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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 16, 2004
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet Beretta GT 3.1L Poor Fuel Economy VIN: 1G1LW13T8M
Hi, I need some help with this vehicle: After a recent engine swap, the fuel mileage on this Beretta has dropped significantly. The fuel mileage has dropped to 14.6 mpg. The engine was taken from a '92 Cavalier which was getting excellent fuel mileage. I have ...
1997 Chevrolet Express 1500 5.7L Hesitation, Surge, Cuts out, Speedometer VIN: 1GBFG15R4V
Vehicle was towed in. Driver is not very car-savey, so discription of symptoms was hard to come by. Driver says vehicle wanted to accelerate all by itself - brakes worked poorly, - says she had to "run"2 stop lights because she couldn't get it stopped- says sp...
1992 GMC C1500 Sierra SLE 4.3L Poor Fuel Economy VIN: 1GTDC14Z7N
this one has me stumped. the truck starts up and idles great, good performance and power, it averages 18 mpg in city however the mileage drops to 13 to 15 mpg on steady highway driving. average 75 mph. the check engine light comes on after aprox. 30 min of fla... Trouble codes: 44 (lean exhaust)
2003 GMC Sierra 1500 HD SLE 6.0L Ride Quality VIN: 1GTGK13U43
Hello All, This truck was offered at a really low cost to my customer when it was new, and I think it was due to the fact nobody wanted it.. Customer drove and told dealership that the ride was too harsh to see what they could do about it.. Well they put Mich...
1991 Pontiac Sunbird LE 3.1L Poor Idle Quality, Hesitation, Surge, Stall VIN: 1G2JB11T8M
car seems to surge and sometimes stall when braking on decel after it is hot.Place car in netural and the surging goes away.RPM gauge goes down to 650 then up 800 only when I have the signals on. The car has a small rough idle when in park but its worse when t...
2002 Pontiac Grand Am GT 3.4L door locks VIN: 1G2NW52E32
This car belongs to my daughter in another city. She bought the car from Enterprise and since the electric door locks worked with the door buttons but not with the key fob. A trip to the dealer and they tried to program a transmitter and couldn't get any to wo...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Buick Reatta 3.8L door ajar indicator VIN: 1G4EC33C2L
Hello gents: We were finally able to narrow down the fault on this Buick Reatta. The BCM was at fault on this one. I tested all powers an grounds as suggested at ECM, Instument cluster and BCM. Even though BCM had all OK, it had a few gobblings lurking inside ...
1994 Chevrolet K3500 7.4L Cuts out, Misfire VIN: 1GCHK33NSA
i removed the cam to find that the lobes were worn.sorry it has taken so long to respond.my computer has been down.i replaced the cam and lifters and the vehicle runs great.thanks for all of the replies.
1996 Chevrolet C1500 Cheyenne 5.7L No Start, Stall VIN: 2GCEC19RXT
Well, it was more than one thing. The alternator decided it wanted to start introducing A/C voltage into the system, causing all kinds of weird problems. Seems like the truck had been losing power for a while, but no mention of it until after alternator diagno...
1999 GMC Sierra 1500 SL 5.3L 4 wd won't disegage VIN: 1G7EK19T1X
customer took vehicle and has not returned we tried some of the suggestions but couldn't fix problem.
1997 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G3HN52K5V
thanks for all the help guys it was the pcv valve the o rings were messed up when put in new manifold put in a new one road tested and problem was gone. thanks for all the responses Trouble codes: P0401.
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