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Prev Professional Automotive Repair Technical Discussions for July 31, 2004
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Open Help Requests for GM
Help Request Answers
1987 Cadillac Fleetwood 4.1L Alternator VIN: 1G6BC5181H
Hi Guys, I am not a Cadillac tech but have 2 of them in my stalls eating my lunch. This one will not charge. The battery wire(the big one to the alt) is battery voltage (12V) and with the key on it has voltage to the red and the brown wires at the plug in conn...
1995 Cadillac DeVille 4.9L Turnsignals VIN: 1G6KD52B6S
Hey Guys, I have this 2nd Cadillac eating my lunch. I am a little lost. It has working brake and emergency lights but no turnsignals. I tested the switch with jumperwires and the switch is good.The fuses are all good and the bulbs and the turnsignal relay are ...
1984 Chevrolet Camaro Berlinetta 5.0L Poor Idle Quality, Hesitation, Surge, Stall VIN: 1G1AP87611
Ok, We just put a new rebuilt 5.0 HO in this camaro. The main problem is low vacume. Only 8 in at idle 700 rpm, and 14 at 2500 rpm. This creates a stall at idle, hesitation, lower than normal power, light surge at cruise. Test data-- Idles smooth-- no miss, n...
1998 Chevrolet Corvette 5.7L tire pressure VIN: 1G1YY22GYW
customer chnged to 02 style wheels with pressure sensors. Is there a way to learn the new sensors to the vehicle without the special tool. And if there is not where can I purchase this tool. we are starting to see alot of this in my tire shop. I tryed using a ...
1996 GMC C1500 Sierra SL 5.0L MIL Lamp on, Harsh trans engage VIN: 2GTEC19M1T
Original diagnosis for MIL on and harsh trans engage and shift included resistance test of TCC solenoid performed at disconnected 20 pin connector of trans, reading was in spec. Nearly identical readings obtained when tested at PCM connector and trans fuse. Wi... Trouble codes: P0325 (Knock sensor circuit), P1864 (TCC circuit)
1990 Oldsmobile Cutlass Calais 2.5L water pump VIN: 1G3NL14U4L
im having a problem with removivg the water pump on this vehicle. i have followed the normal procedure with the removal by removing the front motor mount bolts and removing the driver side bolts which connects the motor to the sub frame. however when i tried t...
1992 Oldsmobile Toronado 3.8L air bags VIN: 1G3EZ13L3N
Hello Techs; Thanks in advance! Here is my problem. The information I have says that the code R052 is that the air bag has deployed 4 times, Which is the most that the DERM can store. The informatio also says the deployments are stored on the EPROM in the DERM...
2001 Oldsmobile Intrigue GL 3.5L MIL Lamp on VIN: 1G3WH52HO1
Customer came in with MIL on. Code PO410 Sec air was stored. I was able to get the air pump to run while in the shop. It pumps plenty of air and there are no kinks or restrictions in the lines. Checked vac operated valve with scanner attached and O2 goes lean ... Trouble codes: P0410
1998 Pontiac Grand Am SE 2.4L Excessive Emissions, Surge, Poor Fuel Economy, MIL Lamp on, STFT &LTFT CRAWL UP VIN: 1G2NE52T8W
College girls car, came in with mil codes are above. Can't figure out what is skewing the load calc. as it is 22% at idle baro seems right for sea level (HOU TX) Map seems to be working. Remember this is speed density-no maf.Maf on scanner is 5 gm/sec.both o2s... Trouble codes: P0171, P1171 (sys lean on accel)

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac DeVille 4.5L MIL Lamp on VIN: 1G6CD5337L
After reading the replies to my help repuest, I contacted the customer to have him bring the car back. He was supposed to bring it in, but never showed up. I'm guessing the owner of the car already got another used air pump control valve & replaced it himself.... Trouble codes: E49 (air management system problem).
1996 Cadillac Seville SLS 4.6L Stall, MIL Lamp on VIN: 1G6KS52Y2T
I'd like to thank everyone who replied. First thing I did was replace both crank sensors with dealer parts but did not help. One of the other suggestions I had was that the spark plug wires may some kind of interferance. Although I did not beleive this would f... Trouble codes: P1599.
1978 Chevrolet Corvette 5.7L relays VIN: 1Z8789S443
Hi Everyone, Well thanks to Dsolo, Jerry [...]. As most of these guys knew It was the antitheft relay but after much consideration the Cust decided that his money would be better spent on the many...
1990 Chevrolet Lumina 3.1L Poor Idle Quality, Hesitation, Stall, Will not idle VIN: 2G1WL54T7L
Hi guy! I am sorry to inform all of you that unfortunatly the customer had to have the car back. His second vehicle is now in the shop for an engine that threw a rod. Since this car did run, it was his transportation to and from work untill we finished the e...
1995 Geo Metro 1.0L oil consumption VIN: 2C1MR2262S
The little oil gusseler is fixed!! Several members obviously have had this problem before - the NAPA gasket doesn't have as big of drain back holes as the factory gasket and so after driving at 75-80 [...] per hour, the oil accumulates in the valve cover/cam a...
1992 Pontiac Trans Sport 3.8L No Start VIN: 1GMDUO6L4N
Thanks for all the help, cust decided to scrap van. Replies were for cam sensor,cam magnet, wiring at cranksensor, harness problems. I pulled the harness out for the cam/crank sensor and although the harness looked rough(cover off ,wires oil coated) all wires ... Trouble codes: 42 (est problem).
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