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Prev Professional Automotive Repair Technical Discussions for February 21, 2009
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet V3500 Silverado 6.2L tps VIN: 1GCHV33N3M
Hey guys and girls.Well I spent the big bucks (153.00 + tax) for the new tps.Replaced it this morning and now the ecm has a current 22 and under data the throttle angle stays at 35 regardless on accelerater movement or adjustment.I have good reference at 5.03 ...
1997 Chevrolet C3500 Cheyenne 6.5L No Start VIN: 1GCHC39F9V
We do not have alot of diesel experience , so we need some help. This truck came in as a no start no crank but Cust said is hard to start & no start at times. Batteries were dead . We replaced one battery & charged the other. After battery replacement the tru... Trouble codes: P1217
2001 Chevrolet Impala 3.4L No Start VIN: 2G1WF55E71
This car came in with crank but no start. customer said it was acting up earlier in the day. Fuel pump runs and has fuel pressure. Can not connect my fuel pressure gauge because of the power steering hose is in the way. Have plenty of fuel when pushing schrade... Trouble codes: P1189
1995 Pontiac Bonneville SE 3.8L alternator VIN: 1G2HX52K6S
hello there my question is that at times i lose the batt+ signal on circuit 225 ( this is the batt + signal out of the pcm red connector to the L terminal at the regulator). should this be a constant 12v signal all the time with the key in on or run? could i h...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Corvette 5.7L key less entry VIN: 1G1YY32G0Y
I would like to thank everybody who took the time to help with this Corvette, seems to be that the key fobs lost their information. After replacement of the first key fob the problem went away, at that time the customer had me order another set. She called me ...
2000 Chevrolet Blazer LS 4.3L 1-2-3-4 shifts-lean o2 sensors VIN: 1GNDT13W7Y
after an injector flush with a snap on motor vac the lean o2 sensor were gone back to normal had code p1875 but my high rpms on the out put speed sensor 4700-6500 were there under transmission data on a snap on scanner if i went under transfer case data the ou...
2000 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCDL19WXY
Thanks to all for your quick responce and pointers. I ended up replacing the injector pack and doing a deep cleaning to the upper and lower intake along with the throttle body and the misfire went away, truck runs great and fuel trims are back to spec. Thanks ... Trouble codes: P0300 (Random/Multiple Cylinder Misfire Detected), P0303 (Cylinder 3 Misfire Detected), P0304 (Cylinder 4 Misfire Detected).
2000 Chevrolet C2500 5.7L Ignition VIN: 1GBGC24R1Y
Installed new ignition switch today, found that the 3 wire connector that plugs into key portion if not plugged in creates same symptom of crank, but no run when key released. Also found the key chime now works if driver door is open and engine is running. Plu...
2005 Chevrolet Express 1500 LS 4.3L No Start VIN: 1GCFG15X65
hi guys. well it turned out to be the ecm was bad. i dont no why?? i dont no why batt went dead ether?? the alt was charging fine, no shorts found that would drain the batt. i guess the batt shorted internally and took out the theft control in the ecm, no inj...
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