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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 31, 2004
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Open Help Requests for GM
Help Request Answers
1976 Cadillac Eldorado 8.2L master Cyl, Hydrauric Unit, Proportion Valve VIN: 6L67S6Q214
Happy, happy New Year, Dear, Awsome IATN members!! This is 4 wheel Disk Brake system. Customer brought it for Brake Light on(replaced M/C, Pro. Valve from other shop). While I am breeding the system, I noticed that secondary port of M/C, feeding rear brake, wa...
1996 Cadillac Fleetwood 5.7L abs.traction control VIN: 1G6DW52P4T
Hello friends and Happy New Year to all.We have a 96 fleetwood brougham,rwd cadillac that appears to be setting a code 27 left front speed sensor circuit malfunction.we performed all testing in alldata for the wheel speed sensor on the l side.According to alld...
1996 Chevrolet Blazer 4.3L Evaporator VIN: 1GNDT13W7T
Hello! We are having trouble removing the evaporator on this 96 Blazer. I got Alldata to Fax the shop manual procedure, but it doesn't refer to the Evap. case cover at all, or describe the procedure to remove the bolt behind the exhaust manifold on the firewal...
1998 Chevrolet Venture 3.4L Fuel Injection VIN: 1GNDU03E9W
After I installed the heads I started the van and checked for leaks ect. It ran fine for about 45 min. Then it sputtered and died. Got it towed to my shop and it started again, ran for about 5 min and died, no restart. I checked for codes and found a purge cur...
1999 Chevrolet Silverado 1500 5.3L Misfire
This truck has developed a steady misfire on #3 cylinder only when rpms climb over 3300 rpm. 1/2-full throttle accell, #3 steady misfire. Spark plugs were replaced, fule injectors removed & cleaned, and most recently #3 lifters & valve springs replaced. When... Trouble codes: P3000
2001 Chevrolet Impala LS 3.8L fans VIN: 2G1WH55K81
customer was on trip when he noticed temp guage was not working.stopped at gm dealer they replaced cooling temp sensor,customer thinks it was working afterwords,when he returned home he noticed fans were running in his garage after car was off.customer brought...
1995 Oldsmobile 88 Royale 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G3HN52KXS
Hello, This Olds has developed an intermittent hiccup at all speeds under all conditions. Some days it is very noticeable like this morning and other days the problem is not present. It feels more severe and less regular than a misfire. Scan info looks norma... Trouble codes: 342 (cam)

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet Top Kick 366CID exhaust leaks VIN: 1GDJ6H1P8P
I thought I closed this one... Sorry. I had the manifolds plained, did not use gaskets. Truck has been gone several weeks and everything seems to be ok. Almost all replies said to do this. Thanks for the help.
1995 Chevrolet G20 Chevy Van 5.7L No Start VIN: 1GCEG25K6S
What a nightmare. Every wiring diagram I got for this vehicle was wrong. The ECM1 fuse provides switched 12V power to the ECM, Injectors, and EVAP purge solenoid. It turns out that someone pinched the injector wiring between the air intake spacer and the throt...
1992 Oldsmobile 88 Royale 3.8L cooling fans VIN: 1G3HY5316N
Well it turns out the ECM failed again, Not sure why. But it was a Reman to begin with. Got another under warranty and all is well. I hope I don't see this car again for a very long time. Thanks again for all the help.
1999 Oldsmobile Bravada 4.3L Differential VIN: 1GHDT13W3X
I took most everyones advice and got the GM synthetic fluid. Flushed and did a change. So far so good. Thanks for all the info fellow techs. Isom [...]
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