L Noise VIN: 1G3HN54C3K
Our customer brought this car in for noise in the engine.The noise sounds like you are shaking marbles in a can.This engine is the 3800"c".The noise is real loud in the bell housing area. With a stethoscope with the end off of it and listening while moving the...
1992 Oldsmobile 88 Royale 3.8L Excessive Emissions, Cuts out, Stall VIN: 1G3HN53L3N
This Olds is just a little troublesome for me. It keeps running rich and stalling its self after about 3-5 minutes from cold start. I checked fuel pressure, injector resistance, pulled the o2 sensor to open up the exaust. So far everything looks good. No codes...
1997 Pontiac Grand Am SE 2.4L engine VIN: 1G2NE52T9V
a friend at another shop has a quad 4 that's giving him fits. they had the head off for repair,it was milled & a valve job done.they found a tsb and replaced the oil pump.now when starting the engine it will run for about 5 seconds and die and will loose compr...
2001 Saturn L200 2.2L MIL Lamp on VIN: 1G8JU52FX1
After driving this car for a half-hour plus,the O2 sensor code returns. Trouble codes: P0137 (Bank 1 Sensor 2 Voltage low)

Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac DeVille 4.6L abs/traction lights VIN: 1G6KD54Y4W
well the car finally came back in a week later so what i did was make my own harness from the rr ws sensor to the contol module. So far it has been a week and no call back from the cust. thanks to all who responded
1985 Chevrolet Camaro Berlinetta 5.0L start and stall cold VIN: 1G1FP87F2F
After looking through an old manual I found the procedure for setting the minimum idle setting, i don't think this was done when the throttle body was replaced. It seems to start and stay runinng better than it has so the customer wan't to take it and try it. ...
1990 Chevrolet Lumina Euro 3.1L engine VIN: 2G1WN54T6L
I thank all who have replied, the customer decided to start looking for a new vehicle so i could not go any further with the diag., but looking back, injectors are one main componant that we did not look twards. thank you all very much!! JAY
1993 Chevrolet K1500 Cheyenne 5.7L Petal Feel VIN: 1GCEK14K8P
Most of you told me to suspect the dump valve for the abs. I thank you for all of your help with info on how to test this. The customer brought the truck back for me to take one last look at and I rechecked everything. I found nothing more than before, so inst...
1993 Chevrolet C3500 Cheyenne 6.5L Stall, Starts and dies VIN: 1GDKC34F3R
When I went back though the test the injector module was not sending a signal as to the statas of the injectors. It was recieving the command for the control but the PCM was not seeing it happen so would not start. After readind all the replies am replacing in...
1995 Chevrolet Lumina LS 3.4L compressor clutch VIN: 2G1WN52X7S
well this one is done it just happens that the fitting are hidden by the air cleaner & i was relieing on the scanner info. turns out the a/c pressure switch was giving me bogis info. saying that it had 163 lbs . decided to move air cleaner & check the charge w...
1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W2X
Greetings techs, the fix for this S-10 Blazer was the coil had failed,We replaced it with a new one. Another tech took the Dist out and figured it was the problem, when he tried to put the dist back in the engine he had his sister in-law bump the engine over w...
2003 Chevrolet Silverado 1500 5.3L radio VIN: 1GCEK19T53
Several replies were correct in the fact that from about 2001 on up the radios will need to be reprogrammed with a tech 2 if they get unhooked or replaced. The dealer programmed the radio but the amp would still not work--so end result was the amp was the main...
1996 GMC K2500 Sierra SL 5.7L No Start VIN: 1GTGK24ROT
thanks for the resposes , the customer has figuered out how to start truck so it has not been back , since it seems to happen most often when he uses his worn key , we will replace the ignition barrel next time the truck is in for service. the mitchell wiring ...
1996 Pontiac Grand Am SE 2.4L MIL Lamp on VIN: 1GNE52T4TC
sorry for the delay in updating you all. thanks a lot for everyone's advice. i pulled the hose off of the fuel pressure regulator. i could not see fuel in the hose but it definetly smelled like gas. i replaced the regulator and returned to customer. it has bee... Trouble codes: P0172 (fuel system too rich).
1997 Pontiac Grand Am SE 3.1L Surge, Poor Fuel Economy VIN: 1G2NE52MIV
To all that helped on this one I would like to thank you, and a special thanks to Robert [...].It was the knock sensor retarding the timing , to me it felt just like a fuel pump bad.It fooled me because I had a similar car with same symptons and it was the f...
1998 Pontiac Sunfire SE 2.2L Excessive Emissions, Cuts out, Poor Fuel Economy, MIL Lamp on VIN: 1G2JB124XW
thanks to every one for your respond, problem was the ecm. a reman. ecm took care of the problem. thanks again matt Trouble codes: P0117 (temp. show -40 f), P0108 (map high), P0404 (egr), P1133 (o2 sensr), P1404 (egr).
2002 Pontiac Grand Am SE 3.4L Misfire VIN: 1G2NF52EX2
This one is fixed. The most logical reply was the one to do a current ramp test etc. on the affected injector. I had already ran those tests when I submitted this request. I found a bulletin that says if you have tested the injectors, the harness etc. and all ... Trouble codes: P0203 (Injector control circuit cyl3).
1993 Saturn SL2 1.9L serpentine belt VIN: 1G8ZK557OP
Thank you to those who replied a new belt and tensioner was all this car needed to take care of the noise.
2002 Saturn L300 3.0L blows fuse VIN: 1G8JW54R52
as gregory from new jersey said, not supose to be a fuse in that one, and the long crank was the fuel pump wouldn't start pumping right away. thank you to those who replied, Ron
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