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Prev Professional Automotive Repair Technical Discussions for January 28, 2011
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1993 Cadillac DeVille 4.9L Poor Idle Quality, Stall VIN: 1G6CD53B7P
This car came to me from another shop, where they had tried 3 tp sensors. Customer complant: engine will not run at idle when cold. I checked an vaeified it will not run idle when cold and stalls at stop lights unless you keep it off idle. Afer engine warms ...
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1987 Chevrolet Camaro Z28 Iroc-Z 5.0L No Start, Poor Idle Quality, MIL Lamp on, Not idling down VIN: 1G1FP21FXH
Vehicle came in with no start condition. Replaced battery engine crank and no start. Fuel pump was checked along with relay. Fuel pump pressure 38 p s i. Bypassed fuel pump relay and engine would start. Installed a new fuel pump relay...and back to same result... Trouble codes: 33 (High mass air flow sensor), 36 (Mass air flow burn off)
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1995 Chevrolet G20 Chevy Van 5.7L Speed Buffer VIN: 1GBEG25K8S
95 miles ago the VSS and the VSS Signal Buffer Module were replaced to solve a No Speedometer / Trans stuck in limp-in gear / Computer trouble code 24 "No Vehicle Speed Signal Received" problem. The original testing showed power and ground to the module, and s...
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1999 Chevrolet C3500 6.5L Mechanical VIN: 1GBJC34F6X
Purchased the Transgo shift kit 4L80E-HD2-D. i am going to install this into a used trans i got to replace the trans in my personal truck. befor i install this kit thought i ask if there are any issues or something i should be aware of before i do this. i will...
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2003 Chevrolet Trailblazer EXT LT 4.2L Pulls Right At Times VIN: 1GNDT13S63
Truck came to us from another shop with complaint of pulls right at times. Upon grilling the customer, the at times condition after acceleration where the rear axles spins the tires and then locks the differential. When the differntial is locked it will turn t...
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2003 Chevrolet Impala LS 3.8L ignition VIN: 2G1WF55K93
OK guys, this is a head scratcher, hope someone has an idea where to go. 2003 Impala Police car, transmission shift solenoids bad. Put it in drive and it was in 3rd gear, wouldn't go into 1st. I replaced the solenoids. To do this you have to drop the entire en...
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2004 Chevrolet Trailblazer LS 4.2L all electrical consumers VIN: 1GNDT13S74
This post is actually an F.Y.I. FIX We encountered after replacing the alternator on this vehicle with a Factory Rebuilt (due to momentary discharging) that we were not getting the PWM voltage signal from the alternator to the PCM thus turning the BATT light o...
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2005 Chevrolet Cobalt 2.2L MIL Lamp on VIN: 1G1AK52F45
vehicle came for a no crank condition, no codes stored in all modules, diagnosed as a bad pcm due to no signal being sent to the crank relay, replaced and programmed pcm with a new unit from gm. vehicle would now start and shut off as i expected, tried do perf... Trouble codes: B3031
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2010 Chevrolet SILVERADO 5.3L Contorl Arm Bolts VIN: 3GGCRKE37A
Has anyone seen the eccentric bolt nuts back off on these vehicles? I have had a few that got loose after someone else aligned them. However, I aligned this one and a month later the rf rear bolt nut loosened and caused cam to slip. I have tightened these nuts...
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1998 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ52M4W
Customer replaced EGR before bringing vehicle to shop.With trouble code P0405 in memory. Was able to perform EGR testing thru scanner but no engine RPM change. Found the passage from EGR to the intake almost completly plugged off with carbon, cleaned it and re... Trouble codes: P0405 (EGR sensor cicuit low volage)
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2001 Pontiac Aztek 3.4L rear brakke VIN: 3G7DAEO301
Vehicle came in for Brake pulsation in rear, roadtest with e-brake applied,pin pointed rear. Rpalced rear drums no change, replaced rear bearing on rh side no change ,moved other bearing to lh side n change. I'm really scratching my head here...HELP this aint ...
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Fixes & Summaries for GM
Fix/Summary Answers
2004 Chevrolet Silverado 1500 LT 5.3L fuel fill
thanks to every body that replied ,,yes it was the evap vent ,,ordered the upgrade from chevy took gas like a thirsty chevy it is ,, funny part no codes or check engine light and passed emission test last week
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2002 Saturn Vue 2.2L Mechanical VIN: 5GZCZ23D22
WE FOUND AN ENGINE FROM A SATURN, HOWEVER A CHEV COBLAT WOULD HAVE WORKED AS WELL. THANK YOU FOR ALL YOUR REPLIES, WITH THE INFO YOU GENTS SUPPLIED IT MADE THE WHOLE PROCESS EASIER TO UNDERSTAND AND WORK THOUGH. THANKS AGAIN JOE
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