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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 25, 2004
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1996 Cadillac DeVille 4.6L extended crank VIN: 1G6KD52Y1T
this car came in with a hard start after hot soak 1 hour. we checked fuel pressure, pressure droped to zero in 10 seconds. replaced fuel pump assembly. pressure now holds to spec. checked fuel pressure regulator for leaks and found none. replaced both crank se...
1986 Chevrolet S10 Blazer 2.8L Hesitation, Sometimes backfires VIN: 1C8CS18R8C
Morning folks, another beautiful day in the neighborhood. Got a strange one it seems. This blazer came in running bad cold, hesitation. Checked codes (see list below) and found a bad pigtail on the coolant temp sensor (read -41). Replaced pigtail and read fine... Trouble codes: 44 (Lean Exhaust), 24 (No VSS Received), 15 (Coolant Temp Sensor High or Open), 33 (Map Sensor or Circuit Open or High), 32 (EGR System Problem)
1987 Chevrolet R10 Custom Deluxe 5.0L Stall VIN: 1GCER14H9H
Truck has a dual tank setup. We can get it to start by holding the tank switching switch in either position. This rocker switch is designed so you must push all the way in either direction. It is spring loaded on both directions. Truck will start and run while...
1989 Chevrolet Corvette 5.7L Poor Idle Quality, Surge
Hi fellow tech's I have still got a problem with this Corvette where the engine starts to hunt and surge at idle when hot.I have removed injectors and had them tested and no fault could be found with them.The engine control unit we have determined is faulty du...
1996 Chevrolet C1500 Suburban LS 5.7L MIL Lamp on VIN: 1GNEC16R9T
I'm the third one to get involved in this vehicle. Code PO441 sets at random. It may take a week in between settings, its a 2 trip code. Another tech installed a purge solenoid and a purge canister on the truck. According to Alldata, pin 15 at the grey connect... Trouble codes: P0441
1999 Chevrolet Silverado 1500 5.3L Misfire VIN: 1GCEK19T4X
Hello techs. This truck came to me this afternoon and i had a little time to mess with it. Complaint was that mil is on and runs very rough. Sure enough as soon as it started it was missing very badly. Also had multiple cylinder missfire code. So i looked at t...
1999 Chevrolet C1500 LS 5.7L abs VIN: 2GTEC19T6X
Hello everyone, I got this truck that has co265 ABS code, the scanner doesnt exsplain the code. The code can be cleared but comes wright back, Ive ordered a abs manual but wont get it untill next week, I would like to know what this code means and how to diagn...
2001 Chevrolet Silverado 3500 6.6L No Start, Hesitation VIN: 1GCJK33131
Fellow Techs, This truck came in on the hook, a no-start after a six hour cold soak. For some previous history, approximately 5000 miles ago it was towed in, a no-start immediately following a hot shut down. Customer complained of extended cranking time along ... Trouble codes: P0088 (Fuel Rail Pressure Control Problem), P0089 (Fuel Rail Pressure Not at Desired PSI)
1998 Pontiac Grand Prix GT 3.8L rear main VIN: 1G2WP12K5W
3800 has oil leak in oil pan / tranny area.Front mount had oil laying in the saddle so I did a pan gasket.I think I have a rear main or something on the back of the block leaking. Dye wasn't conclusive.Is there anything on the back of the motor other than the ...

Fixes & Summaries for GM
Fix/Summary Answers
1987 Cadillac Cimarron 2.8L Misfire VIN: 1G6JG51W2H
Sorry I took so long to thank every one who offered advice on this'CADDY'.I have not fixed it yet because my neighbors son say's the price of the part is too high!he say's he can get it cheaper. My price for the part-$40.00. I should remember that NO GOOD DEED...
1998 Cadillac Eldorado ETC 4.6L etc VIN: 1G6ET129XW
Thanks for all the help.the fix was soldering new termanals in all the inputs at the ebtcm.thankyou stephen [...] for the info.
1988 Chevrolet S10 Blazer Sport 4.3L Poor Fuel Economy, MIL Lamp on VIN: 1GNCT18Z6J
Thanks to all the replies Scott,Richard,Mike,Eric,Gene,Walter,Jerry,Mark,Rodger and Angelo. The customer has never been seen since so I assume what we did is a fix. We lowered fuel pressure until fuel trims were within an acceptable range. Thanks again for the... Trouble codes: 44 (lean exhaust).
2000 Chevrolet Malibu 3.1L Elec. cooling fans VIN: 1G1ND52J8Y
Out of the 6 replies I recieved the 1st. day 5 said let temp come to 235 in shop and fans will come on. That turned out to be true, however I have contected Mitchel on demand and told them to put that info out. Acording to mitchel the fans will run at 223 and ...
2000 GMC Yukon XL 1500 SLE 5.3L Cylinder head VIN: 3GKFK16T4Y
Thanks to all that replied to share their experience. The customer, however, did not return. The job sounds pretty straight forward and looking forward to tackling this job sometime soon! It's nice to get real world experience and information before taking on ...
1998 Oldsmobile Silhouette GL 3.4L Hesitation, Surge, Misfire VIN: 1GHDX03EIW
we road tested it with the gynese on it and commanded the lock up torque converetr on and the problem went away so we installed a used transmission
2001 Pontiac Grand Prix GT 3.8L Wheel Speed Sensor VIN: 1G2WP12K51
Thanks for all the help. Test drove with the scanner on it and the left front wheel speed sensor goes nuts at times. Customer declined to repair. Take care and God bless
1997 Saturn SL1 1.9L low brake pedal VIN: 1G8ZG5288V
Saturn is fixed! Thanks to Larry, and Bill from Ar., it turned out to be the upper sliders on the calipers almost fully seized up. Sometimes when we techs get focused on a problem, it is hard to think outside the box! So thanks to IATN for saving a Saturn (fro...
2000 Saturn LS1 2.2L Misfire, MIL Lamp on VIN: 1G8JU52F2Y
IATN WORLD ROCKS) We have tracked it down to a misfire. I called the dealer, there is an open recall on ign module and reprogamming is part of the recall along with new plugs. The customer will be booking an apointment with them. thanks so much for the help. ... Trouble codes: P0300, P0420, P1599.
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