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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 7, 2006
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Open Help Requests for GM
Help Request Answers
1986 Buick Regal 3.8L performance
have engine out of car for minor rebuild, spun two rods, customer would like to do some performance upgrades. I searched the net and found tons of places that sell different parts. I would like to know if any member knows of site of knows personally that can g...
1998 Chevrolet K2500 Cheyenne 5.7L Excessive Emissions, Misfire, Poor Fuel Economy VIN: 1GCGK24R2W
Hi Guys! Got one that I've read about but thought I would check here to get any different ideas. This truck has strong gas vapors from the tail pipe almost like raw gas steam, that burned your eyes. Scanner showed #7 cylinder missing bad while the others onl...
1999 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Low on Power VIN: 1GCEK14W3X
Hello. this 4.3 runs like timing is late big time, dist. is not adjustable, has index tab, verify dist. rotor pointing at cy. one with piston on tdc, cam reading on tech 2 shows -13 degrees at 2000 rpm, baro, coolant, map, knock readings all ok on tech 2 scan ...
2004 GMC Savana Camper Special G3500 6.0L No Start VIN: U641135031
Hello everyone this van was towed to the shop next to use for no start. will start with ether pretty sure security proble van was stolen another shop installed ignition lock cylinder. my questions are how did they get it started when it was stolen? is there a ... Trouble codes: P1631
2001 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW12E91
car towed in no start. have good fuel pressure, have spark and we have rpm signal with scanner. injectors not accessable so used a stethascope to listen for clicking. had none so in stalled a cam sensor and still no start but now do have injector clicking. HEL...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet Express 1500 5.7L Misfire VIN: 1GBFG15R7V
Hi to all and thanks for the overwhelming support. The solution to the problem was replacing the bank 1 number 1 O2 sensor. I had a lot of time during a week off to read all of the responses and think about the problem. When I first drove the van after my time...
1997 Chevrolet Cavalier 2.2L hydraulic system VIN: 1G1JC5249V
Didn't get much response on this one, but we ended up replacing everything: again. Master, hose, and slave. Seems to be holding now. Never could find where the fluid was leaking, just mysteriously disappeared.
2001 Chevrolet S10 4.3L Cluster, Radio VIN: 1GCCT19W61
All of you that reinforced the ground issue, Thank you. You kept me on the right track. With the help of a friend (iatn member also) we found a ground wire severed. This ground was common to the BCM, cluster, and the relay center under the dash. I replaced the...
2002 Chevrolet Silverado 1500 HD LS 6.0L brake pedal VIN: IGCGK13V92
Thank you for all the replies. The fix turned out to be getting new software for the scan tool to automatically bleed the ABS. We were able to bet the pedal travel close to the spec of 3.6 inches travel with 100 pounds of force. Hydroboost accummulator bled do...
1991 GMC syclone 4.3L ignition VIN: 1GDCT14Z7M
we are going to order the oem intake gasket set we have found that felpro offers a gasket that seals the ports however as of this moment this truck will sit til funds and time are at hand thank you for all who responded
2001 Oldsmobile Aurora 4.0L slight knocking VIN: 1G3GS64C01
thanks for opinion from six members. the knocking noise that was intermittent: we performed the upper engine decarbon procedure according to bullitin, we used the gm top engine cleaner #1050002. it did not seam to help. I also called JASPER for an opinion. t...
1992 Pontiac Firebird 3.1L No Start, Flooding VIN: 1G2FS23T0N
Hi guys! Sorry its taken so long to get back to ya. Finally convinced the customer to get a computer from the dealer. I got the approval this past Tuesday and the car is gone. I don't understand why sometimes only a factory ECM will work and an aftermarket...
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