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Prev Professional Automotive Repair Technical Discussions for December 12, 2004
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Open Help Requests for GM
Help Request Answers
1989 Buick Skylark Custom 2.5L No Start VIN: 1G4NC54UHK
hi, i have this buick died on highway. i have no injector pulse, tried different computer, same problem. tried to ohm injector, is 1.3 ohms but shop keys does not give spec that i can find, so i dont knoe if that is good or bad.
1978 Chevrolet Malibu 5.7L crankcase pressure
We have a perpetual oil leak. We fix one and the customer comes back a week later with another one. It started with oil coming out of the dipstick tube. We added a vent to the valve cover in addition to the PCV on the other one and took care of it. We have sin...
1998 Chevrolet Tahoe 5.7L transfer case VIN: R5WJ313684
customer orginal complaint was it was getting hard to get out of 4wd. checked out truck and found service 4wd light on. well my mac mentor wont scan the trnfer case codes unsure why. so test drove and found 4wd hi light would come on but front diff wasn't engu...
1992 Oldsmobile 88 Royale 3.8L no spark VIN: 1G3HY5316N
Fellow Techs, This vehicle came in on the hook with crank/no start condition. Customer stated service engine soon light was flashing and engine was running poorly for several days, then it would not start at all. I jumped pins A&B on data link connector. The ...
2000 Oldsmobile Bravada 4.3L 4x4 VIN: 1GHDT13W4Y
Group- Customer came in complaining of binding on tight turns. I drove the vehicle around our yard, and it seems as though it's in 4x4. Brought it in the shop, and up on the lift it went. Sure enough it was in 4x4. No lights on dash indicating problems. Got th...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Buick Roadmaster 5.7L timing chain/damper area VIN: 1G4BR873PW
Thanks to everybody who replied. The majority felt that the problem was related to the timing chain, damper, or camshaft/crankshaft end play. Some suggested a bad distributor bearing or the water pump. Water pump seems unlikely since the noise is worse with th...
1995 Chevrolet Caprice Classic 5.7L inop temp gauge VIN: 1G1BL52P3S
Thanks everyone for the input. I'm going to send out the cluster. I will post my results. More than a few have seen gauge/cluster issues. The sender I installed is correct. (I posted the sender as 'sensor') Also of discussion, the 160 'stat was questioned. Thi...
1999 Chevrolet K1500 Suburban 5.7L Outside Ambient Temp Reading VIN: 1GNFK16R9X
Thanks for all your replies, they're greatly appreciated. The summary of replies goes like this. 8 talked about some type of open connection, which could be anywhere from the mirror to the sensor and 2 of those said the connector right at the mirror. 1 sent an...
2001 GMC Savana 2500 5.7L daytime running lights VIN: 1GTFG25M51
The fix for this vehicle was a shorted red wire with a yellow trace comming of the number 15 fuse. I shorted about six inches below the fuse panel between the panel & support. It only shorted when the headlights were on for some reason. I burnt out a new dayti...
1995 Oldsmobile Aurora 4.0L Oil Pressure VIN: 1G3GR62CXS
After not sleeping much due to thinking of this 'beast', I went in early and smoke tested the oil pump. By applying smoke to the output, it was coming out the input side- which I did not think it would since there was still oil in the pump and the gear was not...
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